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class="mw-indicator"><div class="mw-parser-output"><a href="/wiki/Wikipedia:Featured_lists" title="This is a featured list. Click here for more information."><img alt="This is a featured list. Click here for more information." src="//upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/20px-Cscr-featured.svg.png" decoding="async" width="20" height="19" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/30px-Cscr-featured.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e7/Cscr-featured.svg/40px-Cscr-featured.svg.png 2x" data-file-width="466" data-file-height="443" /></a></div></div> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle">(Redirected from <a href="/w/index.php?title=Birdgloss&redirect=no" class="mw-redirect" title="Birdgloss">Birdgloss</a>)</div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Birdmorphology.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Birdmorphology.svg/290px-Birdmorphology.svg.png" decoding="async" width="290" height="208" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Birdmorphology.svg/435px-Birdmorphology.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Birdmorphology.svg/580px-Birdmorphology.svg.png 2x" data-file-width="600" data-file-height="430" /></a><figcaption>External anatomy (<a href="#topography">topography</a>) of a typical bird: 1 <a href="#beak">beak</a>, 2 <a href="#head">head</a>, 3 <a href="#iris">iris</a>, 4 <a href="#pupil">pupil</a>, 5 <a href="#mantle">mantle</a>, 6 <a href="#lesser_coverts">lesser coverts</a>, 7 <a href="#scapulars">scapulars</a>, 8 <a href="#coverts">coverts</a>, 9 <a href="#tertials">tertials</a>, 10 <a href="#rump">rump</a>, 11 <a href="#primaries">primaries</a>, 12 <a href="#vent">vent</a>, 13 <a href="#thigh">thigh</a>, 14 <a href="#tibio-tarsal_articulation">tibio-tarsal articulation</a>, 15 <a href="#tarsus">tarsus</a>, 16 <a href="#feet">feet</a>, 17 <a href="#tibia">tibia</a>, 18 <a href="#belly">belly</a>, 19 <a href="#flanks">flanks</a>, 20 <a href="#breast">breast</a>, 21 <a href="#throat">throat</a>, 22 <a href="#chin">chin</a>, 23 <a href="#eyestripe">eyestripe</a></figcaption></figure> The following is a glossary of common English language terms used in the description of <a href="/wiki/Bird" title="Bird">birds</a>—warm-blooded vertebrates of the <a href="/wiki/Class_(biology)" title="Class (biology)">class</a> Aves and the <a href="/wiki/Origin_of_birds" title="Origin of birds">only living dinosaurs</a>.<a href="#cite_note-1">[1]</a> Birds, who have <a href="#feathers">feathers</a> and the ability to <a href="#flight">fly</a> (except for the approximately 60 extant species of <a href="/wiki/Flightless_birds" class="mw-redirect" title="Flightless birds">flightless birds</a>), are toothless, have <a href="#beak">beaked</a> <a href="#mandible">jaws</a>, <a href="/wiki/Oviparity" title="Oviparity">lay</a> <a href="/wiki/Eggshell" title="Eggshell">hard-shelled</a> eggs, and have a high <a href="/wiki/Metabolic" class="mw-redirect" title="Metabolic">metabolic</a> rate, a four-chambered <a href="/wiki/Heart" title="Heart">heart</a>, and a strong yet lightweight <a href="/wiki/Bird_skeleton" class="mw-redirect" title="Bird skeleton">skeleton</a>. Among other details such as size, proportions and shape, terms defining bird features developed and are used to describe features unique to the class—especially evolutionary adaptations that developed to aid <a href="/wiki/Bird_flight" title="Bird flight">flight</a>. There are, for example, numerous terms describing the complex structural makeup of feathers (e.g., <a href="#barbules">barbules</a>, <a href="#rachides">rachides</a> and <a href="#vanes">vanes</a>); types of feathers (e.g., <a href="#filoplume">filoplume</a>, <a href="#pennaceous">pennaceous</a> and <a href="#plumulaceous">plumulaceous</a> feathers); and their growth and loss (e.g., <a href="#colour_morph">colour morph</a>, <a href="#nuptial_plumage">nuptial plumage</a> and <a href="#pterylosis">pterylosis</a>). There are thousands of terms that are unique to the study of birds. This glossary makes no attempt to cover them all, concentrating on terms that might be found across descriptions of multiple bird species by bird enthusiasts and <a href="/wiki/Ornithology" title="Ornithology">ornithologists</a>. Though words that are not unique to birds are also covered, such as "<a href="#back">back</a>" or "<a href="#belly">belly</a>," they are defined in relation to other unique features of external <a href="/wiki/Bird_anatomy" title="Bird anatomy">bird anatomy</a>, sometimes called "<a href="#topography">topography</a>." As a rule, this glossary does not contain individual entries on any of the approximately 11,000 recognized living individual bird species of the world.<a href="#cite_note-2">[2]</a><a href="#cite_note-Newton2003-3">[3]</a><a href="#cite_note-5">[a]</a> <style data-mw-deduplicate="TemplateStyles:r1119456059">.mw-parser-output .tocnumber{display:none}.mw-parser-output #toc ul,.mw-parser-output .toc ul{line-height:1.5em;list-style:none;margin:.3em 0 0;padding:0}.mw-parser-output .hlist #toc ul ul,.mw-parser-output .hlist .toc ul ul{margin:0}</style><style data-mw-deduplicate="TemplateStyles:r1097603156">.mw-parser-output .horizontal-toc-align-right{float:right}.mw-parser-output .horizontal-toc-align-left{float:left}.mw-parser-output .horizontal-toc-align-center{clear:none}.mw-parser-output .horizontal-toc-align-center .toc{margin-left:auto;margin-right:auto}.mw-parser-output .horizontal-toc-clear-right{clear:right}.mw-parser-output .horizontal-toc-clear-left{clear:left}.mw-parser-output .horizontal-toc-clear-both{clear:both}.mw-parser-output .horizontal-toc-clear-none{clear:none}</style><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><div class="hlist horizontal-toc"><meta property="mw:PageProp/toc" /></div> <div class="mw-heading mw-heading2"><h2 id="A">A</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=1" title="Edit section: A">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1228772891">.mw-parser-output .glossary dt{margin-top:0.4em}.mw-parser-output .glossary dt+dt{margin-top:-0.2em}.mw-parser-output .glossary .templatequote{margin-top:0;margin-bottom:-0.5em}</style> <dl class="glossary"> <dt id="addled_eggs"><dfn>addled eggs </dfn></dt> <dd>Also, wind eggs; hypanema.<a href="#cite_note-6">[5]</a> Eggs that are not viable and will not hatch.<a href="#cite_note-Weaver12-7">[6]</a> See related: <a href="#overbrooding">overbrooding</a>.</dd> <dt id="afterfeather"><dfn>afterfeather </dfn></dt> <dd>Any structure projecting from the shaft of the <a href="#feather">feather</a> at the rim of the <a href="#superior_umbilicus">superior umbilicus</a> (at the base of the <a href="#vanes">vanes</a>), but typically a small area of downy <a href="#barbs">barbs</a> growing in rows or as tufts.<a href="#cite_note-9">[b]</a> Entirely absent in some birds—notably from many members of the <a href="/wiki/Columbidae" title="Columbidae">Columbidae</a> family (pigeons and doves)—afterfeathers can significantly increase the insulative attributes of a bird's <a href="#plumage">plumage</a>.<a href="#cite_note-Pettingill32-10">[8]</a></dd> <dt id="allopreening"><dfn>allopreening </dfn></dt> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Preening#Allopreening" title="Preening">Preening § Allopreening</a></div> <dd>A form of <a href="/wiki/Social_grooming" title="Social grooming">social grooming</a> among birds, in which one bird <a href="#preen">preens</a> another or a pair does so mutually. At times it may be used to redirect or sublimate aggression, such as one bird assuming a solicitation posture to indicate its non-aggression and invite allopreening by the aggressive individual.<a href="#cite_note-MANDAL2012-11">[9]</a></dd> <dt id="alternate_plumage"><dfn>alternate plumage </dfn></dt> <dd>Also, nuptial plumage; breeding plumage. The plumage of birds during the courtship or breeding season. It results from a <a href="#prealternate_moult">prealternate moult</a> that many birds undergo just prior to the season. The alternate plumage is commonly brighter than the <a href="#basic_plumage">basic plumage</a>, for the purposes of sexual display, but may also be <a href="#cryptic">cryptic</a>, to hide incubating birds that might be vulnerable on the nest.<a href="#cite_note-Humphrey–Parks-12">[10]</a></dd> <dt id="altricial"><dfn>altricial </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Altricial" class="mw-redirect" title="Altricial">Altricial</a></div> <dd>Also defined: semi-altricial; altricial-precocial spectrum. Young that, at hatching, have their eyes closed; are naked or only sparsely covered in <a href="#down_feathers">down feathers</a> (<a href="#psilopaedic">psilopaedic</a>); are not fully able to regulate their body temperature (<a href="/wiki/Ectotherm" title="Ectotherm">ectothermic</a>);<a href="#cite_note-SummersCrespi2013-13">[11]</a> and are unable to walk or leave the nest for an extended period of time to join their parents in <a href="#foraging">foraging</a> activities (<a href="#nidicolous">nidicolous</a>), whom they rely on for food.<a href="#cite_note-Howell2014-14">[12]</a> The contrasting state is <a href="#precocial">precocial</a> young, which are born more or less with their eyes open, covered in down, <a href="/wiki/Homeothermic" class="mw-redirect" title="Homeothermic">homeothermic</a>, able to leave the nest and ambulate and to participate in foraging.<a href="#cite_note-SummersCrespi2013-13">[11]</a><a href="#cite_note-Johnston2013-15">[13]</a> The young of many bird species do not precisely fit into either the precocial or altricial category, having some aspects of each and thus fall somewhere on an altricial-precocial spectrum.<a href="#cite_note-Urfi2011-16">[14]</a> A defined intermediate state is termed semi-altricial, typified by young that, though born covered in down (<a href="#ptilopaedic">ptilopaedic</a>), are unable to leave the nest or walk and are reliant on their parents for food.<a href="#cite_note-Scott2008-17">[15]</a><a href="#cite_note-Pettingill371-18">[16]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Alula.png" class="mw-file-description"><img alt="Drawing of the various parts of a bird's wing" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Alula.png/220px-Alula.png" decoding="async" width="220" height="88" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Alula.png/330px-Alula.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/da/Alula.png/440px-Alula.png 2x" data-file-width="3221" data-file-height="1295" /></a><figcaption>Location of the <a href="#alula">alula</a> on a bird's wing</figcaption></figure> <dt id="alula"><dfn>alula </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Alula" title="Alula">Alula</a></div> <dd>Also, bastard wing; alular digit; alular quills.<a href="#cite_note-Pettingill16-21-19">[17]</a> A small, freely-moving projection on the <a href="/wiki/Anterior" class="mw-redirect" title="Anterior">anterior</a> edge of the wing of modern <a href="/wiki/Bird" title="Bird">birds</a> (and a few <a href="/wiki/Non-avian_dinosaur" class="mw-redirect" title="Non-avian dinosaur">non-avian dinosaurs</a>)—a bird's "thumb"—the word is Latin and means 'winglet'; it is the <a href="/wiki/Diminutive" title="Diminutive">diminutive</a> of ala, meaning 'wing'. Alula typically bear three to five small <a href="#flight_feathers">flight feathers</a>, with the exact number depending on the species. The bastard wing normally lies flush against the anterior edge of the wing proper, but can be raised to function in similar manner to the <a href="/wiki/Leading_edge_slats" class="mw-redirect" title="Leading edge slats">slats</a> of airplane wings that aid in <a href="/wiki/Lift_(force)" title="Lift (force)">lift</a> by allowing a higher than normal <a href="/wiki/Angle_of_attack" title="Angle of attack">angle of attack</a>. By manipulating the alula structure to create a gap between it and the rest of the wing, a bird can avoid <a href="/wiki/Stall_(flight)" class="mw-redirect" title="Stall (flight)">stalling</a> when flying at low speeds or when landing. Feathers on the alular digit are not generally considered to be <a href="#flight_feathers">flight feathers</a> in the strict sense; though they are asymmetrical, they lack the length and stiffness of most true flight feathers. Nevertheless, alula feathers are a distinct aid to slow flight.<a href="#cite_note-Campbell656-20">[18]</a></dd> <dt id="anisodactylous"><dfn>anisodactylous</dfn></dt> <dd>Descriptive of tetradactyl (four-toed) birds in which the architecture of the foot consists of three toes projecting forward and one toe projecting backward (the <a href="#hallux">hallux</a>), such as in most <a href="#passerine">passerine</a> species.<a href="#cite_note-Pettingill187-21">[19]</a><a href="#cite_note-Gill59–61-22">[20]</a></dd> <dt id="anting"><dfn>anting </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Anting_(bird_activity)" class="mw-redirect" title="Anting (bird activity)">Anting (bird activity)</a></div> <dd>Also defined: passive anting. A <a href="/wiki/Self-anointing_in_animals" title="Self-anointing in animals">self-anointing</a> behaviour during which birds rub insects, usually <a href="/wiki/Ant" title="Ant">ants</a> and sometimes <a href="/wiki/Millipede" title="Millipede">millipedes</a>, on their <a href="#feathers">feathers</a> and skin. Anting birds may pick up the insects in their <a href="#bill">bill</a> and rub them on their bodies, or may simply lie in an area with a high density of the insects and perform <a href="/wiki/Dust_bathing" title="Dust bathing">dust bathing</a>-like movements. Insects used for anting secrete chemical liquids such as <a href="/wiki/Formic_acid" title="Formic acid">formic acid</a>, which can act as <a href="/wiki/Insecticide" title="Insecticide">insecticides</a>, <a href="/wiki/Miticide" class="mw-redirect" title="Miticide">miticides</a>, <a href="/wiki/Fungicide" title="Fungicide">fungicides</a> and <a href="/wiki/Bactericide" title="Bactericide">bactericides</a>. The practice may also act to supplement a bird's own <a href="/wiki/Uropygial_gland" title="Uropygial gland">preen oil</a>. A third purpose may be to render the insects more palatable, by causing removal of distasteful compounds. More than 200 species of bird are known to ant.<a href="#cite_note-Osborn-23">[21]</a> "Passive anting" refers to when birds simply position themselves so as to allow insects to crawl through their plumage.<a href="#cite_note-Weaver12-7">[6]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Gull_of_Gibraltar_(8483055557).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/33/Gull_of_Gibraltar_%288483055557%29.jpg/250px-Gull_of_Gibraltar_%288483055557%29.jpg" decoding="async" width="250" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/33/Gull_of_Gibraltar_%288483055557%29.jpg/375px-Gull_of_Gibraltar_%288483055557%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/33/Gull_of_Gibraltar_%288483055557%29.jpg/500px-Gull_of_Gibraltar_%288483055557%29.jpg 2x" data-file-width="2962" data-file-height="1975" /></a><figcaption>A <a href="/wiki/Yellow-legged_gull" title="Yellow-legged gull">yellow-legged gull</a> (Larus michahellis) in flight. <a href="#apical_spots">Apical spots</a> tinge the row of feathers on the trailing edges of its wings.</figcaption></figure> <dt id="apical_spot"><dfn>apical spot </dfn></dt> <dd>A visible spot near the outer tip of a feather.<a href="#cite_note-AlderferDunn2007-24">[22]</a></dd> <dt id="apterylae"><dfn>apterylae </dfn></dt> <dd>Singular: apteryla. Also, apteria. Regions of a bird's skin, between the <a href="#pterylae">pterylae</a> (feather tracts), which are free of <a href="#contour_feathers">contour feathers</a>; <a href="#filoplumes">filoplumes</a> and <a href="#down">down</a> may grow in these areas.<a href="#cite_note-Proctor98-25">[23]</a><a href="#cite_note-UlmerHaupt1962-26">[24]</a> See related: <a href="#pterylosis">pterylosis</a>.</dd> <dt id="aviculture"><dfn>aviculture</dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Aviculture" title="Aviculture">Aviculture</a></div> <dd>The captive breeding and keeping of birds.<a href="#cite_note-Weaver12-7">[6]</a></dd> <dt id="axilla"><dfn>axilla </dfn></dt> <dd>Also, axillar region; "underarm"; "armpit". The "armpit" of a bird, often hosting <a href="#covert_feathers">covert feathers</a> called <a href="#axillaries">axillaries</a>.<a href="#cite_note-27">[25]</a></dd> <dt id="axillaries"><dfn>axillaries </dfn></dt> <dd>Also, axillary feathers; lower humeral coverts; hypopteron. <a href="#covert_feathers">Covert feathers</a> found in the <a href="#axillar_region">axillar region</a> or "armpit" of a bird, which are typically long, stiff and white in colour.<a href="#cite_note-Campbell60-28">[26]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="B">B</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=2" title="Edit section: B">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Feather_zipping_microstructure.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Feather_zipping_microstructure.svg/220px-Feather_zipping_microstructure.svg.png" decoding="async" width="220" height="156" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Feather_zipping_microstructure.svg/330px-Feather_zipping_microstructure.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6b/Feather_zipping_microstructure.svg/440px-Feather_zipping_microstructure.svg.png 2x" data-file-width="1052" data-file-height="744" /></a><figcaption>Explanatory diagram showing the interlocking of the <a href="#barbs">barbs</a> of <a href="#feathers">feathers</a></figcaption></figure> <dt id="back"><dfn>back </dfn></dt> <dd>The exterior region of a bird's upper parts between the <a href="#mantle">mantle</a> and the <a href="#rump">rump</a>.<a href="#cite_note-Vinicombe15-29">[27]</a></dd> <dt id="barb"><dfn>barb </dfn></dt> <dd>Also defined: ramus (plural: rami). The individual structures growing out of the <a href="#shaft">shaft</a> that collectively make up the <a href="#vanes">vanes</a> of the feathers, more or less interconnected by the <a href="#hooklets">hooklets</a> of the <a href="#barbules">barbules</a>, extending from each side of the distal part of the feather's shaft known as the <a href="#rachis">rachis</a>. The central axis of a barb is known as the ramus.<a href="#cite_note-Pettingill32-10">[8]</a></dd> <dt id="barbules"><dfn>barbules </dfn></dt> <dd>Also, radius / radii; tertiary fibres.<a href="#cite_note-Chandler252-30">[28]</a> Also defined: proximal barbules; distal barbules; barbicels; hooklets (hamuli); pennulum; teeth. Just as <a href="#barbs">barbs</a> branch off on parallel sides of the <a href="#rachis">rachis</a>, the barbs in turn have a set of structures called barbules, branching from each side of the <a href="#ramus">ramus</a>. The base cells of the barbule form a plate from which a thinner stalk projects called the pennulum. At one more level of branching, the pennulum hosts small outgrowths from it called barbicels—which when found on <a href="#pennaceous_feathers">pennaceous feathers</a>, vary in structure depending on which side of a barb's ramus they project from. Proximal barbules (on the proximal side of the ramus) have ventral projections near the base called teeth, while growing from the pennulum are cilia—simple pointed structures. At the base of the proximal barbule, the "dorsal edge is recurved into a <a href="#flange">flange</a>".<a href="#cite_note-Pettingill32-33-31">[29]</a> The distal barbules (on the distal side of the ramus) have a thicker base with more elaborate teeth, and a longer pennulum with hooklets (also called hamuli<a href="#cite_note-Allen1951-32">[30]</a>) at the end, as well as cilia in greater number than on proximal barbules. The hooklets overlap one to four rows of proximal barbules on the next higher barb, locking into their flanges, thereby giving the <a href="#vane">vane</a> structure, strength, flexibility and stability.<a href="#cite_note-Pettingill32-33-31">[29]</a> See also: <a href="#friction_barbules">friction barbules</a>.</dd> <dt id="basic_plumage"><dfn>basic plumage </dfn></dt> <dd>Also, winter plumage; non-breeding plumage. Also defined: supplementary plumage. The plumage of birds during the non-breeding season. It results from the <a href="#prebasic_moult">prebasic moult</a> that many birds undergo just after the season, and sometimes (rarely) even a second non-breeding season moult (resulting in what's termed "supplementary plumage") prior to the next breeding season.<a href="#cite_note-34">[c]</a> The basic plumage is commonly duller than the <a href="#alternate_plumage">alternate or nuptial plumage</a>.<a href="#cite_note-Humphrey–Parks-12">[10]</a><a href="#cite_note-Pettingill189-192-33">[31]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:BirdBeaksA.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/BirdBeaksA.svg/220px-BirdBeaksA.svg.png" decoding="async" width="220" height="662" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/BirdBeaksA.svg/330px-BirdBeaksA.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b4/BirdBeaksA.svg/440px-BirdBeaksA.svg.png 2x" data-file-width="465" data-file-height="1400" /></a><figcaption>Comparison of bird <a href="#bills">bills</a>, displaying different shapes adapted to different feeding methods (not to scale)</figcaption></figure> <dt id="beak"><dfn>beak </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak" title="Beak">Beak</a></div> <dd>Also, bill or rostrum. An external anatomical structure of a bird's head, roughly corresponding with the "nose" of a mammal, that is used for eating, <a href="/wiki/Personal_grooming#In_animals" title="Personal grooming">grooming</a>, manipulating objects, killing prey, fighting, probing for food, <a href="/wiki/Courtship_display" title="Courtship display">courtship</a> and feeding young. Although beaks vary significantly in size and shape from species to species, their underlying structures follow a similar pattern. All beaks are composed of two jaws, generally known as the <a href="#upper_mandible">upper mandible</a> (or maxilla) and <a href="#lower_mandible">lower mandible</a> (or mandible),<a href="#cite_note-Coues-35">[32]</a> covered with a thin, horny sheath of <a href="/wiki/Keratin" title="Keratin">keratin</a> called the <a href="#rhamphotheca">rhamphotheca</a>,<a href="#cite_note-Proctor66-36">[33]</a><a href="#cite_note-Gill148-37">[34]</a> which can be subdivided into the <a href="#rhinotheca">rhinotheca</a> of the upper mandible and the <a href="#gnathotheca">gnathotheca</a> of the lower mandible.<a href="#cite_note-Campbell47-38">[35]</a> The <a href="#tomia">tomia</a> (singular: tomium) are the cutting edges of the two mandibles.<a href="#cite_note-Campbell598-39">[36]</a> Most species of birds have external <a href="#nares">nares</a> (nostrils) located somewhere on their beak—two holes—circular, oval or slit-like in shape—which lead to the <a href="/wiki/Nasal_cavities" class="mw-redirect" title="Nasal cavities">nasal cavities</a> within the bird's skull, and thus to the rest of the <a href="/wiki/Bird_anatomy#Respiratory_system" title="Bird anatomy">respiratory system</a>.<a href="#cite_note-Campbell375-40">[37]</a> Although the word beak was, in the past, generally restricted to describing the sharpened bills of <a href="/wiki/Birds_of_prey" class="mw-redirect" title="Birds of prey">birds of prey</a>,<a href="#cite_note-Partington-41">[38]</a> in modern <a href="/wiki/Ornithology" title="Ornithology">ornithology</a>, the terms beak and bill are generally used synonymously.<a href="#cite_note-Proctor66-36">[33]</a></dd> <dt id="beak_colour"><dfn>beak colour </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Color" title="Beak">Beak § Color</a></div> <dd>The colour of a bird's beak results from concentrations of <a href="/wiki/Pigment" title="Pigment">pigments</a>—primarily <a href="/wiki/Melanin" title="Melanin">melanins</a> and <a href="/wiki/Carotenoids" class="mw-redirect" title="Carotenoids">carotenoids</a>—in the epidermal layers, including the <a href="#rhamphotheca">rhamphotheca</a>.<a href="#cite_note-42">[39]</a> In general, beak colour depends on a combination of the bird's <a href="/wiki/Hormone" title="Hormone">hormonal state</a> and <a href="/wiki/Diet_(nutrition)" title="Diet (nutrition)">diet</a>. Colours are typically brightest as the breeding season approaches and palest after breeding.<a href="#cite_note-Howell23-43">[40]</a></dd> <dt id="beak_trimming"><dfn>beak trimming </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Debeaking" class="mw-redirect" title="Debeaking">Debeaking</a></div> <dd>Also, debeaking and coping. The partial removal of the <a href="#beak">beak</a> of <a href="/wiki/Poultry" title="Poultry">poultry</a>, especially <a href="/wiki/Chicken" title="Chicken">layer hens</a> and <a href="/wiki/Domesticated_turkey" class="mw-redirect" title="Domesticated turkey">turkeys</a>, although it may also be performed on <a href="/wiki/Quail" title="Quail">quail</a> and <a href="/wiki/Ducks" class="mw-redirect" title="Ducks">ducks</a>. Because the beak is a sensitive organ with many sensory receptors, beak trimming or debeaking is "acutely painful"<a href="#cite_note-Grandin-44">[41]</a> to the birds it is performed on. It is nonetheless routinely done to intensively farmed bird species, because it helps reduce the damage the flocks inflict on themselves due to a number of <a href="/wiki/Stress_(biology)" title="Stress (biology)">stress</a>-induced behaviours, including <a href="/wiki/Cannibalism_(zoology)" class="mw-redirect" title="Cannibalism (zoology)">cannibalism</a>, <a href="#vent_pecking">vent pecking</a> and <a href="#feather_pecking">feather pecking</a>. A cauterizing blade or infrared beam is used to cut off about half of the upper beak and about a third of the lower beak. Pain and sensitivity can persist for weeks or months after the procedure, and <a href="/wiki/Neuromas" class="mw-redirect" title="Neuromas">neuromas</a> can form along the cut edges. Food intake typically decreases for some period after the beak is trimmed. However, studies show that trimmed poultry's <a href="/wiki/Adrenal_gland" title="Adrenal gland">adrenal glands</a> weigh less, and their plasma <a href="/wiki/Corticosterone" title="Corticosterone">corticosterone</a> levels are lower than those found in untrimmed poultry, indicating that they are less stressed overall.<a href="#cite_note-Grandin-44">[41]</a> A less radical, separate practice, usually performed by an <a href="/wiki/Avian_veterinarian" title="Avian veterinarian">avian veterinarian</a> or an experienced birdkeeper, involves clipping, filing or sanding the beaks of captive birds for health purposes—in order to correct or temporarily alleviate overgrowths or deformities and better allow the bird to go about its normal feeding and preening activities.<a href="#cite_note-fostersmith-45">[42]</a> "Coping" is the name for this practice amongst <a href="/wiki/Bird_of_prey" title="Bird of prey">raptor</a> keepers.<a href="#cite_note-ash-46">[43]</a></dd> <dt id="belly"><dfn>belly </dfn></dt> <dd>Also, abdomen. The <a href="#topography">topographical</a> region of a bird's <a href="#underparts">underparts</a> between the posterior end of the breast and the <a href="#vent">vent</a>.<a href="#cite_note-47">[44]</a></dd> <dt id="billing"><dfn>billing </dfn></dt> <dd>Also, nebbing (chiefly UK). Describes the tendency of mated pairs of many bird species to touch or clasp each other's <a href="#bills">bills</a>.<a href="#cite_note-48">[45]</a> This behaviour appears to strengthen <a href="/wiki/Pair_bond" title="Pair bond">pair bonding</a>.<a href="#cite_note-Terres232-49">[46]</a> The amount of contact involved varies among species. Some gently touch only a part of their partner's beak while others clash their beaks vigorously together.<a href="#cite_note-50">[47]</a></dd> <dt id="bill_tip_organ"><dfn>bill tip organ </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Bill_tip_organ" title="Beak">Beak § Bill tip organ</a></div> <dd>A region found near the tip of the <a href="#bill">bill</a> in several types of birds that forage particularly by probing. The region has a high density of nerve endings known as the <a href="#corpuscles_of_herbst">corpuscles of Herbst</a>. These consist of pits in the bill's surface lined with cells that sense pressure changes. The assumption is that these cells allow a bird to perform "remote touch", meaning that it can detect the movement of animals by pressure variations in water, without directly touching the prey. Bird species known to have bill-tip organs include <a href="/wiki/Ibis" title="Ibis">ibises</a>, shorebirds of the family <a href="/wiki/Scolopacidae" class="mw-redirect" title="Scolopacidae">Scolopacidae</a> and <a href="/wiki/Kiwi_(bird)" title="Kiwi (bird)">kiwis</a>.<a href="#cite_note-Cunningham&Alley-51">[48]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Pitta_guajana-20030531.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/Pitta_guajana-20030531.jpg/180px-Pitta_guajana-20030531.jpg" decoding="async" width="180" height="255" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/Pitta_guajana-20030531.jpg/270px-Pitta_guajana-20030531.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/11/Pitta_guajana-20030531.jpg/360px-Pitta_guajana-20030531.jpg 2x" data-file-width="513" data-file-height="726" /></a><figcaption>A female <a href="/wiki/Javan_banded_pitta" title="Javan banded pitta">Javan banded pitta</a> (Hydrornis guajanus), with a numbered ring <a href="#banding">banding</a> its left leg</figcaption></figure> <dt id="bird_ringing"><dfn>bird ringing </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Bird_ringing" title="Bird ringing">Bird ringing</a></div> <dd>Also, bird banding. The attachment of small, individually numbered metal or plastic tags to the legs or wings of wild birds to enable individual identification. The practice helps in keeping track of bird movement and life history. Upon capture for ringing, it is common to take measurements and examine the conditions of feather <a href="#moult">moult</a>, amount of subcutaneous fat, age indications and sex. The subsequent recapture or recovery of banded birds can provide information on migration, longevity, mortality, population, territoriality, feeding behaviour and other aspects that are studied by ornithologists. Bird ringing is the term used in the UK and in some other parts of Europe, while the term bird banding is more often used in the U.S. and Australia.<a href="#cite_note-BusseMeissner2015-52">[49]</a></dd> <dt id="bird_strike"><dfn>bird strike </dfn></dt> <dd>The impact of a bird or birds with an airplane in flight.<a href="#cite_note-Weaver23-53">[50]</a></dd> <dt id="body_down"><dfn>body down </dfn></dt> <dd>The layer of small, fluffy <a href="#down">down</a> feathers that lie underneath the outer <a href="#contour_feathers">contour feathers</a> on a bird's body.<a href="#cite_note-Sibley17-54">[51]</a> Compare: <a href="#natal_down">natal down</a> and <a href="#powder_down">powder down</a>.</dd> <dt id="breast"><dfn>breast </dfn></dt> <dd>The <a href="#topography">topographical</a> region of a bird's external anatomy between the <a href="#throat">throat</a> and the <a href="#belly">belly</a>.<a href="#cite_note-Weaver24-55">[52]</a></dd> <dt id="breeding_plumage"><dfn>breeding plumage</dfn></dt> <dd>See <a href="#alternate_plumage">alternate plumage</a>.</dd> <dt id="brood"><dfn>brood </dfn></dt> <dd>The collective term for the offspring of birds, or the act of <a href="#egg_incubation">brooding</a> the eggs.<a href="#cite_note-56">[53]</a></dd> <dt id="brooding"><dfn>brooding</dfn></dt> <dd>See <a href="#egg_incubation">egg incubation</a>.</dd> <dt id="broodiness"><dfn>broodiness </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Broodiness" title="Broodiness">Broodiness</a></div> <dd>Also defined: broody. The action or behavioural tendency of a bird to sit on a <a href="#clutch">clutch</a> of eggs to <a href="#egg_incubation">incubate</a> them, often requiring the non-expression of many other behaviours including feeding and drinking.<a href="#cite_note-RanquiniGarcia1958-57">[54]</a> The adjective "broody" is defined as "[b]eing in a state of readiness to brood eggs that is characterized by cessation of laying and by marked changes in behavior and physiology". Example usage: "a broody hen".<a href="#cite_note-58">[55]</a> </dd> <dt id="brood_patch"><dfn>brood patch </dfn></dt> <dd>A bare patch of skin that most female birds gain during the <a href="/wiki/Nesting_season" class="mw-redirect" title="Nesting season">nesting season</a> for <a href="/wiki/Thermoregulation" title="Thermoregulation">thermoregulation</a> purposes, by shedding feathers close to the belly, in an area that will be in contact with the eggs during <a href="#incubation">incubation</a>. The patch of bare skin is well supplied with blood vessels at the surface, facilitating heat transfer to the eggs.<a href="#cite_note-59">[56]</a></dd> <dt id="brood_parasite"><dfn>brood parasite </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Brood_parasite" class="mw-redirect" title="Brood parasite">Brood parasite</a></div> <dd>Birds, such as the <a href="/wiki/Common_goldeneye" title="Common goldeneye">common goldeneye</a>, <a href="/wiki/Indigobird" class="mw-redirect" title="Indigobird">indigobirds</a>, <a href="/wiki/Viduidae" title="Viduidae">whydahs</a>, <a href="/wiki/Honeyguide" title="Honeyguide">honeyguides</a>, <a href="/wiki/Cowbird" title="Cowbird">cowbirds</a> and <a href="/wiki/Cuckoos#Brood_parasitism" class="mw-redirect" title="Cuckoos">New World cuckoos</a>, that lay their eggs in other birds' nests, in order to have their chicks <a href="#incubated">incubated</a> through <a href="#fledging">fledging</a> by the parents of another bird, often of another species.<a href="#cite_note-60">[57]</a><a href="#cite_note-61">[58]</a><a href="#cite_note-62">[59]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="C">C</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=3" title="Edit section: C">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="calamus"><dfn>calamus </dfn></dt> <dd>Plural: calami. The basal part of the <a href="#quill">quill</a> of <a href="#pennaceous_feathers">pennaceous feathers</a>, which embeds at its proximal tip in the skin of a bird. The calamus is hollow and has pith formed from the dry remains of the feather pulp. The calamus stretches between two openings—at its base is the <a href="#inferior_umbilicus">inferior umbilicus</a> and at its distal end is the <a href="#superior_umbilicus">superior umbilicus</a>; the <a href="#rachis">rachis</a> of the stem, hosting the <a href="#vanes">vanes</a>, continues above it.<a href="#cite_note-Ritchison-63">[60]</a><a href="#cite_note-Chandler250-64">[61]</a> Calamus derives from the Latin for 'reed' or 'arrow'.<a href="#cite_note-65">[62]</a></dd> <div class="noprint wikilien_alternatif" style="clear:right; float:right; margin:0 0 1em 1em; width:280px; border:solid #c0c0c0 1px; padding:0px; font-size:90%; text-align:left;"> <table cellpadding="2" cellspacing="0" style="background-color:var(--background-color-neutral-subtle, #f8f9fa); color:var(--color-base, #202122);"> <tbody><tr style="vertical-align:middle;"> <td style="line-height:50px;vertical-align:middle;text-align:center;"> <a href="/wiki/Portal:Birds" title="Portal:Birds"><img alt="Dickcissel male perched on a metal pole singing, with neck stretched and beak open." src="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png/50px-Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png" decoding="async" width="50" height="76" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png/75px-Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/de/Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png/100px-Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png 2x" data-file-width="447" data-file-height="679" /></a> </td> <td style="vertical-align:middle;line-height:2;"> <div class="center" style="width:auto; margin-left:auto; margin-right:auto;">Songs and calls</div><hr /> The haunting <a href="#call">call</a> of the <a href="/wiki/Loon" title="Loon">loon</a>: <audio id="mwe_player_0" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" style="width:220px;" data-durationhint="25" data-mwtitle="Loons.ogg" data-mwprovider="wikimediacommons"><source src="//upload.wikimedia.org/wikipedia/commons/1/13/Loons.ogg" type="audio/ogg; codecs="vorbis"" data-width="0" data-height="0" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/1/13/Loons.ogg/Loons.ogg.mp3" type="audio/mpeg" data-transcodekey="mp3" data-width="0" data-height="0" /></audio> <div class="center" style="width:auto; margin-left:auto; margin-right:auto;"><a rel="nofollow" class="external text" href="http://www.xeno-canto.org/explore?query=Gaviidae">Listen to loons on xeno-canto</a> </div> </td></tr></tbody></table></div> <dt id="call"><dfn>call </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Bird_vocalization" title="Bird vocalization">Bird vocalization</a></div> <dd>Specific types: alarm; contact; duet; antiphonal duetting; food begging; flight; mobbing. A type of bird vocalization tending to serve such functions as giving alarm or keeping members of a <a href="/wiki/Herd" title="Herd">flock</a> in contact—as opposed to a bird's <a href="#song">song</a>, which is longer, more complex and is usually associated with <a href="/wiki/Bird#Breeding" title="Bird">courtship and mating</a>.<a href="#cite_note-Voices-66">[63]</a> Individual birds may be sensitive enough to identify each other through their calls. Many birds that nest in colonies can locate their chicks using their calls.<a href="#cite_note-67">[64]</a> Alarm calls are used to sound alarm to other individuals. Food-begging calls are made by baby birds to beg for food, such as the "wah" of infant <a href="/wiki/Blue_jay" title="Blue jay">blue jays</a>.<a href="#cite_note-MacKay2001-68">[65]</a> <a href="/wiki/Mobbing_(animal_behavior)#Mobbing_calls" title="Mobbing (animal behavior)">Mobbing calls</a> <a href="/wiki/Signaling_theory" class="mw-redirect" title="Signaling theory">signal</a> other individuals in <a href="/wiki/Mobbing_(animal_behavior)" title="Mobbing (animal behavior)">mobbing</a> species while harassing a predator. They differ from alarm calls, which alert other species members to allow escape from predators. As an example, the <a href="/wiki/Great_tit" title="Great tit">great tit</a>, a European songbird, uses such a signal to call on nearby birds to harass a perched <a href="/wiki/Bird_of_prey" title="Bird of prey">bird of prey</a>, such as an owl. This call occurs in the 4.5<a href="/wiki/Frequency_(sound)" class="mw-redirect" title="Frequency (sound)">kHz</a> range,<a href="#cite_note-69">[66]</a> and carries over long distances. However, when such prey species are in flight, they employ an alarm signal in the 7–8 kHz range. This call is less effective at traveling great distances, but is much more difficult for both owls and hawks to hear (and detect the direction from which the call came).<a href="#cite_note-70">[67]</a> Contact calls are used by birds for the purpose of letting others of their species know their location.<a href="#cite_note-Weaver34-71">[68]</a> Relatedly, flight calls are vocalizations made by birds while flying, which often serve to keep flocks together.<a href="#cite_note-Sibley68–69-72">[69]</a> These calls are also used for when birds want to alert others that they are taking flight.<a href="#cite_note-Rowinski2011-73">[70]</a> Many birds engage in duet calls—a call made by two birds at or nearly at the same time. In some cases, the duets are so perfectly timed as to appear almost as one call. This kind of calling is termed antiphonal duetting.<a href="#cite_note-74">[71]</a> Such duetting is noted in a wide range of families including quails,<a href="#cite_note-75">[72]</a> <a href="/wiki/Bushshrike" title="Bushshrike">bushshrikes</a>,<a href="#cite_note-76">[73]</a> <a href="/wiki/Old_world_babbler" class="mw-redirect" title="Old world babbler">babblers</a> such as <a href="/wiki/Scimitar_babbler" title="Scimitar babbler">scimitar babblers</a> and some owls<a href="#cite_note-77">[74]</a> and parrots.<a href="#cite_note-78">[75]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Balck_Heron_canopy_crop.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Balck_Heron_canopy_crop.jpg/220px-Balck_Heron_canopy_crop.jpg" decoding="async" width="220" height="148" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Balck_Heron_canopy_crop.jpg/330px-Balck_Heron_canopy_crop.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a0/Balck_Heron_canopy_crop.jpg/440px-Balck_Heron_canopy_crop.jpg 2x" data-file-width="534" data-file-height="359" /></a><figcaption>Black herons <a href="#canopy_feeding">canopy feeding</a>.</figcaption></figure> <dt id="canopy_feeding"><dfn>canopy feeding </dfn></dt> <dd>Also defined: double-wing feeding. Some <a href="/wiki/Heron" title="Heron">herons</a>, such as the <a href="/wiki/Black_heron" title="Black heron">black heron</a>, adopt an unusual position while hunting for prey. With their head held down in a hunting position, they sweep their wings forward to meet in front of their head, thereby forming an umbrella shaped canopy. To achieve full canopy closure, the <a href="/wiki/Flight_feather#Primaries" title="Flight feather">primaries</a> and <a href="/wiki/Flight_feather#Secondaries" title="Flight feather">secondaries</a> touch the water, the <a href="#nape">nape</a> feathers are erected and the tail is drooped. The bird may take several strides in this position. One theory about the function of this behaviour is that it reduces <a href="/wiki/Glare_(vision)" title="Glare (vision)">glare</a> from the water surface, allowing the bird to more easily locate and catch prey. Alternatively, the shade provided by the canopy may attract fish making their capture easier. Some herons adopt a similar behaviour called double-wing feeding in which the wings are swept forward to create an area of shade, though a canopy is not formed.<a href="#cite_note-79">[76]</a></dd> <dt id="carpal_bar"><dfn>carpal bar </dfn></dt> <dd>A patch seen on the <a href="#upperwing">upperwing</a> of some birds that usually appears as a long stripe or line. It is created by the contrast between the greater coverts and the other wing feathers.<a href="#cite_note-Floyd2008_495-80">[77]</a></dd> <dt id="caruncle"><dfn>caruncle </dfn></dt> <dd>The collective term for the several fleshy protuberances on the heads and throats of <a href="/wiki/Galliformes" title="Galliformes">gallinaceous</a> birds, i.e., <a href="#combs">combs</a>, <a href="#wattles">wattles</a>, ear lobes and nodules. They can be present on the head, neck, <a href="#throat">throat</a>, <a href="#cheeks">cheeks</a> or around the eyes of some birds. Caruncles may be featherless, or present with a small array of scattered feathers. In some species, they may form pendulous structures of <a href="/wiki/Erectile_tissue" title="Erectile tissue">erectile tissue</a>, such as the "<a href="/wiki/Snood_(anatomy)" class="mw-redirect" title="Snood (anatomy)">snood</a>" of the <a href="/wiki/Domestic_turkey" title="Domestic turkey">domestic turkey</a>.<a href="#cite_note-81">[78]</a><a href="#cite_note-82">[79]</a> While caruncles are ornamental elements used by males to attract females to breed,<a href="#cite_note-Burke-83">[80]</a> it has been proposed that these organs are also associated with genes that encode resistance to disease,<a href="#cite_note-BarattiAmmannati2010-84">[81]</a> and for birds living in tropical regions, that caruncles also play a role in thermoregulation by making the blood cool faster when flowing through them.<a href="#cite_note-85">[82]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Aceros_cassidix_-Vogelpark_Walsrode_-pair-8a.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Aceros_cassidix_-Vogelpark_Walsrode_-pair-8a.jpg/280px-Aceros_cassidix_-Vogelpark_Walsrode_-pair-8a.jpg" decoding="async" width="280" height="187" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Aceros_cassidix_-Vogelpark_Walsrode_-pair-8a.jpg/420px-Aceros_cassidix_-Vogelpark_Walsrode_-pair-8a.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Aceros_cassidix_-Vogelpark_Walsrode_-pair-8a.jpg/560px-Aceros_cassidix_-Vogelpark_Walsrode_-pair-8a.jpg 2x" data-file-width="1280" data-file-height="857" /></a><figcaption>A pair of <a href="/wiki/Knobbed_hornbill" title="Knobbed hornbill">knobbed hornbills</a> with prominent <a href="#casques">casques</a> on display</figcaption></figure> <dt id="casque"><dfn>casque </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Casque_(anatomy)" title="Casque (anatomy)">Casque (anatomy)</a></div> <dd>A horny ridge found on the <a href="#upper_mandible">upper mandible</a> of a bird's bill, especially used in relation to <a href="/wiki/Hornbill" title="Hornbill">hornbills</a> and <a href="/wiki/Cassowaries" class="mw-redirect" title="Cassowaries">cassowaries</a>,<a href="#cite_note-Blake1977-86">[83]</a><a href="#cite_note-PrattBeehler2014-87">[84]</a> though other birds may have casques such as <a href="/wiki/Common_moorhen" title="Common moorhen">common moorhens</a>,<a href="#cite_note-ReillySociety1968-88">[85]</a> <a href="/wiki/Tufted_puffin" title="Tufted puffin">tufted puffins</a><a href="#cite_note-Stejneger1885-89">[86]</a> and (male) <a href="/wiki/Friarbird" title="Friarbird">friarbirds</a>.<a href="#cite_note-Harris226-90">[87]</a> The ridge line on the <a href="#upper_maxilla">upper maxilla</a> may extend to a prominent crest on the front of the face and on the head, such as in the "flamboyant" crest of the <a href="/wiki/Rhinoceros_hornbill" title="Rhinoceros hornbill">rhinoceros hornbill</a>.<a href="#cite_note-Mobley339-91">[88]</a> Some hornbill casques contain a hollow space that may act as a <a href="/wiki/Resonance_chamber" title="Resonance chamber">resonance chamber</a>, amplifying <a href="#calls">calls</a>.<a href="#cite_note-Carnaby124-92">[89]</a> Similar function has been proposed for cassowary casques, as well as for protection of the head while dense vegetation is traversed, as a <a href="/wiki/Biological_ornament" title="Biological ornament">sexual ornament</a> and for use as a "shovel" for digging food.<a href="#cite_note-Mobley441-93">[90]</a> Compare: <a href="#frontal_shield">frontal shield</a>.</dd> <dt id="cere"><dfn>cere </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Cere" title="Beak">Beak § Cere</a></div> <dd>From the Latin cera meaning 'wax', a waxy structure which covers the base of the <a href="#bills">bills</a> of some bird species from a handful of families—including <a href="/wiki/Bird_of_prey" title="Bird of prey">raptors</a>, <a href="/wiki/Owl" title="Owl">owls</a>, <a href="/wiki/Skua" title="Skua">skuas</a>, <a href="/wiki/Parrot" title="Parrot">parrots</a>, <a href="/wiki/Turkey_(bird)" title="Turkey (bird)">turkeys</a> and <a href="/wiki/Curassow" title="Curassow">curassows</a>. The cere structure typically contains the <a href="#nares">nares</a>, except in owls, where the nares are distal to the cere. Although it is sometimes feathered in parrots,<a href="#cite_note-94">[91]</a> the cere is typically bare and often brightly coloured.<a href="#cite_note-Stettenheim-95">[92]</a> In raptors, the cere is a sexual signal which indicates the "quality" of a bird; the orangeness of a <a href="/wiki/Montague%27s_harrier" class="mw-redirect" title="Montague's harrier">Montague's harrier</a>'s cere, for example, correlates to its body mass and physical condition.<a href="#cite_note-Mougeo-96">[93]</a> The colour or appearance of the cere can be used to distinguish between males and females in some species. For example, the male <a href="/wiki/Great_curassow" title="Great curassow">great curassow</a> has a yellow cere, which the female (and young males) lack,<a href="#cite_note-97">[94]</a> and the male <a href="/wiki/Budgerigar" title="Budgerigar">budgerigar</a>'s cere is blue, while the female's is pinkish or brown.<a href="#cite_note-98">[95]</a></dd> <dt id="cheek"><dfn>cheek </dfn></dt> <dd>Also, malar / malar region. The area of the sides of a bird's head, behind and below the eyes.<a href="#cite_note-Pettingill9-99">[96]</a></dd> <dt id="chin"><dfn>chin </dfn></dt> <dd>A small feathered area located just below the base of the <a href="#bill">bill</a>'s <a href="#lower_mandible">lower mandible</a>.<a href="#cite_note-Vinicombe14-100">[97]</a></dd> <dt id="cloaca"><dfn>cloaca </dfn></dt> <dd>A multi-purpose opening terminating at the <a href="#vent">vent</a> at the posterior of a bird: birds expel waste from it; most birds mate by <a href="/wiki/Bird_anatomy#Reproduction" title="Bird anatomy">joining cloaca</a> (a "<a href="#cloacal_kiss">cloacal kiss</a>"); and females lay eggs from it. Birds do not have a <a href="/wiki/Urinary_bladder" class="mw-redirect" title="Urinary bladder">urinary bladder</a> or external urethral opening and (with exception of the <a href="/wiki/Ostrich#Description" title="Ostrich">ostrich</a>) uric acid is excreted from the cloaca, along with faeces, as a semisolid waste.<a href="#cite_note-101">[98]</a><a href="#cite_note-102">[99]</a><a href="#cite_note-coprodeum-103">[100]</a> Additionally, in those few bird species in which males possess a penis (<a href="/wiki/Palaeognathae" title="Palaeognathae">Palaeognathae</a> [with the exception of the <a href="/wiki/Kiwi_(bird)" title="Kiwi (bird)">kiwis</a>], the <a href="/wiki/Anseriformes" title="Anseriformes">Anseriformes</a> [with the exception of <a href="/wiki/Screamer" title="Screamer">screamers</a>] and in rudimentary forms in <a href="/wiki/Galliformes" title="Galliformes">Galliformes</a><a href="#cite_note-104">[101]</a><a href="#cite_note-105">[102]</a>) it is hidden within the <a href="/wiki/Proctodeum" title="Proctodeum">proctodeum</a> compartment within the cloaca, just inside the vent.<a href="#cite_note-Pettingill376-106">[103]</a></dd> <dt id="cloacal_kiss"><dfn>cloacal kiss </dfn></dt> <dd>Most male birds lack a <a href="/wiki/Phallus" title="Phallus">phallus</a> and instead have erectile <a href="/wiki/Genital_papilla" title="Genital papilla">genital papilla</a> at the terminus of their <a href="/wiki/Vas_deferens" title="Vas deferens">vas deferens</a>. When male and female birds of such species copulate, they each evert and then press together, or "kiss" their respective <a href="/wiki/Proctodeum" title="Proctodeum">proctodeum</a> (the lip of the cloaca). Upon the clocal kiss, the male's sperm spurts into the female's urodoeum (a compartment inside the <a href="#cloaca">cloaca</a>), which then make their way into the <a href="/wiki/Oviduct" title="Oviduct">oviduct</a>.<a href="#cite_note-Maxwell2013-107">[104]</a><a href="#cite_note-Doneley2016-108">[105]</a></dd> <dt id="clutch"><dfn>clutch </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Clutch_(eggs)" title="Clutch (eggs)">Clutch (eggs)</a></div> <dd>All of the eggs produced by birds often at a single time in a <a href="#nest">nest</a>. Clutch size differs greatly between species, sometimes even within the same <a href="/wiki/Genus" title="Genus">genus</a>. It may also differ intraspecies due to many factors including <a href="/wiki/Habitat_(ecology)" class="mw-redirect" title="Habitat (ecology)">habitat</a>, health, nutrition, predation pressures and time of year.<a href="#cite_note-109">[106]</a> Average clutch size ranges from one (as in <a href="/wiki/Northern_gannet" title="Northern gannet">northern gannet</a><a href="#cite_note-Pettingill310-110">[107]</a>) to about 17 (as in <a href="/wiki/Grey_partridge" title="Grey partridge">grey partridge</a><a href="#cite_note-McCabe1943-111">[108]</a>).</dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Rooster_portrait2.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Rooster_portrait2.jpg/180px-Rooster_portrait2.jpg" decoding="async" width="180" height="270" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/60/Rooster_portrait2.jpg/270px-Rooster_portrait2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/60/Rooster_portrait2.jpg/360px-Rooster_portrait2.jpg 2x" data-file-width="1334" data-file-height="2000" /></a><figcaption>A rooster with a large red <a href="#comb">comb</a></figcaption></figure> <dt id="comb"><dfn>comb </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Comb_(anatomy)" title="Comb (anatomy)">Comb (anatomy)</a></div> <dd>Also, cockscomb (coxcomb and other sp. variants). A fleshy growth or crest on the top of the head of <a href="/wiki/Galliformes" title="Galliformes">gallinaceous</a> birds, such as <a href="/wiki/Domestic_turkey" title="Domestic turkey">turkeys</a>, <a href="/wiki/Pheasant" title="Pheasant">pheasants</a> and domestic <a href="/wiki/Chicken" title="Chicken">chickens</a>. Its alternative name, cockscomb (or coxcomb) reflects that combs are generally larger on males than on females (a male gallinaceous bird is called a <a href="/wiki/Rooster" class="mw-redirect" title="Rooster">cock</a>). Comb shape varies considerably depending on the breed or species of bird. The "comb" most often refers to chickens in which the most common shape is the "single comb" of a rooster from breeds such as the <a href="/wiki/Leghorn_(chicken)" class="mw-redirect" title="Leghorn (chicken)">leghorn</a>. Other common comb types are the "rose comb" of, e.g., the eponymous <a href="/wiki/Rosecomb" title="Rosecomb">rosecomb</a>; the "pea comb" of, e.g., the <a href="/wiki/Brahma_(chicken)" class="mw-redirect" title="Brahma (chicken)">brahma</a> and <a href="/wiki/Araucana" title="Araucana">araucana</a>; and others.<a href="#cite_note-112">[109]</a></dd> <dt id="colony"><dfn>colony </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main articles: <a href="/wiki/Bird_colony" title="Bird colony">Bird colony</a>, <a href="/wiki/Communal_roosting" title="Communal roosting">Communal roosting</a>, <a href="/wiki/Heronry" title="Heronry">Heronry</a>, and <a href="/wiki/Rookery" title="Rookery">Rookery</a></div> <dd>Also defined: seabird colony; breeding colony; communal roost; heronries; rookery. A large congregation of individuals of one or more species of bird that nest or roost in proximity at a particular location. Many kinds of birds are known to congregate in groups of varying size; a congregation of nesting birds is called a breeding colony. A group of birds congregating for rest is called a <a href="/wiki/Communal_roosting" title="Communal roosting">communal roost</a>. Approximately 13% of all bird species nest colonially.<a href="#cite_note-Gill138–141-113">[110]</a> Nesting colonies are very common among seabirds on cliffs and islands. Nearly 95% of seabirds are colonial,<a href="#cite_note-114">[111]</a> leading to the usage, seabird colony, sometimes called a <a href="/wiki/Rookery" title="Rookery">rookery</a>. Many species of <a href="/wiki/Tern" title="Tern">terns</a> nest in colonies on the ground. <a href="/wiki/Heron" title="Heron">Herons</a>, <a href="/wiki/Egret" title="Egret">egrets</a>, <a href="/wiki/Stork" title="Stork">storks</a> and other large waterfowl also nest communally in what are called <a href="/wiki/Heronry" title="Heronry">heronries</a>. Colony nesting may be an evolutionary response to a shortage of safe nesting sites and abundance or unpredictable food sources which are far away from the nest sites.<a href="#cite_note-Roll-115">[112]</a></dd> <dt id="colour_morph"><dfn>colour morph</dfn></dt> <dd>See <a href="#morph">morph</a>.</dd> <dt id="commissure"><dfn>commissure</dfn></dt> <dd>Depending on usage, may refer to the junction of the <a href="#upper_mandible">upper</a> and <a href="#lower_mandible">lower</a> mandibles,<a href="#cite_note-116">[113]</a> or alternately, to the full-length apposition of the closed mandibles, from the corners of the mouth to the tip of the <a href="#beak">beak</a>.<a href="#cite_note-117">[114]</a></dd> <dt id="contact_call"><dfn>contact call </dfn></dt> <dd>A type of <a href="#call">call</a> used by birds for the purpose of letting others of their species know their location.<a href="#cite_note-Weaver34-71">[68]</a></dd> <dt id="corpuscles_of_herbst"><dfn>corpuscles of Herbst </dfn></dt> <dd>Nerve-endings similar to the <a href="/wiki/Pacinian_corpuscle" title="Pacinian corpuscle">Pacinian corpuscle</a>, found in the <a href="/wiki/Mucous_membrane" title="Mucous membrane">mucous membrane</a> of the <a href="/wiki/Tongue" title="Tongue">tongue</a>, in pits on the beak and in other parts of the bodies of birds. They differ from Pacinian corpuscles in being smaller and more elongated, in having thinner and more closely placed capsules and in that the axis-cylinder in the central clear space is encircled by a continuous row of <a href="/wiki/Cell_nucleus" title="Cell nucleus">nuclei</a>.<a href="#cite_note-Klein1785-118">[115]</a></dd> <dt id="coverts"><dfn>coverts </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Covert_feather" title="Covert feather">Covert feather</a></div> <dd>Also, covert feathers; tectrices – singular: tectrix. A layer of non-flight feathers overlaying and protecting the <a href="#quills">quills</a> of flight feathers. At least one layer of covert feathers appear both above and beneath the <a href="#flight_feathers">flight feathers</a> of the wings as well as above and below the <a href="#rectrices">rectrices</a> of the tail.<a href="#cite_note-Pierce-119">[116]</a> These feathers may vary widely in size. For example, the upper tail tectrices of peacocks—the male <a href="/wiki/Peafowl" title="Peafowl">peafowl</a>—rather than its rectrices, are what constitute its elaborate and colourful "train".<a href="#cite_note-Mobley295-120">[117]</a> There are a number of types and subtypes of covert feathers—primary, secondary, greater, lesser, marginal, median, etc.—see broadly <a href="#wing_coverts">wing coverts</a> and <a href="#tail_coverts">tail coverts</a>.</dd> <dt id="cranial_kinesis"><dfn>cranial kinesis </dfn></dt> <dd>Also defined: prokinesis, amphikinesis and distal rhynchokinesis. Movement of the <a href="#upper_mandible">upper mandible</a> in relation to the front of the skull. There is very little of this movement in birds that feed primarily through grazing and thus do not need to open their bills very widely. This is in contrast to parrots, which use their bills to manipulate food and as a support when climbing trees. There are multiple types of cranial kinesis: prokinesis, where the bill moves only at the craniofacial hinge; amphikinesis, where the whole upper jaw is raised; and distal rhynchokinesis, where the bill flexes somewhere along the length of the bill, compared to just at the base.<a href="#cite_note-Elphick2016-22-23-121">[118]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Umbrella_Cockatoo_(Cacatua_alba)_-Free_Flight_Aviary_-San_Diego.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/Umbrella_Cockatoo_%28Cacatua_alba%29_-Free_Flight_Aviary_-San_Diego.jpg/180px-Umbrella_Cockatoo_%28Cacatua_alba%29_-Free_Flight_Aviary_-San_Diego.jpg" decoding="async" width="180" height="308" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/Umbrella_Cockatoo_%28Cacatua_alba%29_-Free_Flight_Aviary_-San_Diego.jpg/270px-Umbrella_Cockatoo_%28Cacatua_alba%29_-Free_Flight_Aviary_-San_Diego.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/11/Umbrella_Cockatoo_%28Cacatua_alba%29_-Free_Flight_Aviary_-San_Diego.jpg/360px-Umbrella_Cockatoo_%28Cacatua_alba%29_-Free_Flight_Aviary_-San_Diego.jpg 2x" data-file-width="1899" data-file-height="3252" /></a><figcaption>A <a href="/wiki/White_cockatoo" title="White cockatoo">white cockatoo</a>, also called the umbrella cockatoo from the shape of its <a href="#crest">crest</a></figcaption></figure> <dt id="crest_feather"><dfn>crest feather </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Crest_(feathers)" title="Crest (feathers)">Crest (feathers)</a></div> <dd>Collectively, the/a crest. Long crest feathers are sometimes called quill feathers.<a href="#cite_note-Carnaby10-122">[119]</a> Also defined: recumbent crests and recursive crests. A type of <a href="#semiplume">semiplume</a> feather with a long <a href="#rachis">rachis</a> with <a href="#barbs">barbs</a> on either side, that often presents as a prominent tuft on the <a href="#crown">crown</a> and (or through) the neck and upper <a href="#back">back</a>.<a href="#cite_note-123">[120]</a><a href="#cite_note-Proctor64-124">[121]</a> Birds with crests include <a href="/wiki/Victoria_crowned_pigeon" title="Victoria crowned pigeon">Victoria crowned pigeons</a>, <a href="/wiki/Northern_lapwing" title="Northern lapwing">northern lapwings</a>, <a href="/wiki/Macaroni_penguin" title="Macaroni penguin">macaroni penguins</a> and others, but the most recognizable are <a href="/wiki/Cockatoos" class="mw-redirect" title="Cockatoos">cockatoos</a> and <a href="/wiki/Cockatiels" class="mw-redirect" title="Cockatiels">cockatiels</a>, which can raise or lower their crests at will and use them to communicate with fellow members of their species, or as a form of defence to frighten away other species that approach too closely, making the bird appear larger when the crest is suddenly and unexpectedly raised.<a href="#cite_note-Highfill-125">[122]</a> In some species the position of the crest is a threat signal that can be used to predict behaviour. In <a href="/wiki/Steller%27s_jay" title="Steller's jay">Steller's jays</a>, for example, a raised crest indicates a likelihood of attack, and a lowered crest indicates a likelihood of retreat.<a href="#cite_note-Gill318–319-126">[123]</a> Crests can be recumbent or recursive, depending on the species. The recumbent crest, such as in <a href="/wiki/White_cockatoo" title="White cockatoo">white cockatoos</a>, has feathers that are straight and lie down essentially flat on the head until fanned out.<a href="#cite_note-127">[124]</a> The recursive crest, such as in <a href="/wiki/Sulphur-crested_cockatoo" title="Sulphur-crested cockatoo">sulphur-crested cockatoos</a> and <a href="/wiki/Major_Mitchell%27s_cockatoo" class="mw-redirect" title="Major Mitchell's cockatoo">Major Mitchell's cockatoos</a>, is noticeable even when its feathers are not fanned out because they curve upward at the tips even when lying flat, and when standing up, often bend slightly forward toward the front of the head. Some birds, like <a href="/wiki/Galah" title="Galah">galahs</a> (also known as the rose-breasted cockatoo), have modified crests that have both recumbent and recursive features.<a href="#cite_note-Highfill-125">[122]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Grey_Catbird.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/16/Grey_Catbird.jpg/180px-Grey_Catbird.jpg" decoding="async" width="180" height="270" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/16/Grey_Catbird.jpg/270px-Grey_Catbird.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/16/Grey_Catbird.jpg/360px-Grey_Catbird.jpg 2x" data-file-width="1365" data-file-height="2048" /></a><figcaption>A <a href="/wiki/Grey_catbird" class="mw-redirect" title="Grey catbird">grey catbird</a>, with its distinctly coloured <a href="#crissum">crissum</a> on display</figcaption></figure> <dt id="crissum"><dfn>crissum</dfn></dt> <dd>The feathered area between the <a href="#vent">vent</a> and the <a href="#tail">tail</a>. Also, the collective name for the <a href="#undertail_coverts">undertail coverts</a>.<a href="#cite_note-Pettingill21-128">[125]</a> The <a href="/wiki/Crissal_thrasher" title="Crissal thrasher">crissal thrasher</a> derives its name from the term, having distinctive colouring in the region, in contrast with the balance of its <a href="#plumage">plumage</a>. Other birds having distinctive crissum colouration include <a href="/wiki/Le_Conte%27s_thrasher" class="mw-redirect" title="Le Conte's thrasher">Le Conte's thrashers</a> and <a href="/wiki/Grey_catbird" class="mw-redirect" title="Grey catbird">grey catbirds</a>.<a href="#cite_note-Burns2008-129">[126]</a></dd> <dt id="crop"><dfn>crop </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Crop_(anatomy)#Birds" title="Crop (anatomy)">Crop (anatomy) § Birds</a></div> <dd>An expanded, muscular pouch near the <a href="/wiki/Gullet" class="mw-redirect" title="Gullet">gullet</a> or throat found in some but not all birds. It is a part of the digestive tract, essentially an enlarged part of the <a href="/wiki/Esophagus" title="Esophagus">esophagus</a>, used for the storage of food prior to digestion. As with most other organisms that have a crop, birds use it to temporarily store food. In adult doves and pigeons, the crop can produce <a href="#crop_milk">crop milk</a> to feed newly-hatched chicks.<a href="#cite_note-130">[127]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Rosaflamingo-K%C3%BCken_-_Fuetterung_mit_Kropfmilch.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Rosaflamingo-K%C3%BCken_-_Fuetterung_mit_Kropfmilch.jpg/180px-Rosaflamingo-K%C3%BCken_-_Fuetterung_mit_Kropfmilch.jpg" decoding="async" width="180" height="270" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Rosaflamingo-K%C3%BCken_-_Fuetterung_mit_Kropfmilch.jpg/270px-Rosaflamingo-K%C3%BCken_-_Fuetterung_mit_Kropfmilch.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Rosaflamingo-K%C3%BCken_-_Fuetterung_mit_Kropfmilch.jpg/360px-Rosaflamingo-K%C3%BCken_-_Fuetterung_mit_Kropfmilch.jpg 2x" data-file-width="2336" data-file-height="3504" /></a><figcaption>A <a href="/wiki/Greater_flamingo" title="Greater flamingo">greater flamingo</a> chick being fed <a href="#crop_milk">crop milk</a></figcaption></figure> <dt id="crop_milk"><dfn>crop milk</dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Crop_milk" title="Crop milk">Crop milk</a></div> <dd>A secretion from the lining of the <a href="#crop">crop</a> of parent birds that is <a href="/wiki/Regurgitation_(digestion)" title="Regurgitation (digestion)">regurgitated</a> to young birds. It is found among all <a href="/wiki/Columbidae" title="Columbidae">pigeons and doves</a> where it is referred to as <a href="#pigeon_milk">pigeon milk</a>. An analogue to crop milk is also secreted from the esophagus of <a href="/wiki/Flamingo#Feeding" title="Flamingo">flamingos</a> and some <a href="/wiki/Penguin" title="Penguin">penguins</a>.<a href="#cite_note-Levi-131">[128]</a><a href="#cite_note-Prolactin-132">[129]</a><a href="#cite_note-133">[130]</a> Crop milk bears little physical resemblance to <a href="/wiki/Mammal" title="Mammal">mammalian</a> <a href="/wiki/Milk" title="Milk">milk</a>, the former being a semi-solid substance somewhat like pale yellow <a href="/wiki/Cottage_cheese" title="Cottage cheese">cottage cheese</a>. It is extremely high in <a href="/wiki/Protein" title="Protein">protein</a> and <a href="/wiki/Fat" title="Fat">fat</a>, containing higher levels than cow or human milk<a href="#cite_note-134">[131]</a> and has been shown to also contain <a href="/wiki/Antioxidants" class="mw-redirect" title="Antioxidants">antioxidants</a> and immune-enhancing factors.<a href="#cite_note-135">[132]</a></dd> <dt id="crown"><dfn>crown </dfn></dt> <dd>Also defined: occiput / hindhead. The portion of a bird's head found between the <a href="#forehead">forehead</a>—demarcated by an imaginary line drawn from the anterior corners of the eyes—and through the "remainder of the upper part of the head", to the <a href="#superciliary_line">superciliary line</a>. The occiput or hindhead, is the posterior part of the crown.<a href="#cite_note-Pettingill10-136">[133]</a></dd> <dt id="cryptic_plumage"><dfn>cryptic plumage </dfn></dt> <dd>Also defined: phaneric plumage. Plumage of a bird that is camouflaging. For example, the white winter plumage of <a href="/wiki/Lagopus" title="Lagopus">ptarmigans</a> is cryptic as it serves to conceal it in snowy environments.<a href="#cite_note-Gill1106-137">[134]</a> The opposite, "advertising" plumage, is termed "phaneric", such as male birds in colourful <a href="#nuptial_plumage">nuptial plumage</a> for sexual display, making them stand out to a high degree.<a href="#cite_note-Ryser1985-138">[135]</a></dd> <dt id="culmen"><dfn>culmen</dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Culmen" title="Beak">Beak § Culmen</a></div> <dd>The <a href="/wiki/Dorsum_(anatomy)" class="mw-redirect" title="Dorsum (anatomy)">dorsal</a> ridge of the <a href="#upper_mandible">upper mandible</a>.<a href="#cite_note-139">[136]</a> Likened by ornithologist <a href="/wiki/Elliott_Coues" title="Elliott Coues">Elliott Coues</a> to the ridge line of a roof, it is the "highest middle lengthwise line of the bill" and runs from the point where the upper mandible emerges from the forehead's feathers to its tip.<a href="#cite_note-140">[137]</a> The <a href="#bill">bill</a>'s length along the culmen is one of the regular measurements made during <a href="/wiki/Bird_ringing" title="Bird ringing">bird ringing</a><a href="#cite_note-Pyle-141">[138]</a> and is particularly useful in feeding studies.<a href="#cite_note-Borras-142">[139]</a> The shape or colour of the culmen can also help with the identification of birds in the field. For example, the culmen of the <a href="/wiki/Parrot_crossbill" title="Parrot crossbill">parrot crossbill</a> is strongly decurved, while that of the very similar appearing <a href="/wiki/Red_crossbill" title="Red crossbill">red crossbill</a> is more moderately curved.<a href="#cite_note-143">[140]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="D">D</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=4" title="Edit section: D">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="definitive_plumage"><dfn>definitive plumage </dfn></dt> <dd>Adult <a href="/wiki/Plumage" title="Plumage">plumage</a> sufficiently developed and fixed following the juvenile years such that it no longer changes significantly in appearance with age.<a href="#cite_note-Pettingill189-192-33">[31]</a></dd> <dt id="diastataxis"><dfn>diastataxis</dfn></dt> <dd>The state of lacking a fifth <a href="#secondary_feather">secondary feather</a> on each wing, which occurs in birds in more than 40 non-passerine families. In these birds, the fifth set of secondary <a href="/wiki/Covert_feather" title="Covert feather">covert feathers</a> does not cover any <a href="#remex">remex</a>. <a href="/wiki/Loon" title="Loon">Loons</a>, <a href="/wiki/Grebe" title="Grebe">grebes</a>, <a href="/wiki/Pelican" title="Pelican">pelicans</a>, <a href="/wiki/Hawk" title="Hawk">hawks</a> and <a href="/wiki/Eagle" title="Eagle">eagles</a>, <a href="/wiki/Crane_(bird)" title="Crane (bird)">cranes</a>, <a href="/wiki/Sandpiper" title="Sandpiper">sandpipers</a>, <a href="/wiki/Gull" title="Gull">gulls</a>, <a href="/wiki/Parrot" title="Parrot">parrots</a> and <a href="/wiki/Owl" title="Owl">owls</a> are among the families missing this feather.<a href="#cite_note-Campbell656-20">[18]</a></dd> <dt id="dietary_classification_terms_(-vores)"><dfn>dietary classification terms (-vores) </dfn></dt> <dd>Birds may be classified by terms related to the types of foods they forage for and eat.<a href="#cite_note-Carnaby334-144">[141]</a> The -vore suffix is derived from the Latin vorare, meaning 'to devour'. Equivalent adjectives can be formed through use of the suffix -vorous.<a href="#cite_note-145">[142]</a> For example, granivore (n.) / granivorous (adj.). Generally, classification terms are used based on predominance of food source and/or specialization. There can be much cross-over and mixing between classifications. For example, insectivores and piscivores may at times be described more broadly as types of carnivores, and hummingbirds, though they do eat insects, are often described as nectarivores, rather than insectivores, as nectar is a specialized and predominant food foraging source for that bird family.<a href="#cite_note-HoseyMelfi2013-146">[143]</a> The feeding strategies of birds is intimately tied to their physiology and evolutionary development. For example, <a href="#beak">beak</a> shape and structure such as the makeup of the <a href="#tomia">tomia</a>, the presence (or not) of a <a href="#bill_tip_organ">bill tip organ</a> and myriad other adaptations are tied to a species' feeding strategies.<a href="#cite_note-Scanes2014-147">[144]</a> Feeding habits also correlate with aspects of brain development and size. For example, the <a href="/wiki/Spatial_memory" title="Spatial memory">spatial memory</a> of birds that store food in various locations has been shown to be highly developed and contributes towards success at that feeding tactic.<a href="#cite_note-AdamsPedersen2000-148">[145]</a></dd> <dl><dd><table border="1"> <tbody><tr> <td><a href="/wiki/Carnivore" title="Carnivore">carnivores</a> (sometimes called faunivores): birds that predominantly forage for the meat of vertebrates—generally hunters as in certain birds of prey—including <a href="/wiki/Eagle" title="Eagle">eagles</a>, <a href="/wiki/Owl" title="Owl">owls</a> and <a href="/wiki/Shrike" title="Shrike">shrikes</a>, though piscivores, insectivores and crustacivores may be called specialized types of carnivores.<a href="#cite_note-IrwinStoner2013-149">[146]</a> </td></tr> <tr> <td><a href="/w/index.php?title=Crustacivore&action=edit&redlink=1" class="new" title="Crustacivore (page does not exist)">crustacivores</a>: birds that forage for and eat <a href="/wiki/Crustacean" title="Crustacean">crustaceans</a>, such as <a href="/wiki/Crab-plover" title="Crab-plover">crab-plovers</a> and some <a href="/wiki/Rallidae" class="mw-redirect" title="Rallidae">rails</a>.<a href="#cite_note-IrwinStoner2013-149">[146]</a> </td></tr> <tr> <td><a href="/wiki/Detritivore" title="Detritivore">detritivores</a>: birds that forage for and eat decomposing material, such as <a href="/wiki/Vulture" title="Vulture">vultures</a>. It is usually used as a more general term than "saprovore" (defined below), which often connotes the eating of decaying flesh alone.<a href="#cite_note-Moore2009-150">[147]</a> </td></tr> <tr> <td><a href="/wiki/Florivore" title="Florivore">florivores</a>: birds that forage for and eat plant material in general. Other terms for plant foraging specialization may apply to florivorous species, such as "frugivore" and "granivore".<a href="#cite_note-Klasing1998-151">[148]</a> </td></tr> <tr> <td><a href="/wiki/Folivore" title="Folivore">folivores</a>: birds that forage for and eat leaves, such as <a href="/wiki/Hoatzin" title="Hoatzin">hoatzin</a> and <a href="/wiki/Mousebird" title="Mousebird">mousebirds</a>.<a href="#cite_note-Carnaby334-144">[141]</a><a href="#cite_note-IrwinStoner2013-149">[146]</a> </td></tr> <tr> <td><a href="/wiki/Frugivore" title="Frugivore">frugivores</a>: birds that forage for and eat fruit, such as <a href="/wiki/Turaco" title="Turaco">turacos</a>, <a href="/wiki/Tanager" title="Tanager">tanagers</a> and <a href="/wiki/Bird-of-paradise" title="Bird-of-paradise">birds-of-paradise</a>.<a href="#cite_note-IrwinStoner2013-149">[146]</a> </td></tr> <tr> <td><a href="/wiki/Granivores" class="mw-redirect" title="Granivores">granivores</a>: (sometimes called seed-eating): birds that forage for seeds and grains,<a href="#cite_note-Swan1848-152">[149]</a> such as <a href="/wiki/Geese" class="mw-redirect" title="Geese">geese</a>, <a href="/wiki/Grouse" title="Grouse">grouse</a> and <a href="/wiki/Estrildid_finch" class="mw-redirect" title="Estrildid finch">estrildid finches</a>.<a href="#cite_note-Carnaby334-144">[141]</a><a href="#cite_note-IrwinStoner2013-149">[146]</a> </td></tr> <tr> <td><a href="/wiki/Herbivore" title="Herbivore">herbivore</a>: birds that predominantly eat plant material, and mostly do not eat meat; especially of birds that are both granivorous and frugivorous or are grass eaters, such as <a href="/wiki/Whistling_duck" title="Whistling duck">whistling ducks</a>, <a href="/wiki/Ostrich" title="Ostrich">ostriches</a> and <a href="/wiki/Mute_swan" title="Mute swan">mute swans</a>.<a href="#cite_note-IrwinStoner2013-149">[146]</a><a href="#cite_note-Newton1998-153">[150]</a> </td></tr> <tr> <td><a href="/wiki/Insectivore" title="Insectivore">insectivores</a>: birds that forage for and eat insects and other <a href="/wiki/Arthropods" class="mw-redirect" title="Arthropods">arthropods</a>, such as <a href="/wiki/Cuckoo" title="Cuckoo">cuckoos</a>, <a href="/wiki/Swallow" title="Swallow">swallows</a>, <a href="/wiki/Thrush_(bird)" title="Thrush (bird)">thrushes</a>, <a href="/wiki/Drongo" title="Drongo">drongos</a> and <a href="/wiki/Woodpecker" title="Woodpecker">woodpeckers</a>.<a href="#cite_note-Carnaby334-144">[141]</a><a href="#cite_note-IrwinStoner2013-149">[146]</a> </td></tr> <tr> <td><a href="/wiki/Nectarivore" title="Nectarivore">nectarivores</a>: birds that drink the <a href="/wiki/Nectar" title="Nectar">nectar</a> of flowers, such as <a href="/wiki/Hummingbird" title="Hummingbird">hummingbirds</a>, <a href="/wiki/Sunbird" title="Sunbird">sunbirds</a> and <a href="/wiki/Lorikeet" class="mw-redirect" title="Lorikeet">lorikeets</a>.<a href="#cite_note-IrwinStoner2013-149">[146]</a> </td></tr> <tr> <td><a href="/wiki/Omnivore" title="Omnivore">omnivores</a> (sometimes called general feeders): birds that forage for a variety of both plant and meat food sources, such as <a href="/wiki/Pheasant" title="Pheasant">pheasants</a>, <a href="/wiki/Tinamous" class="mw-redirect" title="Tinamous">tinamouses</a> and <a href="/wiki/Quail" title="Quail">quails</a>. More birds fall under the omnivore classification than any other.<a href="#cite_note-IrwinStoner2013-149">[146]</a> </td></tr> <tr> <td><a href="/wiki/Piscivore" title="Piscivore">piscivores</a>: birds that forage for and eat fish and other sea life, such as <a href="/wiki/Darter" title="Darter">darters</a>, <a href="/wiki/Loon" title="Loon">loons</a>, <a href="/wiki/Pelican" title="Pelican">pelicans</a>, <a href="/wiki/Penguin" title="Penguin">penguins</a> and <a href="/wiki/Stork" title="Stork">storks</a>.<a href="#cite_note-Carnaby334-144">[141]</a><a href="#cite_note-IrwinStoner2013-149">[146]</a> </td></tr> <tr> <td><a href="/wiki/Sanguinivore" class="mw-redirect" title="Sanguinivore">sanguinivores</a>: birds that forage for and drink blood, such as <a href="/wiki/Oxpecker" title="Oxpecker">oxpeckers</a> and <a href="/wiki/Sharp-beaked_ground_finch" title="Sharp-beaked ground finch">sharp-beaked ground finches</a>.<a href="#cite_note-Carnaby334-144">[141]</a><a href="#cite_note-Klasing1998-151">[148]</a> </td></tr> <tr> <td>saprovores: birds that forage for and eat decaying flesh (<a href="/wiki/Carrion" title="Carrion">carrion</a>), such as <a href="/wiki/Vulture" title="Vulture">vultures</a> and <a href="/wiki/Crow" title="Crow">crows</a>.<a href="#cite_note-Carnaby334-144">[141]</a> However, the term is also used at times synonymously with "detritivore" (defined above), for eaters of any dead matter.<a href="#cite_note-Carnaby334-144">[141]</a><a href="#cite_note-Moore2009-150">[147]</a><a href="#cite_note-Selby1969-154">[151]</a> </td></tr></tbody></table></dd></dl> <dt id="dimorphism"><dfn>dimorphism</dfn></dt> <dd>See <a href="#sexual_dimorphism">sexual dimorphism</a>.</dd> <dt id="diving"><dfn>diving </dfn></dt> <dd>Also defined: surface diving; plunge diving. Some birds dive into the water for food. Two diving strategies are differentiated: surface diving birds dive from the surface of the water and swim actively underwater; and plunge diving birds dive from the air into the water. Plunge diving birds may use the momentum from the plunge to propel themselves underwater, whereas others may swim actively.<a href="#cite_note-Elphick110-1-155">[152]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Eider.a.duvet4.jpg" class="mw-file-description"><img alt="refer to caption" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Eider.a.duvet4.jpg/220px-Eider.a.duvet4.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Eider.a.duvet4.jpg/330px-Eider.a.duvet4.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Eider.a.duvet4.jpg/440px-Eider.a.duvet4.jpg 2x" data-file-width="650" data-file-height="433" /></a><figcaption>A female <a href="/wiki/Common_eider" title="Common eider">common eider</a> sits on her nest, surrounded by <a href="#down_feathers">down feathers</a></figcaption></figure> <dt id="down"><dfn>down </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Down_feather" title="Down feather">Down feather</a></div> <dd>Also, down feathers or plumulaceous feathers. The down of birds—their plumulaceous feathers, as opposed to <a href="#pennaceous_feathers">pennaceous feathers</a>—are a layer of fine, silky feathers found under the tougher exterior feathers, that are often used by humans as a thermal insulator and padding in goods such as jackets, bedding, pillows and sleeping bags. Considered to be the "simplest" of all feather types,<a href="#cite_note-156">[153]</a> down feathers have a short or vestigial <a href="/wiki/Rachis" title="Rachis">rachis</a> (shaft), few <a href="/wiki/Barb_(feather)" class="mw-redirect" title="Barb (feather)">barbs</a> and <a href="/wiki/Barbule" class="mw-redirect" title="Barbule">barbules</a> that lack hooks,<a href="#cite_note-HBW39-157">[154]</a> and (unlike <a href="#contour_feathers">contour feathers</a>) grow from both the <a href="#pterylae">pterylae</a> and the <a href="#apteria">apteria</a>.<a href="#cite_note-Chandler250-64">[61]</a> Very young birds are often only clad in down. The loose structure of down feathers traps air, which helps to insulate birds against heat loss<a href="#cite_note-Sibley17-54">[51]</a> and contributes to the buoyancy of waterbirds. Species that experience annual temperature fluctuations typically have more down feathers following their autumn moult.<a href="#cite_note-Scott31-158">[155]</a> There are three types of down: <a href="#natal_down">natal down</a>, <a href="#body_down">body down</a> and <a href="#powder_down">powder down</a>.<a href="#cite_note-159">[156]</a></dd> <dt id="drumming"><dfn>drumming</dfn></dt> <dd>A form of non-vocal communication engaged in by members of the <a href="/wiki/Woodpecker" title="Woodpecker">woodpecker</a> family. It involves the <a href="#beak">beak</a> striking a hard surface multiple times per second. The drumming pattern, the number of beats per roll and the gap between rolls is specific to each species. Drumming is usually associated with <a href="/wiki/Territory_(animal)" title="Territory (animal)">territorial behaviour</a>, with male birds drumming more frequently than females.<a href="#cite_note-Gorman2014-160">[157]</a> Drumming may also refer to the <a href="/wiki/Drumming_(snipe)" title="Drumming (snipe)">sounds</a> produced by the specialised outer tail-feathers of <a href="/wiki/Snipe" title="Snipe">snipe</a> in the course of their courtship display flights.<a href="#cite_note-BBY-161">[158]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="E">E</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=5" title="Edit section: E">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Comparison_of_eggs_by_Zureks.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Comparison_of_eggs_by_Zureks.jpg/220px-Comparison_of_eggs_by_Zureks.jpg" decoding="async" width="220" height="217" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Comparison_of_eggs_by_Zureks.jpg/330px-Comparison_of_eggs_by_Zureks.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/19/Comparison_of_eggs_by_Zureks.jpg/440px-Comparison_of_eggs_by_Zureks.jpg 2x" data-file-width="829" data-file-height="819" /></a><figcaption><a href="#eggs">Eggs</a> of: ostrich, emu, kiwi and chicken</figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="ear-coverts"><dfn>ear-coverts </dfn></dt> <dd>Small <a href="#covert">covert</a> feathers located behind a bird's eye, in one to four rows, which cover the ear opening (bird ears have no external features<a href="#cite_note-Jasper-162">[159]</a>) and may aid in the acuity of bird hearing.<a href="#cite_note-FarnerKing2013-163">[160]</a></dd> <dt id="egg"><dfn>egg </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Egg" title="Egg">Egg</a></div> <dd>Also defined: eggshell; yolk; albumen; chalaza. The organic vessel containing the <a href="/wiki/Zygote" title="Zygote">zygote</a>, in which birds develop until hatching. Eggs are usually oval in shape, and have a base white colour from the predominant <a href="/wiki/Calcium_carbonate" title="Calcium carbonate">calcium carbonate</a> makeup of the outer shell, called the eggshell, though <a href="#passerine">passerine</a> birds especially may have eggs of other colours,<a href="#cite_note-164">[161]</a> such as through deposition of <a href="/wiki/Biliverdin" title="Biliverdin">biliverdin</a> and its zinc <a href="/wiki/Chelate" class="mw-redirect" title="Chelate">chelate</a>, which give a green or blue ground colour, and <a href="/wiki/Protoporphyrin" class="mw-redirect" title="Protoporphyrin">protoporphyrin</a> which produces reds and browns.<a href="#cite_note-HillMcGraw2006-165">[162]</a> A viable bird egg (as opposed to a non-viable egg: see <a href="#addled_eggs">addled eggs</a>) consists of a number of structures. The eggshell is 95–97% calcium carbonate crystals, at least in chickens, stabilized by a protein matrix,<a href="#cite_note-166">[163]</a><a href="#cite_note-Hunton-167">[164]</a><a href="#cite_note-168">[165]</a> without which the crystalline structure would be too brittle to keep its form; the organic matrix is thought to have a role in deposition of calcium during the mineralization process.<a href="#cite_note-169">[166]</a><a href="#cite_note-170">[167]</a><a href="#cite_note-171">[168]</a> The structure and composition of the avian eggshell serves to protect the egg against damage and microbial contamination, prevention of desiccation, regulation of gas and water exchange for the growing embryo and provides calcium for <a href="/wiki/Embryogenesis" class="mw-redirect" title="Embryogenesis">embryogenesis</a>.<a href="#cite_note-Hunton-167">[164]</a> Inside the eggshell are two shell membranes (inner and outer), and at the center is a <a href="/wiki/Yolk" title="Yolk">yolk</a>—a spherical structure, usually some shade of yellow, to which the fertilized <a href="/wiki/Gamete" title="Gamete">gamete</a> attaches and which the embryonic bird uses as sustenance as it grows. The yolk is suspended in the <a href="/wiki/Albumen" class="mw-redirect" title="Albumen">albumen</a> (also called egg white or glair / glaire) by one or two spiral bands of tissue called the <a href="/wiki/Chalaza" title="Chalaza">chalazae</a>.<a href="#cite_note-Alderton1998-172">[169]</a> The albumen protects the yolk and provides additional nutrition for the embryo's growth,<a href="#cite_note-Harrison2011-173">[170]</a> though it is made up of approximately 90% water in most birds.<a href="#cite_note-Damerow2013-174">[171]</a> Prior to fertilization, the yolk is a single <a href="/wiki/Cell_(biology)" title="Cell (biology)">cell</a> <a href="/wiki/Ovum" class="mw-redirect" title="Ovum">ovum</a> or egg cell; one of the few single cells that can be seen by the naked eye.<a href="#cite_note-Patten2008-175">[172]</a></dd> <dt id="egg_binding"><dfn>egg binding </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Egg_binding" title="Egg binding">Egg binding</a></div> <dd>An egg that while traversing the reproductive tract during the process of being laid, becomes stuck near to the opening of the <a href="#cloaca">cloaca</a> or further inside the <a href="/wiki/Oviduct" title="Oviduct">oviduct</a>.<a href="#cite_note-176">[173]</a> The condition may be caused by obesity, nutritional imbalances such as calcium deficiency, environmental stress such as temperature changes, or malformed eggs.<a href="#cite_note-177">[174]</a> </dd> <dt id="egg_incubation"><dfn>egg incubation </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Egg_incubation" title="Egg incubation">Egg incubation</a></div> <dd>Also, brooding. The general care of unhatched eggs by parent birds (more often by females but by birds of both sexes), especially by temperature regulation through sitting on them, crouching or squatting over them, covering them with their wings, providing shade, wetting eggs and related behaviours. The target temperature of most species is 37 °C (99 °F) to 38 °C (100 °F). In monogamous species incubation duties are often shared, whereas in polygamous species one parent is wholly responsible for incubation. Warmth from parents passes to the eggs through <a href="#brood_patches">brood patches</a>—areas of bare skin on the abdomen or breast of the incubating birds. Incubation can be an energetically demanding process; adult <a href="/wiki/Albatross" title="Albatross">albatrosses</a>, for instance, lose as much as 83 grams (2.9 oz) of body weight per day of incubation.<a href="#cite_note-Barrows2000-178">[175]</a><a href="#cite_note-Gill1459-179">[176]</a><a href="#cite_note-180">[177]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Poicephalus_senegalus_-egg_tooth_-two_weeks-21July07.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Poicephalus_senegalus_-egg_tooth_-two_weeks-21July07.JPG/220px-Poicephalus_senegalus_-egg_tooth_-two_weeks-21July07.JPG" decoding="async" width="220" height="185" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Poicephalus_senegalus_-egg_tooth_-two_weeks-21July07.JPG/330px-Poicephalus_senegalus_-egg_tooth_-two_weeks-21July07.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Poicephalus_senegalus_-egg_tooth_-two_weeks-21July07.JPG/440px-Poicephalus_senegalus_-egg_tooth_-two_weeks-21July07.JPG 2x" data-file-width="1552" data-file-height="1304" /></a><figcaption>A <a href="/wiki/Senegal_parrot" title="Senegal parrot">Senegal parrot</a> chick at about two weeks after hatching. The <a href="#egg_tooth">egg tooth</a> is near the tip of its beak on the <a href="#upper_mandible">upper mandible</a>.</figcaption></figure> <dt id="egg_tooth"><dfn>egg tooth </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Egg_tooth" title="Beak">Beak § Egg tooth</a></div> <dd>A small, sharp, <a href="/wiki/Calcified" class="mw-redirect" title="Calcified">calcified</a> projection on the beak that full-term chicks of most bird species have, which they use to chip their way out of their <a href="/wiki/Egg_(biology)" class="mw-redirect" title="Egg (biology)">egg</a>.<a href="#cite_note-Campbell178-181">[178]</a> This white spike is located near the tip of the <a href="#upper_mandible">upper mandible</a> in most species (e.g., <a href="/wiki/Gull" title="Gull">gulls</a>);<a href="#cite_note-Jehl-182">[179]</a> near the tip of the <a href="#lower_mandible">lower mandible</a> instead in a minority of others, such as <a href="/wiki/Northern_lapwing" title="Northern lapwing">northern lapwings</a>;<a href="#cite_note-Jehl-182">[179]</a> with a few species, such as <a href="/wiki/Eurasian_whimbrel" title="Eurasian whimbrel">Eurasian whimbrels</a>, <a href="/wiki/Black-winged_stilt" title="Black-winged stilt">black-winged stilts</a> and <a href="/wiki/Semipalmated_sandpiper" title="Semipalmated sandpiper">semipalmated sandpipers</a>,<a href="#cite_note-Jehl-182">[179]</a> having one on each mandible.<a href="#cite_note-Perrins-183">[180]</a> Despite its name, the projection is not an actual <a href="/wiki/Tooth" title="Tooth">tooth</a> (as the similarly-named projections of some <a href="/wiki/Reptile" title="Reptile">reptiles</a> are); instead, it is part of the <a href="/wiki/Integumentary_system" title="Integumentary system">integumentary system</a>, as are <a href="/wiki/Claw" title="Claw">claws</a> and <a href="#scales">scales</a>.<a href="#cite_note-184">[181]</a> The hatching chick first uses its egg tooth to break the membrane around an air chamber at the wide end of the egg. Then it pecks at the eggshell while turning slowly within the egg, eventually (over a period of hours or days) creating a series of small circular fractures in the shell.<a href="#cite_note-Gill427-185">[182]</a> Once it has breached the egg's surface, the chick continues to chip at it until it has made a large hole. The weakened egg eventually shatters under the pressure of the bird's movements.<a href="#cite_note-Gill428-186">[183]</a> The egg tooth is so critical to a successful escape from the egg that chicks of most species will perish unhatched if they fail to develop one.<a href="#cite_note-Perrins-183">[180]</a></dd> <dt id="emargination"><dfn>emargination </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather#Emargination" title="Flight feather">Flight feather § Emargination</a></div> <dd>A pronounced narrowing at some variable distance along the feather edges at the outermost <a href="#primaries">primaries</a> of large soaring birds, particularly raptors. Whether these narrowings are called <a href="#notches">notches</a> or emarginations' depends on the degree of their slope.<a href="#cite_note-Campbell656-20">[18]</a> An emargination is a gradual change, and can be found on either side of the feather. A notch is an abrupt change, and is only found on the wider trailing edge of the remige. The presence of notches and emarginations creates gaps at the wingtip; air is forced through these gaps, increasing the generation of lift.<a href="#cite_note-Trail6-187">[184]</a></dd> <dt id="eye-ring"><dfn>eye-ring </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Eye-ring" title="Eye-ring">Eye-ring</a></div> <dd>Also defined: orbital ring. A visible ring of feathers around a bird's eye; the eye-ring is often paler than the surrounding feathers. By contrast, an orbital ring is bare skin ringing the eye. In some species, such as <a href="/wiki/Little_ringed_plover" title="Little ringed plover">little ringed plover</a>, the orbital ring may be quite conspicuous.<a href="#cite_note-Vinicombe14-100">[97]</a></dd> <dt id="eyestripe"><dfn>eyestripe </dfn></dt> <dd>Also, eye line / eyeline. A visible stripe on the feathers of a bird's head, often darker than the surrounding feathers, running through the eye region.<a href="#cite_note-Vinicombe14-100">[97]</a> Compare <a href="#supercilium">supercilium</a>.</dd> <style data-mw-deduplicate="TemplateStyles:r1248256098">@media all and (max-width:720px){.mw-parser-output .mod-gallery{width:100%!important}}.mw-parser-output .mod-gallery{display:table}.mw-parser-output .mod-gallery-default{background:transparent;margin-top:4px}.mw-parser-output .mod-gallery-center{margin-left:auto;margin-right:auto}.mw-parser-output .mod-gallery-left{float:left}.mw-parser-output .mod-gallery-right{float:right}.mw-parser-output .mod-gallery-none{float:none}.mw-parser-output .mod-gallery-collapsible{width:100%}.mw-parser-output .mod-gallery .title,.mw-parser-output .mod-gallery .main,.mw-parser-output .mod-gallery .footer{display:table-row}.mw-parser-output .mod-gallery .title>div{display:table-cell;padding:0 4px 4px;text-align:center;font-weight:bold}.mw-parser-output .mod-gallery .main>div{display:table-cell}.mw-parser-output .mod-gallery .gallery{line-height:1.35em}.mw-parser-output .mod-gallery .footer>div{display:table-cell;padding:4px;text-align:right;font-size:85%;line-height:1em}.mw-parser-output .mod-gallery .title>div *,.mw-parser-output .mod-gallery .footer>div *{overflow:visible}.mw-parser-output .mod-gallery .gallerybox img{background:none!important}.mw-parser-output .mod-gallery .bordered-images .thumb img{border:solid var(--background-color-neutral,#eaecf0)1px}.mw-parser-output .mod-gallery .whitebg .thumb{background:var(--background-color-base,#fff)!important}</style><div class="mod-gallery mod-gallery-default mod-gallery-center"><div class="title"><div>Eye features</div></div><div class="main"><div><ul class="gallery mw-gallery-traditional nochecker bordered-images whitebg"> <li class="gallerybox" style="width: 185px"> <div class="thumb" style="width: 180px; height: 210px;"><a href="/wiki/File:Blue-headed_Vireo-cropped.jpeg" class="mw-file-description" title="Blue-headed vireo, with a conspicuous eye-ring"><img alt="Blue-headed vireo, with a conspicuous eye-ring" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Blue-headed_Vireo-cropped.jpeg/150px-Blue-headed_Vireo-cropped.jpeg" decoding="async" width="150" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Blue-headed_Vireo-cropped.jpeg/225px-Blue-headed_Vireo-cropped.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Blue-headed_Vireo-cropped.jpeg/300px-Blue-headed_Vireo-cropped.jpeg 2x" data-file-width="875" data-file-height="975" /></a></div> <div class="gallerytext"><a href="/wiki/Blue-headed_vireo" title="Blue-headed vireo">Blue-headed vireo</a>, with a conspicuous <a href="#eye-ring">eye-ring</a></div> </li> <li class="gallerybox" style="width: 185px"> <div class="thumb" style="width: 180px; height: 210px;"><a href="/wiki/File:Little_ringed_plover-chick-cropped.jpeg" class="mw-file-description" title="Little ringed plover chick, with a conspicuous orbital ring"><img alt="Little ringed plover chick, with a conspicuous orbital ring" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Little_ringed_plover-chick-cropped.jpeg/146px-Little_ringed_plover-chick-cropped.jpeg" decoding="async" width="146" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Little_ringed_plover-chick-cropped.jpeg/218px-Little_ringed_plover-chick-cropped.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/14/Little_ringed_plover-chick-cropped.jpeg/291px-Little_ringed_plover-chick-cropped.jpeg 2x" data-file-width="416" data-file-height="514" /></a></div> <div class="gallerytext"><a href="/wiki/Little_ringed_plover" title="Little ringed plover">Little ringed plover</a> chick, with a conspicuous <a href="#orbital_ring">orbital ring</a></div> </li> <li class="gallerybox" style="width: 185px"> <div class="thumb" style="width: 180px; height: 210px;"><a href="/wiki/File:White-eared_Sibia-Taiwan-cropped-eyestripe.jpeg" class="mw-file-description" title="White-eared sibia, with a conspicuous eyestripe"><img alt="White-eared sibia, with a conspicuous eyestripe" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/White-eared_Sibia-Taiwan-cropped-eyestripe.jpeg/77px-White-eared_Sibia-Taiwan-cropped-eyestripe.jpeg" decoding="async" width="77" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/White-eared_Sibia-Taiwan-cropped-eyestripe.jpeg/116px-White-eared_Sibia-Taiwan-cropped-eyestripe.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e0/White-eared_Sibia-Taiwan-cropped-eyestripe.jpeg/155px-White-eared_Sibia-Taiwan-cropped-eyestripe.jpeg 2x" data-file-width="372" data-file-height="863" /></a></div> <div class="gallerytext"><a href="/wiki/White-eared_sibia" title="White-eared sibia">White-eared sibia</a>, with a conspicuous <a href="#eyestripe">eyestripe</a></div> </li> <li class="gallerybox" style="width: 185px"> <div class="thumb" style="width: 180px; height: 210px;"><a href="/wiki/File:Saxicola_rubetra_-Belgium_-male-8-cropped.jpeg" class="mw-file-description" title="Whinchat, with a conspicuous supercilium (eyebrow)"><img alt="Whinchat, with a conspicuous supercilium (eyebrow)" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Saxicola_rubetra_-Belgium_-male-8-cropped.jpeg/150px-Saxicola_rubetra_-Belgium_-male-8-cropped.jpeg" decoding="async" width="150" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Saxicola_rubetra_-Belgium_-male-8-cropped.jpeg/225px-Saxicola_rubetra_-Belgium_-male-8-cropped.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Saxicola_rubetra_-Belgium_-male-8-cropped.jpeg/300px-Saxicola_rubetra_-Belgium_-male-8-cropped.jpeg 2x" data-file-width="1124" data-file-height="1248" /></a></div> <div class="gallerytext"><a href="/wiki/Whinchat" title="Whinchat">Whinchat</a>, with a conspicuous <a href="#supercilium">supercilium</a> (eyebrow)</div> </li> </ul></div></div></div> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="F">F</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=6" title="Edit section: F">edit</a>]</div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Types_de_plumes._-_Larousse_pour_tous,_-1907-1910-.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/80/Types_de_plumes._-_Larousse_pour_tous%2C_-1907-1910-.jpg/250px-Types_de_plumes._-_Larousse_pour_tous%2C_-1907-1910-.jpg" decoding="async" width="250" height="372" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/80/Types_de_plumes._-_Larousse_pour_tous%2C_-1907-1910-.jpg/375px-Types_de_plumes._-_Larousse_pour_tous%2C_-1907-1910-.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/80/Types_de_plumes._-_Larousse_pour_tous%2C_-1907-1910-.jpg/500px-Types_de_plumes._-_Larousse_pour_tous%2C_-1907-1910-.jpg 2x" data-file-width="1360" data-file-height="2024" /></a><figcaption><a href="#feather">Feather</a> variations</figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="feather"><dfn>feather </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Feather" title="Feather">Feather</a></div> <dd><a href="/wiki/Epidermis_(zoology)" title="Epidermis (zoology)">Epidermal</a> growths that form the distinctive outer covering, or <a href="/wiki/Plumage" title="Plumage">plumage</a>, on <a href="/wiki/Birds" class="mw-redirect" title="Birds">birds</a>. They are considered the most complex <a href="/wiki/Integumentary_system" title="Integumentary system">integumentary</a> structures found in vertebrates,<a href="#cite_note-Prum2002-188">[185]</a><a href="#cite_note-Prum2003-189">[186]</a> and, indeed, a premier example of a complex <a href="/wiki/Evolutionary_developmental_biology#The_origins_of_novelty" title="Evolutionary developmental biology">evolutionary novelty</a>.<a href="#cite_note-Prum1999-190">[187]</a> Feathers are among the characteristics that distinguish the extant birds from other living groups.<a href="#cite_note-iridescence-191">[188]</a> Although feathers cover most parts of the body of birds, they arise only from certain well-defined <a href="#pterylosis">tracts</a> on the skin. They aid in flight, thermal insulation and waterproofing, with their colouration helping in communication and <a href="/wiki/Crypsis" title="Crypsis">protection</a>.<a href="#cite_note-Pettingill29-192">[189]</a> Although there are many subdivisions of feathers, at the broadest levels, feathers are either classified as i) <a href="#vaned_feathers">vaned feathers</a>, which cover the exterior of the body and include <a href="#pennaceous_feathers">pennaceous feathers</a>, or ii) <a href="#down_feathers">down feathers</a>, which grow underneath the vaned feathers. A third rarer type of feather, the <a href="#filoplume">filoplume</a>, is hairlike and (if present in a bird; they are entirely absent in <a href="/wiki/Ratites" class="mw-redirect" title="Ratites">ratites</a><a href="#cite_note-Chandler285-193">[190]</a>) grows alongside the contour feathers.<a href="#cite_note-Prum2002-188">[185]</a> A typical vaned feather features a main shaft called the <a href="#quill">quill</a> with an upper section called the <a href="#rachis">rachis</a>. Fused to the rachis are a series of branches, or <a href="#barbs">barbs</a>; the barbs in turn have <a href="#barbules">barbules</a> branching off them, and they in turn branch yet again with a series of growths called <a href="#barbicels">barbicels</a>, some of which have minute hooks called <a href="#hooklets">hooklets</a> for cross-attachment. Down feathers are fluffy because they lack barbicels, so the barbules float free of each other, allowing the down to trap air and provide excellent thermal insulation. At the base of the feather, the rachis expands to form the hollow tubular <a href="#calamus">calamus</a> which inserts into a <a href="/wiki/Hair_follicle" title="Hair follicle">follicle</a> in the <a href="/wiki/Skin" title="Skin">skin</a>. The basal part of the calamus is without vanes. This part is embedded within the skin follicle and has an opening at the base (<a href="#proximal_umbilicus">proximal umbilicus</a>) and a small opening on the side (<a href="#distal_umbilicus">distal umbilicus</a>).<a href="#cite_note-atlas-194">[191]</a></dd> <dt id="feather_pecking"><dfn>feather pecking </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Feather_pecking" title="Feather pecking">Feather pecking</a></div> <dd>A behavioural problem in which one bird repeatedly pecks at the feathers of another, that occurs most frequently amongst <a href="/wiki/Chicken" title="Chicken">domestic hens</a> reared for egg production,<a href="#cite_note-195">[192]</a><a href="#cite_note-196">[193]</a> although it is seen in other <a href="/wiki/Poultry" title="Poultry">poultry</a> such as <a href="/wiki/Pheasant" title="Pheasant">pheasants</a>,<a href="#cite_note-197">[194]</a> <a href="/wiki/Domestic_turkey" title="Domestic turkey">turkeys</a>,<a href="#cite_note-198">[195]</a> <a href="/wiki/Domestic_duck" title="Domestic duck">ducks</a><a href="#cite_note-199">[196]</a> and sometimes in farmed <a href="/wiki/Ostrich" title="Ostrich">ostriches</a>.<a href="#cite_note-200">[197]</a> Two levels of severity are recognised: "gentle" and "severe".<a href="#cite_note-201">[198]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Ara_militaris.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Ara_militaris.jpg/220px-Ara_militaris.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Ara_militaris.jpg/330px-Ara_militaris.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/70/Ara_militaris.jpg/440px-Ara_militaris.jpg 2x" data-file-width="2048" data-file-height="1536" /></a><figcaption>The <a href="/wiki/Military_macaw" title="Military macaw">military macaw</a> on the left is displaying signs of <a href="#feather-plucking">feather-plucking</a>.</figcaption></figure> <dt id="feather-plucking"><dfn>feather-plucking </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Feather-plucking" title="Feather-plucking">Feather-plucking</a></div> <dd>Also feather-picking, feather damaging behaviour or pterotillomania.<a href="#cite_note-Lumeij_and_Hommers,_2008-202">[199]</a> A <a href="/wiki/Adaptive_behavior" title="Adaptive behavior">maladaptive</a>, behavioural disorder commonly seen in captive birds which chew, bite or pluck their own feathers with their beak, resulting in damage to the feathers and occasionally the skin.<a href="#cite_note-203">[200]</a><a href="#cite_note-204">[201]</a> It is especially common among <a href="/wiki/Parrots" class="mw-redirect" title="Parrots">Psittaciformes</a>, with an estimated 10% of captive parrots exhibiting the disorder.<a href="#cite_note-van_Zeeland_et_al._2009-205">[202]</a> The chief areas of the body that are pecked or plucked are the more accessible regions such as the neck, chest, <a href="#flank">flank</a>, inner thigh and <a href="/wiki/Anatomical_terms_of_location#Dorsal_and_ventral" title="Anatomical terms of location">ventral</a> wing area. <a href="#contour">Contour</a> and <a href="#down_feathers">down feathers</a> are generally identified as the main targets, although in some cases, <a href="#tail">tail</a> and <a href="#flight_feathers">flight feathers</a> are affected. Although feather-plucking shares characteristics with <a href="#feather_pecking">feather pecking</a>, commonly seen in commercial poultry, the two behaviours are currently considered to be distinct, as in the latter, the birds peck at and pull out the feathers of other individuals.</dd> <dt id="feather_tract"><dfn>feather tract</dfn></dt> <dd>See: <a href="#pterylae">pterylae</a>.</dd> <dt id="fecal_sac"><dfn>fecal sac </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Fecal_sac" title="Fecal sac">Fecal sac</a></div> <dd>Also, faecal sac. A mucous membrane, generally white or clear with a dark end,<a href="#cite_note-206">[203]</a> that surrounds the <a href="/wiki/Feces" title="Feces">feces</a> of some species of <a href="#nestling">nestling</a> birds,<a href="#cite_note-Sibley78-207">[204]</a> and allows parent birds to more easily remove <a href="/wiki/Feces" title="Feces">fecal material</a> from the <a href="/wiki/Bird_nest" title="Bird nest">nest</a>. The nestling usually produces a fecal sac within seconds of being fed; if not, a waiting adult may prod around the youngster's <a href="/wiki/Cloaca" title="Cloaca">cloaca</a> to stimulate <a href="/wiki/Excretion" title="Excretion">excretion</a>.<a href="#cite_note-Campbell433-208">[205]</a> Young birds of some species adopt specific postures or engage in specific behaviours to signal that they are producing fecal sacs.<a href="#cite_note-OConnor-209">[206]</a> For example, nestling <a href="/wiki/Curve-billed_thrasher" title="Curve-billed thrasher">curve-billed thrashers</a> raise their posteriors in the air, while young <a href="/wiki/Cactus_wren" title="Cactus wren">cactus wrens</a> shake their bodies.<a href="#cite_note-210">[207]</a> Other species deposit the sacs on the rim of the nest, where they are likely to be seen (and removed) by parent birds.<a href="#cite_note-OConnor-209">[206]</a> Not all species generate fecal sacs. They are most prevalent in <a href="#passerines">passerines</a> and their near relatives, which have young that remain in the nest for longer periods.<a href="#cite_note-Campbell433-208">[205]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Goose_filoplume_illustration-1895.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Goose_filoplume_illustration-1895.jpg/140px-Goose_filoplume_illustration-1895.jpg" decoding="async" width="140" height="302" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Goose_filoplume_illustration-1895.jpg/210px-Goose_filoplume_illustration-1895.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7b/Goose_filoplume_illustration-1895.jpg/280px-Goose_filoplume_illustration-1895.jpg 2x" data-file-width="404" data-file-height="871" /></a><figcaption>Illustration of a goose <a href="#filoplume">filoplume</a> feather, from The Structure and Life of Birds (1895).</figcaption></figure> <dt id="filoplume"><dfn>filoplume </dfn></dt> <dd>Also, filoplume feather; hair feather, thread feather. A hairlike type of feather that, if present in a bird (they are entirely absent in <a href="/wiki/Ratites" class="mw-redirect" title="Ratites">ratites</a><a href="#cite_note-Chandler285-193">[190]</a>) grows alongside the contour feathers.<a href="#cite_note-Prum2002-188">[185]</a> The typical filoplume is silky in appearance, lacks pith and a <a href="#superior_umbilicous">superior umbilicous</a> opening, has a very slender, straight shaft lacking differentiation into <a href="#calamus">calamus</a> and <a href="#rachis">rachis</a>, and is naked or has only a few <a href="#barbs">barbs</a> (that lack cross-attachment) at the distal end. They are closely associated with <a href="#contour_feathers">contour feathers</a> and often entirely hidden by them, with one or two filoplumes attached and sprouting from near the same point of the skin as each contour feather, at least on a bird's head, neck and trunk.<a href="#cite_note-Nitzsch1867-211">[208]</a><a href="#cite_note-Chandler261-212">[209]</a> Filoplume feathers host a cluster of sensory corpuscles at their base,<a href="#cite_note-Proctor96-213">[210]</a> that serve to detect air currents that affect contour and flight feathers.<a href="#cite_note-Stettenheim-95">[92]</a> Filoplumes are one of the three major classes of feathers, the others being <a href="#pennaceous">pennaceous</a> and <a href="#plumulaceous">plumulaceous</a> feathers.</dd> <dt id="flange"><dfn>flange </dfn></dt> <dd>Also, recurved margin. "The thickened dorsal edge of the bases of pennaceous <a href="#barbules">barbules</a>, generally recurved in proximal barbules, and frequently so in distal barbules also"<a href="#cite_note-Chandler253-214">[211]</a> which anchor the <a href="#hooklets">hooklets</a>.<a href="#cite_note-Pettingill32-33-31">[29]</a> (See <a href="/wiki/File:The_Interlocking_of_feathers.png" title="File:The Interlocking of feathers.png">diagram</a>; refer to figures 3 [in which the flange is referred to as the "folded edge"] and 6 [in which the mechanism of interlocking between a flange and <a href="#hooklet">hooklet</a> is shown].)</dd> <dt id="flanks"><dfn>flanks </dfn></dt> <dd>The <a href="#topography">topographical</a> region of the <a href="#underparts">underparts</a><a href="#cite_note-215">[d]</a> sketched "between the posterior half of the abdomen and the <a href="#rump">rump</a>".<a href="#cite_note-Pettingill9-99">[96]</a></dd> <dt id="fledge"><dfn>fledge </dfn></dt> <dd>Also, fledging. The stage in a young bird's life when the feathers and wing muscles are sufficiently developed for flight, or describing the act of a chick's parents in raising it to that time threshold.<a href="#cite_note-Eastman2000-216">[212]</a></dd> <dt id="fledgling"><dfn>fledgling </dfn></dt> <dd>A juvenile bird during the period it is venturing from or has left the <a href="#nest">nest</a> and is learning to run and fly; a young bird during the period immediately after <a href="#fledging">fledging</a>, when it is still dependent upon parental care and feeding.<a href="#cite_note-Stiteler2013-217">[213]</a></dd> <dt id="flight"><dfn>flight </dfn></dt> <dd>Most birds can <a href="/wiki/Flying_and_gliding_animals" title="Flying and gliding animals">fly</a>, which distinguishes them from almost all other vertebrate classes (cf. <a href="/wiki/Bats" class="mw-redirect" title="Bats">bats</a> and <a href="/wiki/Pterosaur" title="Pterosaur">pterosaurs</a>). Flight is the primary means of locomotion for most bird species and is used for breeding, feeding and predator avoidance and escape. Birds have various adaptations for flight, including a lightweight skeleton, two large flight muscles, the pectoralis (which accounts for 15% of the total mass of the bird) and the supracoracoideus, as well as modified forelimbs (<a href="/wiki/Wing" title="Wing">wings</a>) that serve as <a href="/wiki/Airfoil" title="Airfoil">aerofoils</a>.<a href="#cite_note-Gillvarious-218">[214]</a> Wing shape and size generally determine a bird species' type of flight; many birds combine powered, flapping flight with less energy-intensive soaring flight. About 60 extant bird species are <a href="/wiki/Flightless_bird" title="Flightless bird">flightless</a>, as were many extinct birds.<a href="#cite_note-Rootsvarious-219">[215]</a> Flightlessness often arises in birds on isolated islands, probably due to limited resources and the absence of land predators.<a href="#cite_note-220">[216]</a> Though flightless, penguins use similar musculature and movements to "fly" through the water, as do <a href="/wiki/Auk" title="Auk">auks</a>, <a href="/wiki/Shearwater" title="Shearwater">shearwaters</a> and <a href="/wiki/Dipper" title="Dipper">dippers</a>.<a href="#cite_note-221">[217]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Parts_of_feather_modified.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/41/Parts_of_feather_modified.jpg/180px-Parts_of_feather_modified.jpg" decoding="async" width="180" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/41/Parts_of_feather_modified.jpg/270px-Parts_of_feather_modified.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/41/Parts_of_feather_modified.jpg/360px-Parts_of_feather_modified.jpg 2x" data-file-width="599" data-file-height="600" /></a><figcaption>Parts of a feather: <div><ol><li><a href="#vane">vane</a></li><li><a href="#rachis">rachis</a></li><li><a href="#barb">barb</a></li><li><a href="#afterfeather">afterfeather</a></li><li><a href="#calamus">calamus</a></li></ol></div></figcaption></figure> <dt id="flight_feather"><dfn>flight feather </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather" title="Flight feather">Flight feather</a></div> <dd>Also, Pennae volatus.<a href="#cite_note-HAA-222">[218]</a> The long, stiff, asymmetrically shaped, but symmetrically paired <a href="/wiki/Pennaceous_feather" title="Pennaceous feather">pennaceous feathers</a> on the tail or <a href="/wiki/Wing" title="Wing">wings</a> of a bird; those on the tail are called <a href="#rectrices">rectrices</a> (singular: <a href="#rectrix">rectrix</a>), while those on the wings are called <a href="#remiges">remiges</a> (singular: <a href="#remex">remex</a>). Based on their location, remiges are subdivided into <a href="#primaries">primaries</a>, <a href="#secondaries">secondaries</a> and <a href="#tertiaries">tertiaries</a>.<a href="#cite_note-223">[219]</a></dd> <dt id="foot_paddling"><dfn>foot paddling </dfn></dt> <dd>A foraging behaviour of gulls in which individuals stand at a location, often in shallow water, and perform rapid stepping actions that are thought to make subterranean worms or other food rise to the surface.<a href="#cite_note-224">[220]</a></dd> <dt id="forehead"><dfn>forehead</dfn></dt> <dd>The portion of a bird's head extending "up and back from the <a href="#bill">bill</a> to an imaginary line joining the anterior corners of the eyes".<a href="#cite_note-Pettingill10-136">[133]</a></dd> <dt id="fovea"><dfn>fovea </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Fovea_centralis" title="Fovea centralis">Fovea centralis</a></div> <dd>Plural: foveas or foveae. A small cavity in the <a href="/wiki/Retina" title="Retina">retina</a> of the eye that hosts a large number of light receptors; more than anywhere else on the retina. About one half of bird species with fovea have a single one, but uniquely in birds,<a href="#cite_note-225">[221]</a> some, such as <a href="/wiki/Tern" title="Tern">terns</a>, <a href="/wiki/Kingfisher" title="Kingfisher">kingfishers</a> and <a href="/wiki/Hummingbird" title="Hummingbird">hummingbirds</a>, have a second fovea,<a href="#cite_note-Holden2016-226">[222]</a> called the temporal fovea, that assists in judging speed and distance and increases visual acuity. Birds that do not have a second fovea will sometimes bob their head to improve their visual field.<a href="#cite_note-227">[223]</a></dd> <dt id="friction_barbules"><dfn>friction barbules </dfn></dt> <dd>A specialized type of <a href="#barbule">barbule</a> located on the distal part of the inner <a href="#vane">vane</a> of <a href="#primary_feathers">primary feathers</a> on the wings of most flighted birds. Friction barbules support lobe-shaped ("lobular") <a href="#barbicels">barbicels</a> that are broader than the typical barbicel hosted by other vaned feathers, and which in turn support more <a href="#hooklets">hooklets</a>. The theory is that the augmented surface area and other adaptations significantly increases grip through <a href="/wiki/Friction" title="Friction">friction</a> when the outer web of barbs of one primary feather come into contact and rub against the inner web of barbs of another primary feather it overlays, thereby preventing slippage during the rigors of flight.<a href="#cite_note-Gill84-228">[224]</a><a href="#cite_note-229">[225]</a> Friction barbules are found only on those parts of primary feathers that are in "zones of overlap" with neighboring primaries. The theory (and the use of "friction" in the title of the defined phrase) has been criticized. In Avian Flight (2005), the author notes that "most birds open and close their wings during every wing beat cycle", and proposes that the energetic cost to overcome friction during the "wing extension and flexion" of each beat cycle would be prohibitive. Offered instead is the theory that the function of these specialized barbules is to lock the primary feathers together on the wings' downstroke, during which high <a href="/wiki/Pressure" title="Pressure">pressure</a> from below the wings' surface would otherwise tend to cause the feathers to spread.<a href="#cite_note-Videler2006-230">[226]</a></dd> <dt id="frontal_shield"><dfn>frontal shield </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Frontal_shield" title="Frontal shield">Frontal shield</a></div> <dd>Also facial shield; face shield; frontal plate. A hard or fleshy plate extending from the base of the <a href="#upper_mandible">upper mandible</a> over the <a href="#forehead">forehead</a> of several bird species including some <a href="/wiki/Water_bird" title="Water bird">water birds</a> in the <a href="/wiki/Rallidae" class="mw-redirect" title="Rallidae">rail family</a>, especially the <a href="/wiki/Moorhen" title="Moorhen">gallinules and moorhens</a>, <a href="/wiki/Swamphen" title="Swamphen">swamphens</a> and <a href="/wiki/Coot" title="Coot">coots</a>, as well as in <a href="/wiki/Jacanidae" title="Jacanidae">jacana</a>.<a href="#cite_note-Campbell533-231">[227]</a> While most face shields are made up of fatty tissues, some birds, such as certain <a href="/wiki/Turaco" title="Turaco">turacos</a>, e.g., the <a href="/wiki/Red-crested_turaco" title="Red-crested turaco">red-crested turaco</a>, have face shields that are hard extensions of the mandible.<a href="#cite_note-Grouw2013-232">[228]</a> The size, shape and colour may exhibit <a href="/wiki/Testosterone" title="Testosterone">testosterone</a>-dependent variation in either sex during the year.<a href="#cite_note-233">[229]</a> Functionality appears to relate to protection of the face while feeding in or moving through dense vegetation, as well as to <a href="/wiki/Courtship_display" title="Courtship display">courtship display</a> and <a href="/wiki/Territory_(animal)" title="Territory (animal)">territorial</a> defence.<a href="#cite_note-234">[230]</a> Compare: <a href="#casque">casque</a>.</dd> <dt id="furcula"><dfn>furcula </dfn></dt> <dd>Also, wishbone; merry-thought. From the Latin for "little fork", the furcula is a forked <a href="/wiki/Bone" title="Bone">bone</a>, also found in some dinosaurs, located below the neck and formed by the fusion of the two <a href="/wiki/Clavicle" title="Clavicle">clavicles</a>. Its primary function is in the strengthening of the <a href="/wiki/Thorax" title="Thorax">thoracic</a> skeleton to withstand the rigors of <a href="/wiki/Flight" title="Flight">flight</a>. It works as a strut between a bird's shoulders, and articulates to each of a bird's <a href="/wiki/Scapulae" class="mw-redirect" title="Scapulae">scapulae</a>. In conjunction with the <a href="/wiki/Coracoid" title="Coracoid">coracoid</a> and the scapula, it forms a unique structure called the triosseal canal, which houses a strong tendon that connects the <a href="/wiki/Bird_anatomy#Muscular_system" title="Bird anatomy">supracoracoideus</a> muscles to the <a href="/wiki/Humerus" title="Humerus">humerus</a>. This system is responsible for lifting the wings during a recovery stroke. As the thorax is compressed by the flight muscles during a downstroke, the upper ends of the furcula spread apart, expanding by as much as 50% of its resting width, and then contract. Furcula may also aid in <a href="/wiki/Respiratory_system" title="Respiratory system">respiration</a>, by helping to pump air through the <a href="/wiki/Bird_anatomy#Respiratory_system" title="Bird anatomy">air sacs</a>.<a href="#cite_note-Gill134-136-235">[231]</a><a href="#cite_note-236">[232]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="G">G</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=7" title="Edit section: G">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:House_sparrow_portrait.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/67/House_sparrow_portrait.jpg/220px-House_sparrow_portrait.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/67/House_sparrow_portrait.jpg/330px-House_sparrow_portrait.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/67/House_sparrow_portrait.jpg/440px-House_sparrow_portrait.jpg 2x" data-file-width="1800" data-file-height="1200" /></a><figcaption>The <a href="#gape_flange">gape flange</a> on this juvenile <a href="/wiki/House_sparrow" title="House sparrow">house sparrow</a> is the yellowish region at the base of the beak.</figcaption></figure> <dt id="gape"><dfn>gape </dfn></dt> <dd>The interior of the open mouth of a bird.<a href="#cite_note-Newman-237">[233]</a> The width of the gape can be a factor in the choice of food.<a href="#cite_note-238">[234]</a></dd> <dt id="gape_flange"><dfn>gape flange </dfn></dt> <dd>The region where the <a href="#upper_mandible">upper</a> and <a href="#lower_mandible">lower</a> mandibles join together at the base of the <a href="#beak">beak</a>.<a href="#cite_note-Newman-237">[233]</a> When born, the chick's gape flanges are fleshy. As it grows into a <a href="#fledgling">fledgling</a>, the gape flanges remain somewhat swollen and can thus be used to recognize that a particular bird is young.<a href="#cite_note-239">[235]</a> Gape flanges can serve as a target for food for parents, and when touched, stimulate the nestling to open its mouth to eat.<a href="#cite_note-240">[236]</a></dd> <dt id="gizzard"><dfn>gizzard </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Gizzard" title="Gizzard">Gizzard</a></div> <dd>Also, ventriculus; gastric mill; gigerium. A specialized <a href="/wiki/Stomach" title="Stomach">stomach</a> organ found in the digestive tract of some birds constructed of thick muscular walls that is used for grinding up food, often aided by particles of stone or grit. Food, after going through the <a href="#crop">crop</a> and <a href="#proventriculus">proventriculus</a>, passes into the gizzard where it can be ground with previously swallowed stones and passed back to the proventriculus, and vice versa. Bird gizzards are lined with a tough layer made of a carbohydrate-protein complex called koilin, that protects the muscles in the gizzard.<a href="#cite_note-Pettingill77-241">[237]</a><a href="#cite_note-Nyakupfuka2013-242">[238]</a></dd> <dt id="gleaning"><dfn>gleaning </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Gleaning_(birds)" title="Gleaning (birds)">Gleaning (birds)</a></div> <dd>Specialized cases: foliage gleaning; hover-gleaning; crevice-gleaning. The strategy of gleaning over surfaces by birds to catch invertebrate prey—chiefly <a href="/wiki/Insect" title="Insect">insects</a> and other <a href="/wiki/Arthropod" title="Arthropod">arthropods</a>—by plucking them from foliage or the ground, from crevices such as of rock faces and under the eaves of houses, or even, as in the case of ticks and lice, from living animals. Gleaning the leaves and branches of trees and shrubs is called "foliage gleaning", which can involve a variety of styles and maneuvers. Some birds, such as the <a href="/wiki/Common_chiffchaff" title="Common chiffchaff">common chiffchaff</a><a href="#cite_note-243">[239]</a> of <a href="/wiki/Palearctic_realm" title="Palearctic realm">Eurasia</a> and the <a href="/wiki/Wilson%27s_warbler" title="Wilson's warbler">Wilson's warbler</a> of <a href="/wiki/Nearctic_realm" title="Nearctic realm">North America</a>, feed actively and appear energetic. Some will even hover in the air near a twig while gleaning from it; this behaviour is called "hover-gleaning". Other birds are more methodical in their approach to gleaning, even seeming lethargic as they perch upon and deliberately pick over foliage. This behaviour is characteristic of the <a href="/wiki/Bay-breasted_warbler" title="Bay-breasted warbler">bay-breasted warbler</a><a href="#cite_note-Dunn-244">[240]</a> and many <a href="/wiki/Vireo" title="Vireo">vireos</a>. Another tactic is to hang upside-down from the tips of branches to glean the undersides of leaves. Tits such as the familiar <a href="/wiki/Black-capped_chickadee" title="Black-capped chickadee">black-capped chickadee</a> are often observed feeding in this manner. Some birds, like the <a href="/wiki/Ruby-crowned_kinglet" title="Ruby-crowned kinglet">ruby-crowned kinglet</a>, use a combination of these tactics. "Crevice-gleaning" is a niche particular to dry and rocky habitats. Gleaning birds are typically small with compact bodies and have small, sharply pointed <a href="#beaks">beaks</a>. Birds often specialize in a particular niche, such as a particular stratum of forest or type of vegetation.<a href="#cite_note-245">[241]</a></dd> <dt id="gnathotheca"><dfn>gnathotheca</dfn></dt> <dd>The <a href="#rhamphotheca">rhamphotheca</a> (thin horny sheath of <a href="/wiki/Keratin" title="Keratin">keratin</a>) covering the <a href="#lower_mandible">lower mandible</a>.<a href="#cite_note-Proctor66-36">[33]</a><a href="#cite_note-Gill148-37">[34]</a><a href="#cite_note-Campbell47-38">[35]</a></dd> <dt id="gonys"><dfn>gonys</dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Gonys" title="Beak">Beak § Gonys</a></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="#gonydeal_angle">§ gonydeal angle</a>, and <a href="#gonydeal_spot">§ gonydeal spot</a></div> <dd>The <a href="/wiki/Ventral" class="mw-redirect" title="Ventral">ventral</a> ridge of the <a href="#lower_mandible">lower mandible</a>, created by the junction of the bone's two rami, or lateral plates.<a href="#cite_note-Campbell254-246">[242]</a></dd> <dt id="gonydeal_angle"><dfn>gonydeal angle </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Gonys" title="Beak">Beak § Gonys</a></div> <dd>Also, gonydeal expansion. The proximal end of the junction created by the <a href="#gonys">gonys</a> two rami, or lateral plates—the place where the two plates separate. The size and shape of the gonydeal angle can be useful in identifying between otherwise similar species.<a href="#cite_note-Howell23-43">[40]</a></dd> <dt id="gonydeal_spot"><dfn>gonydeal spot </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Gonys" title="Beak">Beak § Gonys</a></div> <dd>The spot near the gonydeal expansion, in adults of many bird species but especially in gulls, usually reddish or orangish in colour, that triggers <a href="/wiki/Begging_behavior_in_animals" class="mw-redirect" title="Begging behavior in animals">begging behaviour</a>. Gull chicks, for example, peck at the spot on its parent's bill, which in turn stimulates the parent to <a href="#regurgitate">regurgitate</a> food.<a href="#cite_note-Howell23-43">[40]</a><a href="#cite_note-247">[243]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Costa%27s_hummingbird_(Calypte_costae)-cropped.jpeg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Costa%27s_hummingbird_%28Calypte_costae%29-cropped.jpeg/180px-Costa%27s_hummingbird_%28Calypte_costae%29-cropped.jpeg" decoding="async" width="180" height="206" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Costa%27s_hummingbird_%28Calypte_costae%29-cropped.jpeg/270px-Costa%27s_hummingbird_%28Calypte_costae%29-cropped.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Costa%27s_hummingbird_%28Calypte_costae%29-cropped.jpeg/360px-Costa%27s_hummingbird_%28Calypte_costae%29-cropped.jpeg 2x" data-file-width="500" data-file-height="571" /></a><figcaption>Male Costa's hummingbird (Calypte costae) with an iridescent <a href="#gorget">gorget</a></figcaption></figure> <dt id="gorget"><dfn>gorget </dfn></dt> <dd>A patch of coloured <a href="/wiki/Feather" title="Feather">feathers</a> found on the throat or upper breast of some species of <a href="/wiki/Bird" title="Bird">birds</a>.<a href="#cite_note-Campbell254-246">[242]</a> It is a feature found on many male <a href="/wiki/Hummingbird" title="Hummingbird">hummingbirds</a>, particularly those found in North America, whose gorgets are typically <a href="/wiki/Iridescent" class="mw-redirect" title="Iridescent">iridescent</a>.<a href="#cite_note-248">[244]</a> Other species having gorgets include the <a href="/wiki/Purple-throated_fruitcrow" title="Purple-throated fruitcrow">purple-throated fruitcrow</a><a href="#cite_note-249">[245]</a> and the <a href="/wiki/Chukar_partridge" title="Chukar partridge">chukar partridge</a>.<a href="#cite_note-250">[246]</a> The term is derived from the <a href="/wiki/Gorget" title="Gorget">gorget</a> used in military armor to protect the throat.<a href="#cite_note-251">[247]</a></dd> <dt id="grooming"><dfn>grooming</dfn></dt> <dd>See entry for <a href="#preening">preening</a>.</dd> <dt id="gular_region"><dfn>gular region </dfn></dt> <dd>The posterior part of the underside of a bird's head, described as "a continuation of the chin to an imaginary line drawn between the <a href="/wiki/Angle_of_the_mandible" title="Angle of the mandible">angles of the jaw</a>".<a href="#cite_note-Pettingill32-10">[8]</a> See also: <a href="#gular_skin">gular skin</a>.</dd> <dt id="gular_skin"><dfn>gular skin </dfn></dt> <dd>Also defined, gular sac / throat sac; gular pouch; gular flutter. Describes the <a href="#gular_region">gular region</a> when it is featherless. In many species, the gular skin forms a flap, or gular pouch, which is generally used to store fish and other prey while hunting. In many others, such as <a href="/wiki/Frigatebirds" class="mw-redirect" title="Frigatebirds">frigatebirds</a>, the gular skin may overlie a <a href="https://en.wiktionary.org/wiki/sac" class="extiw" title="wikt:sac">sac</a>—the gular sac or throat sac—that may be dramatically inflated by males during courtship display. In some species the gular region is used for thermoregulation, by the fluttering of the <a href="/wiki/Hyoid_bone" title="Hyoid bone">hyoid bone</a> and surrounding muscles, vibrating as many as 735 times per minute, which causes an increase in heat dissipation from the gular skin.<a href="#cite_note-MorrisPress1992-252">[248]</a><a href="#cite_note-DayRiepe2015-253">[249]</a><a href="#cite_note-Lederer2016-254">[250]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="H">H</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=8" title="Edit section: H">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="hallux"><dfn>hallux </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Bird_feet_and_legs#Toes_and_unfused_metatarsals" title="Bird feet and legs">Bird feet and legs § Toes and unfused metatarsals</a></div> <dd>Also, hind toe; first digit. Specialized types: incumbent and elevated. A bird's usually rear-facing toe; its hind toe. When it is attached near the base of the <a href="#tarsometatarsus">metatarsus</a> it is termed incumbent, and when projecting from a higher portion of the metatarsus (as in <a href="/wiki/Rail_(bird)" title="Rail (bird)">rails</a>), it is termed elevated. The hallux is a bird's first digit, in many birds being the sole rear-facing toe (including in most <a href="#passerine">passerine</a> species that have <a href="#anisodactylous">anisodactylous</a> feet) and is homologous to the human <a href="/wiki/Big_toe" class="mw-redirect" title="Big toe">big toe</a>.<a href="#cite_note-FOOTNOTELovetteFitzpatrick2016181-255">[251]</a><a href="#cite_note-256">[252]</a><a href="#cite_note-257">[253]</a></dd> <dt id="home_range"><dfn>home range </dfn></dt> <dd>Also defined: territory. The area of land in which a bird performs most of its activities. When the area is guarded (in whole or in part) from individuals of the same species it is called a territory.<a href="#cite_note-OdumKuenzler1955-258">[254]</a> These territories may be temporary or permanent, breeding or non-breeding. Breeding territories may be of four types: i) an all-purpose territory where all activities are conducted; ii) a separate breeding and feeding territory (or just a breeding territory, with foraging conducted outside of it); iii) a territory surrounding the nest and a very small area outside of it; iv) a small territory used solely for display within a <a href="#lek">lek</a>.<a href="#cite_note-Elphick135-136-259">[255]</a> The size of the home range can be affected by what food a bird eats and how much the bird weighs. Birds that weigh more usually have larger ranges, and <a href="#carnivores">carnivores</a> on average have larger ranges than non-carnivores.<a href="#cite_note-HarestadBunnel1979-260">[256]</a></dd> <dt id="humphrey–parkes_terminology"><dfn>Humphrey–Parkes terminology</dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Humphrey%E2%80%93Parkes_terminology" title="Humphrey–Parkes terminology">Humphrey–Parkes terminology</a></div> <dd>A system of <a href="/wiki/Nomenclature" title="Nomenclature">nomenclature</a> for the <a href="#plumage">plumage</a> of birds proposed in 1959 by Philip S. Humphrey and Kenneth C. Parkes<a href="#cite_note-Humphrey–Parks-12">[10]</a> to make the terminology for describing bird plumages more uniform.<a href="#cite_note-261">[257]</a> Examples of Humphrey–Parkes terminology versus traditional terminology may be seen in the entries for <a href="#prealternate_moult">prealternate moult</a> and <a href="#prebasic_moult">prebasic moult</a>.</dd> <dt id="hyoid_apparatus"><dfn>hyoid apparatus </dfn></dt> <dd>The system of bones to which the tongue is attached. It usually includes the tongue bone, to which the tongue is actually attached,<a href="#cite_note-Elphick25-6-262">[258]</a> the basihyal, behind the tongue bone, the urohyal, itself behind the basihyal, a pair of ceratobranchial bones, and a pair of epibranchial.<a href="#cite_note-JungNaleway2016-263">[259]</a> The latter two bones form the hyoid horns, which are contained in a pair of fascia vaginalis. This allows the tongue to slide out smoothly. The hyoid apparatus is attached to the larynx.<a href="#cite_note-Elphick25-6-262">[258]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="I">I</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=9" title="Edit section: I">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="in_pin"><dfn>in pin</dfn></dt><dd>See <a href="#pin_feather">#pin feather</a></dd> <dt id="inferior_umbilicus"><dfn>inferior umbilicus </dfn></dt> <dd>Also, proximal umbilicus. A small opening located at the bottom tip of a feather's shaft, i.e., at the base of the <a href="#calamus">calamus</a>, that is embedded within the skin of a bird. The growth of the feather is fed by the flow through the inferior umbilicus of a nutrient (or nutritive) pulp of highly vascular <a href="/wiki/Dermis" title="Dermis">dermal</a> cells (sometimes called the nutritive dermis; a part of what is termed the <a href="/wiki/Malpighian_layer" title="Malpighian layer">Malpighian layer</a>), that in turn produce a nourishing <a href="/wiki/Blood_plasma" title="Blood plasma">plasma</a>. In mature feathers the opening is sometimes sealed over by a <a href="/wiki/Keratin" title="Keratin">keratinous</a> plate.<a href="#cite_note-Pettingill29-192">[189]</a><a href="#cite_note-264">[260]</a><a href="#cite_note-265">[261]</a> Compare: <a href="#superior_umbilicus">superior umbilicus</a>.</dd> <dt id="inner_wing"><dfn>inner wing </dfn></dt> <dd>Also defined: outer wing. The inner wing of a bird is that portion of the wing stretching from its connection to the body and through the "wrist" joint. The outer wing stretches from the wrist to the wingtip.<a href="#cite_note-Scott43-266">[262]</a></dd> <dt id="iris"><dfn>iris </dfn></dt> <dd>The coloured outer ring that surrounds a bird's <a href="#pupil">pupil</a>. Though brown predominates, the iris may be of or include a variety of colours—red, yellow, grey, blue, etc.—and the colouration may vary according to the age, sex and species.<a href="#cite_note-Jasper-162">[159]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="J">J</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=10" title="Edit section: J">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="jizz"><dfn>jizz </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Jizz_(birding)" title="Jizz (birding)">Jizz (birding)</a></div> <dd>Also, gestalt,<a href="#cite_note-Zimmer2000-267">[263]</a> of which the term may be a corruption<a href="#cite_note-268">[264]</a> (or possibly deriving from the <a href="/wiki/Air_force" title="Air force">air force</a> acronym GISS for "General Impression of Size and Shape (of an aircraft)", associated with <a href="/wiki/World_War_II" title="World War II">World War II</a> lingo; though this derivation may by anachronistic as jizz was first used in birdwatching as early as 1922),<a href="#cite_note-269">[265]</a> it describes the overall impression or appearance of a <a href="/wiki/Bird" title="Bird">bird</a>—"the indefinable quality of a particular species, the 'vibe' it gives off"<a href="#cite_note-270">[266]</a>—garnered from such features as shape, posture, flying style or other habitual movements, size and colouration combined with voice, habitat and location.<a href="#cite_note-Madden2011-271">[267]</a><a href="#cite_note-Harrop2004-272">[268]</a><a href="#cite_note-Tyzack2013-273">[269]</a> Example use: "It had the jizz of a thrush, but I couldn't make out what kind."</dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="K">K</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=11" title="Edit section: K">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="keel"><dfn>keel </dfn></dt> <dd>Also, carina. An extension of the <a href="/wiki/Sternum" title="Sternum">sternum</a> (breastbone) which runs axially along the midline of the sternum and extends outward, perpendicular to the plane of the <a href="/wiki/Rib" title="Rib">ribs</a>. The keel provides an anchor to which a bird's wing muscles attach, thereby providing adequate <a href="/wiki/Lever" title="Lever">leverage</a> for <a href="#flight">flight</a>. Keels do not exist on all birds; in particular, some <a href="/wiki/Flightless_bird" title="Flightless bird">flightless birds</a> lack a keel structure. Historically, the presence or absence of a pronounced keel structure was used as a broad classification of birds into two orders: <a href="/wiki/Carinatae" title="Carinatae">Carinatae</a> (from Latin carina, 'keel'), having a pronounced keel; and <a href="/wiki/Ratite" title="Ratite">ratites</a> (from Latin ratis, 'raft'—referring to the flatness of the sternum), having a subtle keel structure or lacking one entirely. However, this classification has fallen into disuse as evolutionary studies have shown that many flightless birds have evolved from flighted birds.<a href="#cite_note-274">[270]</a><a href="#cite_note-275">[271]</a></dd> <dt id="kleptoparasitism"><dfn>kleptoparasitism </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Kleptoparasitism" title="Kleptoparasitism">Kleptoparasitism</a></div> <dd>A bird's propensity to steal food from other birds, either opportunistically, or on a regular basis.<a href="#cite_note-Elphick129-276">[272]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="L">L</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=12" title="Edit section: L">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="lateral_throat-stripe"><dfn>lateral throat-stripe </dfn></dt> <dd> A usually dark stripe of colour bordering the throat below both the <a href="#moustachial_stripe">moustachial stripe</a> and the <a href="#submoustachial_stripe">submoustachial stripe</a>, if any.<a href="#cite_note-Vinicombe15-29">[27]</a></dd> <dt id="lek"><dfn>lek </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Lek_mating" title="Lek mating">Lek mating</a></div> <dd>Also defined: lekking; dispersed lek. An aggregation of male birds gathered to engage in competitive displays (known as lekking) that may entice visiting females that are assessing prospective partners for copulation.<a href="#cite_note-Fiske-277">[273]</a> These males are usually in sight of each other, but when they are only in earshot, it is called a dispersed lek or an exploded lek. Mating usually occurs on the display area.<a href="#cite_note-Elphick151-278">[274]</a></dd> <dt id="lore"><dfn>lore </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Lore_(anatomy)" title="Lore (anatomy)">Lore (anatomy)</a></div> <dd>Adj. form: loreal. The <a href="#topography">topographical</a> region of a bird's head between the eye and the <a href="#beak">beak</a> on the sides of the head.<a href="#cite_note-Pettingill9-99">[96]</a></dd> <dt id="lower_mandible"><dfn>lower mandible</dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Mandibles" title="Beak">Beak § Mandibles</a></div> <dd>Also, mandible. The lower part of a bird's <a href="#bill">bill</a> or beak, roughly corresponding to the lower jaw of mammals, it is supported by a bone known as the inferior maxillary bone—a compound bone composed of two distinct ossified pieces. These ossified plates (or <a href="/wiki/Ramus_of_the_mandible" class="mw-redirect" title="Ramus of the mandible">rami</a>), which can be U-shaped or V-shaped,<a href="#cite_note-Coues-35">[32]</a> join distally (the exact location of the joint depends on the species) but are separated <a href="/wiki/Anatomical_terms_of_location#Proximal_and_distal" title="Anatomical terms of location">proximally</a>, attaching on either side of the head to the quadrate bone. The jaw muscles, which allow the bird to close its beak, attach to the proximal end of the lower mandible and to the bird's skull.<a href="#cite_note-Gill148-37">[34]</a> The muscles that depress the lower mandible are usually weak, except in a few birds such as the starlings (and the extinct <a href="/wiki/Huia" title="Huia">Huia</a>), which have well-developed <a href="/wiki/Digastric_muscle" title="Digastric muscle">digastric muscles</a> that aid in foraging by prying or gaping actions.<a href="#cite_note-279">[275]</a> In most birds, these muscles are relatively small as compared to the jaw muscles of similarly sized mammals.<a href="#cite_note-280">[276]</a> The outer surface is covered in thin horny sheath of <a href="/wiki/Keratin" title="Keratin">keratin</a> called <a href="#rhamphotheca">rhamphotheca</a>,<a href="#cite_note-Proctor66-36">[33]</a><a href="#cite_note-Gill148-37">[34]</a> specially called <a href="#gnathotheca">gnathotheca</a> in the lower mandible.<a href="#cite_note-Campbell47-38">[35]</a> Compare: <a href="#upper_mandible">upper mandible</a>.</dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="M">M</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=13" title="Edit section: M">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Preening_bird_(Unsplash).jpg" class="mw-file-description"><img alt="Bird with a wing outstretched, rearranging feathers with the tip of its bill" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Preening_bird_%28Unsplash%29.jpg/220px-Preening_bird_%28Unsplash%29.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Preening_bird_%28Unsplash%29.jpg/330px-Preening_bird_%28Unsplash%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/43/Preening_bird_%28Unsplash%29.jpg/440px-Preening_bird_%28Unsplash%29.jpg 2x" data-file-width="4065" data-file-height="2710" /></a><figcaption><a href="/wiki/Barn_Swallow" class="mw-redirect" title="Barn Swallow">Barn Swallow</a> <a href="#preening">preening</a>; one of many <a href="#maintenance_behaviours">maintenance behaviours</a></figcaption></figure> <dt id="maintenance_behaviour"><dfn>maintenance behaviour </dfn></dt> <dd>Also, comfort behaviour. The name given to any behaviour or activity which a bird uses to maintain its plumage and soft parts: <a href="#preening">preening</a>, bathing, <a href="#anting">anting</a>, sunbathing, stretching, scratching, and other such activities.<a href="#cite_note-281">[277]</a><a href="#cite_note-FOOTNOTECampbellLack1985101-282">[278]</a> Roosting is also often considered to be a comfort behaviour.<a href="#cite_note-FOOTNOTECampbellLack1985101–105-283">[279]</a> The phrase is sometimes used more inclusively, to describe all life-sustaining activities, such as feeding, drinking, predator avoidance, and locomotion,<a href="#cite_note-FOOTNOTESibley,_et_al.200155–59-284">[280]</a> and even involuntary biological processes, like <a href="#moulting">moulting</a>.<a href="#cite_note-Kricher2020-285">[281]</a></dd> <dt id="mandible"><dfn>mandible</dfn></dt> <dd>In birds, the word mandible, alone, usually refers to the <a href="#lower_mandible">lower mandible</a>.</dd> <dt id="mantle"><dfn>mantle</dfn></dt> <dd>The forward area of a bird's upper side sandwiched between the <a href="#hindneck">hindneck</a> and the start of the <a href="#back">back</a>. However, in <a href="/wiki/Gull" title="Gull">gulls</a> and <a href="/wiki/Tern" title="Tern">terns</a>, the term is often used to refer to much of the upper surface below the hindneck.<a href="#cite_note-Vinicombe15-29">[27]</a></dd> <dt id="migration"><dfn>migration </dfn></dt> <dd>Also defined: partial migration. The regular seasonal movement, often north and south, undertaken by many species of birds. Bird movements include those made in response to changes in food availability, habitat, or weather. Sometimes journeys are not termed "true migration" because they are irregular (nomadism, invasions, irruptions) or only in one direction (dispersal, movement of young away from natal areas). Migration is marked by its annual seasonality.<a href="#cite_note-Pettingill232–234-286">[282]</a><a href="#cite_note-Berthold-287">[283]</a> Non-migratory birds are said to be <a href="#resident">resident</a> or sedentary. Approximately 1,800 of the world's bird species are long-distance migrants.<a href="#cite_note-Seker-288">[284]</a><a href="#cite_note-Rolland-289">[285]</a> Many bird populations migrate long distances along a flyway. The most common pattern involves flying north in the northern spring to breed in the temperate or <a href="/wiki/Arctic" title="Arctic">Arctic</a> summer, and returning in the autumn to wintering grounds in warmer regions to the south. In the southern hemisphere the directions are reversed, but there is less land area in the far south to support long-distance migration.<a href="#cite_note-newton-290">[286]</a> Not all populations within a species may be migratory; this is known as "partial migration". Partial migration is very common in birds of the southern continents. For example, in Australia, 44% of non-passerine birds and 32% of <a href="#passerine">passerine</a> species are partially migratory.<a href="#cite_note-291">[287]</a> Many, if not most birds migrate in flocks. For larger birds, flying in flocks reduces the energy cost, e.g., <a href="/wiki/Geese" class="mw-redirect" title="Geese">geese</a> in a V-formation may conserve 12–20% of the energy they would otherwise need if flying alone.<a href="#cite_note-292">[288]</a><a href="#cite_note-293">[289]</a></dd> <dt id="morph"><dfn>morph </dfn></dt> <dd>Also, colour/color morph. <a href="/wiki/Polymorphism_(biology)" title="Polymorphism (biology)">Polymorphic</a> variance in the colouring of the plumage between individuals of the same species, unrelated to age, sex or season. For example, the <a href="/wiki/Snow_goose" title="Snow goose">snow goose</a> has two plumage morphs, white (snow) or grey/blue (blue), thus the common description of individuals as either "snows" or "blues". At one time this colour morph resulted in the "blue goose" being classified as a separate species.<a href="#cite_note-294">[290]</a><a href="#cite_note-BeedyPandolfino2013-295">[291]</a></dd> <dt id="moult"><dfn>moult </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main articles: <a href="/wiki/Moulting#In_birds" title="Moulting">Moulting § In birds</a>, and <a href="/wiki/Flight_feather#Moult" title="Flight feather">Flight feather § Moult</a></div> <dd>Also, molt (chiefly U.S.) and moulting / molting. The periodic replacement of <a href="/wiki/Feather" title="Feather">feathers</a> by shedding old feathers while producing new ones. Feathers are dead structures at maturity which are gradually abraded and need to be replaced. Adult birds moult at least once a year, although many moult twice and a few three times each year. It is generally a slow process, as birds rarely shed all their feathers at any one time; the bird must retain sufficient feathers to regulate its <a href="/wiki/Thermoregulation" title="Thermoregulation">body temperature</a> and repel moisture. The number and area of feathers that are shed varies. In some moulting periods, a bird may renew only the feathers on the head and body, shedding the wing and tail feathers during a later moulting period. Some species of bird become flightless during an annual "wing moult" and must seek a protected habitat with a reliable food supply during that time. Typically, a bird begins to shed some old feathers, then <a href="/wiki/Pin_feathers" class="mw-redirect" title="Pin feathers">pin feathers</a> grow in to replace the old feathers. As the pin feathers become full feathers, other feathers are shed. This is a cyclical process that occurs in many phases. It is usually <a href="/wiki/Symmetrical" class="mw-redirect" title="Symmetrical">symmetrical</a>, with feather loss equal on each side of the body. Because feathers make up 4–12% of a bird's body weight, it takes a large amount of energy to replace them. For this reason, moults often occur immediately after the breeding season, but while food is still abundant. The plumage produced during this time is called <a href="#postnuptial_plumage">postnuptial plumage</a>.<a href="#cite_note-Terres616-617-296">[292]</a></dd> <dt id="moult_strategy"><dfn>moult strategy </dfn></dt> <dd>Specialized types defined: simple basic strategy; simple alternate strategy; complex basic strategy; complex alternate strategy. The pattern of <a href="#moults">moults</a> that occurs regularly based on the season and time. There are four main moulting strategies: i) simple basic strategy, in which there is one moult per year, every year; ii) simple alternate strategy, in which there are two moults per year, every year; iii) complex basic strategy, in which there is one moult per year, except in the first year of life, where there is an additional moult; and iv) complex alternate strategy, in which there are two moults per year, except in the first year of life, where there is an additional moult.<a href="#cite_note-297">[293]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:New_Zealand_Pipit_Kapiti-Moustachial_stripe.jpeg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/New_Zealand_Pipit_Kapiti-Moustachial_stripe.jpeg/180px-New_Zealand_Pipit_Kapiti-Moustachial_stripe.jpeg" decoding="async" width="180" height="201" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/New_Zealand_Pipit_Kapiti-Moustachial_stripe.jpeg/270px-New_Zealand_Pipit_Kapiti-Moustachial_stripe.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e0/New_Zealand_Pipit_Kapiti-Moustachial_stripe.jpeg/360px-New_Zealand_Pipit_Kapiti-Moustachial_stripe.jpeg 2x" data-file-width="681" data-file-height="759" /></a><figcaption>New Zealand pipit Anthus novaeseelandiae novaeseelandiae, displaying a prominent <a href="#moustachial_stripe">moustachial stripe</a></figcaption></figure> <dt id="moustachial_stripe"><dfn>moustachial stripe </dfn></dt> <dd>Also, mustache stripe; whisker stripe; malar stripe. A dark feather colouration line running "obliquely from the <a href="#gape">gape</a> down and along the lower border of the <a href="#ear-coverts">ear-coverts</a>". Compare: <a href="#submoustachial_stripe">submoustachial stripe</a> and <a href="#lateral_throat-stripe">lateral throat-stripe</a>.<a href="#cite_note-Vinicombe15-29">[27]</a> Birds with moustachial stripes include some of the <a href="/wiki/Pipits" class="mw-redirect" title="Pipits">pipits</a> as well as <a href="/wiki/Buntings" class="mw-redirect" title="Buntings">buntings</a>.<a href="#cite_note-Vinicombe15-29">[27]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="N">N</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=14" title="Edit section: N">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Lesser_Whistling_Duck_(Dendrocygna_javanica),_Singapore_-cropped.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/03/Lesser_Whistling_Duck_%28Dendrocygna_javanica%29%2C_Singapore_-cropped.jpg/220px-Lesser_Whistling_Duck_%28Dendrocygna_javanica%29%2C_Singapore_-cropped.jpg" decoding="async" width="220" height="173" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/03/Lesser_Whistling_Duck_%28Dendrocygna_javanica%29%2C_Singapore_-cropped.jpg/330px-Lesser_Whistling_Duck_%28Dendrocygna_javanica%29%2C_Singapore_-cropped.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/03/Lesser_Whistling_Duck_%28Dendrocygna_javanica%29%2C_Singapore_-cropped.jpg/440px-Lesser_Whistling_Duck_%28Dendrocygna_javanica%29%2C_Singapore_-cropped.jpg 2x" data-file-width="1515" data-file-height="1188" /></a><figcaption>Close up of a <a href="/wiki/Lesser_whistling_duck" title="Lesser whistling duck">lesser whistling duck</a>. Note the hooked <a href="#nail">nail</a> at the tip of the beak.</figcaption></figure> <dt id="nail"><dfn>nail </dfn></dt> <dd>A plate of hard horny tissue at the tip of the beak of all birds in the family <a href="/wiki/Anatidae" title="Anatidae">Anatidae</a> (ducks, geese and swans).<a href="#cite_note-298">[294]</a> This <a href="/wiki/Shield" title="Shield">shield</a>-shaped structure, which sometimes spans the entire width of the beak, is often bent at the tip to form a hook.<a href="#cite_note-Elliot-299">[295]</a> It serves different purposes depending on the bird's primary food source. Most species use their nails to dig seeds out of mud or vegetation,<a href="#cite_note-300">[296]</a> while <a href="/wiki/Diving_duck" title="Diving duck">diving ducks</a> use theirs to pry <a href="/wiki/Mollusc" class="mw-redirect" title="Mollusc">molluscs</a> from rocks.<a href="#cite_note-301">[297]</a> There is evidence that the nail may help a bird to grasp things; species which use strong grasping motions to secure their food (such as when catching and holding onto a large squirming frog) have very wide nails.<a href="#cite_note-302">[298]</a> Certain types of <a href="/wiki/Mechanoreceptor" title="Mechanoreceptor">mechanoreceptors</a>, nerve cells that are sensitive to pressure, vibration or touch, are located under the nail.<a href="#cite_note-303">[299]</a></dd> <dt id="nape"><dfn>nape </dfn></dt> <dd>Also defined: hindneck. The back of the head, behind the <a href="#crown">crown</a>. The area between the nape and the <a href="#mantle">mantle</a> is known as the hindneck.<a href="#cite_note-Vinicombe15-29">[27]</a></dd> <dt id="nares"><dfn>nares </dfn></dt> <dd>The two holes—circular, oval or slit-like in shape—which lead to the <a href="/wiki/Nasal_cavities" class="mw-redirect" title="Nasal cavities">nasal cavities</a> within the bird's skull, and thus to the rest of the <a href="/wiki/Bird_anatomy#Respiratory_system" title="Bird anatomy">respiratory system</a>.<a href="#cite_note-Campbell375-40">[37]</a> In most bird species, the nares are located in the basal third of the upper mandible. <a href="/wiki/Kiwi_(bird)" title="Kiwi (bird)">Kiwis</a> are a notable exception; their nares are located at the tip of their bills.<a href="#cite_note-Stettenheim-95">[92]</a> A handful of species have no external nares. <a href="/wiki/Cormorant" title="Cormorant">Cormorants</a> and <a href="/wiki/Darter" title="Darter">darters</a> have primitive external nares as nestlings, but these close soon after the birds <a href="/wiki/Fledge" title="Fledge">fledge</a>; adults of these species (and <a href="/wiki/Gannet" title="Gannet">gannets</a> and <a href="/wiki/Booby" title="Booby">boobies</a> of all ages, which also lack external nostrils) breathe through their mouths. There is typically a <a href="/wiki/Nasal_septum" title="Nasal septum">septum</a> made of bone or cartilage that separates the two nares, but in some families (including gulls, cranes and New World vultures), the septum is missing. While the nares are uncovered in most species, they are covered with feathers in a few groups of birds, including <a href="/wiki/Grouse" title="Grouse">grouse</a> and <a href="/wiki/Lagopus" title="Lagopus">ptarmigans</a>, <a href="/wiki/Corvus" title="Corvus">crows</a> and some <a href="/wiki/Woodpecker" title="Woodpecker">woodpeckers</a>.<a href="#cite_note-Campbell375-40">[37]</a></dd> <dt id="nasal_canthus"><dfn>nasal canthus </dfn></dt> <dd>The area where the eyelids come together at the anterior corner of the eye, on the side of the <a href="#nares">nares</a>, as opposed to the <a href="#temporal_canthus">temporal canthus</a>.<a href="#cite_note-Pettingill10-136">[133]</a></dd> <dt id="natal_down"><dfn>natal down </dfn></dt> <dd>Also, neossoptiles. Also defined: protoptiles; mesoptiles. The layer of <a href="#down">down</a> feathers that cover most birds at some point in their early development. <a href="/wiki/Precocial" class="mw-redirect" title="Precocial">Precocial</a> nestlings are already covered with a layer of down when they hatch, while <a href="/wiki/Altricial" class="mw-redirect" title="Altricial">altricial</a> nestlings develop their down layer within days or weeks of hatching. <a href="/wiki/Megapode" title="Megapode">Megapode</a> hatchlings are the sole exception; they are already covered with <a href="/wiki/Pennaceous_feather" title="Pennaceous feather">contour feathers</a> when they hatch.<a href="#cite_note-304">[300]</a> The natal down coat is usually lost within a week or two of hatching.<a href="#cite_note-Gill108-305">[301]</a> There are two different kinds of natal down feathers; protoptiles and mesoptiles.<a href="#cite_note-Hosker1936-306">[302]</a> The former appears first<a href="#cite_note-307">[303]</a> and the latter appears second.<a href="#cite_note-308">[304]</a> Hathchlings born naked or with a diffuse coat of scant natal down feathers are called <a href="#psilopaedic">psilopaedic</a>, while those born covered with a dense fuzz of natal down are termed <a href="#ptilopaedic">ptilopaedic</a>.<a href="#cite_note-Gill108-305">[301]</a> Compare: <a href="#body_down">body down</a> and <a href="#powder_down">powder down</a>.</dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Nests.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Nests.svg/440px-Nests.svg.png" decoding="async" width="440" height="156" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Nests.svg/660px-Nests.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Nests.svg/880px-Nests.svg.png 2x" data-file-width="17492" data-file-height="6187" /></a><figcaption>An overview of the diversity in <a href="/wiki/Bird_nest" title="Bird nest">nest</a> placement and construction</figcaption></figure> <dt id="nest"><dfn>nest </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Bird_nest" title="Bird nest">Bird nest</a></div> <dd>Also, bird nest. Specialized types: burrow; cavity; cup (adherent cup; statant cup); dome; dormitory; eyries (or aeries); hanging; ledge; mound; pendant; platform; roost (or winter-nest); scrape; saucer or plate; and sphere. The spot in which a bird lays and <a href="/wiki/Avian_incubation" class="mw-redirect" title="Avian incubation">incubates</a> its <a href="/wiki/Egg_(biology)" class="mw-redirect" title="Egg (biology)">eggs</a> and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the <a href="/wiki/American_robin" title="American robin">American robin</a> or <a href="/wiki/Eurasian_blackbird" class="mw-redirect" title="Eurasian blackbird">Eurasian blackbird</a>, or the elaborately woven hanging nest of the <a href="/wiki/Montezuma_oropendola" title="Montezuma oropendola">Montezuma oropendola</a> or the <a href="/wiki/Village_weaver" title="Village weaver">village weaver</a>—for some species, a nest is simply a shallow depression made in sand; for others, it is the knot-hole left by a broken branch, a burrow dug into the ground, a chamber drilled into a tree, an enormous rotting pile of vegetation and earth, a shelf made of dried saliva or a mud dome with an entrance tunnel. The smallest bird nests are those of some <a href="/wiki/Hummingbird" title="Hummingbird">hummingbirds</a>, tiny cups which can be a mere 2 cm (0.79 in) across and 2–3 cm (0.79–1.18 in) high.<a href="#cite_note-Campbell386-309">[305]</a> At the other extreme, some nest mounds built by the <a href="/wiki/Dusky_scrubfowl" class="mw-redirect" title="Dusky scrubfowl">dusky scrubfowl</a> measure more than 11 m (36 ft) in diameter and stand nearly 5 m (16 ft) tall.<a href="#cite_note-310">[306]</a> Not all bird species build nests. Some species lay their eggs directly on the ground or rocky ledges, while <a href="/wiki/Brood_parasites" class="mw-redirect" title="Brood parasites">brood parasites</a> lay theirs in the nests of other birds, letting unwitting "foster parents" do all the work of rearing the young. Although nests are primarily used for breeding, they may also be reused in the non-breeding season for roosting and some species build special dormitory nests or roost nests (or winter-nest) that are used only for roosting.<a href="#cite_note-skutch-311">[307]</a> Most birds build a new nest each year, though some refurbish their old nests.<a href="#cite_note-312">[308]</a> The large eyries (or aeries) of some eagles are platform nests that have been used and refurbished for several years. In most species, the female does most or all of the nest construction, though the male often helps.<a href="#cite_note-313">[309]</a> The nest may form a part of the courtship display, such as in <a href="/wiki/Ploceidae" title="Ploceidae">weaver birds</a>.<a href="#cite_note-Elphick151-278">[274]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Bird_blink-edit.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Bird_blink-edit.jpg/220px-Bird_blink-edit.jpg" decoding="async" width="220" height="73" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Bird_blink-edit.jpg/330px-Bird_blink-edit.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d0/Bird_blink-edit.jpg/440px-Bird_blink-edit.jpg 2x" data-file-width="1380" data-file-height="460" /></a><figcaption>The <a href="#nictitating_membrane">nictitating membrane</a> as it covers the eye of a <a href="/wiki/Masked_lapwing" title="Masked lapwing">masked lapwing</a></figcaption></figure> <dt id="nictitating_membrane"><dfn>nictitating membrane </dfn></dt> <dd>Also, third eyelid. A transparent or <a href="/wiki/Translucent" class="mw-redirect" title="Translucent">translucent</a> third <a href="/wiki/Eyelid" title="Eyelid">eyelid</a> that is drawn across the eye for protection, to moisten it while maintaining vision.<a href="#cite_note-314">[310]</a> The nictitating membrane also covers the eye and acts as a <a href="/wiki/Contact_lens" title="Contact lens">contact lens</a> in many aquatic birds.<a href="#cite_note-Gill185-315">[311]</a> With the exception of pigeons and a few other species, most birds blink only with their nictitating membrane, and when not sleeping, use the eyelids chiefly only when the eye is threatened with some foreign matter.<a href="#cite_note-Pettingill11-316">[312]</a></dd> <dt id="nidicolous"><dfn>nidicolous</dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Nidicolous" class="mw-redirect" title="Nidicolous">Nidicolous</a></div> <dd>Young that remain in their nest after hatching for an extended period of time and thus must be <a href="#dietary_classification_terms_(-vores)">fed</a> by their parents.<a href="#cite_note-Pettingill371-18">[16]</a> Contrast: <a href="#nidifugous">nidifugous</a>.</dd> <dt id="nidifugous"><dfn>nidifugous</dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Nidifugous" class="mw-redirect" title="Nidifugous">Nidifugous</a></div> <dd>Young that leave the nest soon after hatching, joining their parents in <a href="#foraging">foraging</a>.<a href="#cite_note-Pettingill371-18">[16]</a> Contrast: <a href="#nidicolous">nidicolous</a>.</dd> <dt id="non-breeding_plumage"><dfn>non-breeding plumage</dfn></dt> <dd>See <a href="#basic_plumage">basic plumage</a>.</dd> <dt id="notch"><dfn>notch </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather#Emargination" title="Flight feather">Flight feather § Emargination</a></div> <dd>A pronounced narrowing at some variable distance along the feather edges at the outermost <a href="#primaries">primaries</a> of large soaring birds, particularly raptors. Whether these narrowings are called notches or <a href="#emarginations">emarginations</a> depends on the degree of their slope.<a href="#cite_note-Campbell656-20">[18]</a> An emargination is a gradual change, and can be found on either side of the feather. A notch is an abrupt change, and is only found on the wider trailing edge of the remiges. The presence of notches and emarginations creates gaps at the wingtip; air is forced through these gaps, increasing the generation of lift.<a href="#cite_note-Trail6-187">[184]</a></dd> <dt id="nuptial_plumage"><dfn>nuptial plumage</dfn></dt> <dd>See <a href="#alternate_plumage">alternate plumage</a>.</dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="O">O</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=15" title="Edit section: O">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="oology"><dfn>oology </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Oology" title="Oology">oology</a></div> <dd>The scientific study of eggs.<a href="#cite_note-Hauber2014-317">[313]</a></dd> <dt id="operculum"><dfn>operculum </dfn></dt> <dd>Plural: opercula. A membraneous, horny or <a href="/wiki/Cartilage" title="Cartilage">cartilaginous</a> flap covering the <a href="#nares">nares</a> of some birds.<a href="#cite_note-Gill117-318">[314]</a><a href="#cite_note-319">[315]</a> For example, in diving birds, the operculum keeps water out of the nasal cavity;<a href="#cite_note-Gill117-318">[314]</a> when the birds dive, the impact force of the water closes the operculum.<a href="#cite_note-320">[316]</a></dd> <dt id="overbrooding"><dfn>overbrooding </dfn></dt> <dd>The not uncommon phenomenon of birds continuing to <a href="#brood">brood</a> eggs that are not viable and will not hatch, sometimes for lengthy periods of time beyond the normal incubation period.<a href="#cite_note-Weaver83-321">[317]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="P">P</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=16" title="Edit section: P">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Bird.parts.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/27/Bird.parts.jpg/280px-Bird.parts.jpg" decoding="async" width="280" height="203" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/27/Bird.parts.jpg/420px-Bird.parts.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/2/27/Bird.parts.jpg 2x" data-file-width="449" data-file-height="325" /></a><figcaption><a href="#topography">Topography</a> of a typical <a href="/wiki/Passerine" title="Passerine">passerine</a></figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="passerine"><dfn>passerine </dfn></dt> <dd>Also, perching bird. Any bird of the <a href="/wiki/Order_(biology)" title="Order (biology)">order</a> Passeriformes, which includes more than half of all bird species. A notable feature of passerines compared to other orders of Aves is the arrangement of their toes—three pointing forward and one back—which facilitates perching. Sometimes known as perching birds or, less accurately, as <a href="/wiki/Songbird" title="Songbird">songbirds</a>, the passerines form one of the most diverse terrestrial <a href="/wiki/Vertebrate" title="Vertebrate">vertebrate</a> orders, with over 5,000 identified <a href="/wiki/Species" title="Species">species</a>.<a href="#cite_note-Ernst1946-322">[318]</a> The order has roughly twice as many species as <a href="/wiki/Rodent" title="Rodent">Rodentia</a>, the largest order of <a href="/wiki/Mammal" title="Mammal">mammals</a>. There are more than 110 families of passerine birds, the second-most of any <a href="/wiki/Tetrapods" class="mw-redirect" title="Tetrapods">tetrapods</a> (after <a href="/wiki/Squamata" title="Squamata">Squamata</a>, the scaled reptiles).</dd> <dt id="pectinate_claw"><dfn>pectinate claw </dfn></dt> <dd>Also, feather comb.<a href="#cite_note-FOOTNOTELovetteFitzpatrick2016181-255">[251]</a> A claw on the middle toe of some birds, such as nightjars, herons, and barn owls,<a href="#cite_note-Kennedy2014-323">[319]</a> with a serrated edge. The degree of <a href="/wiki/Serration" title="Serration">serration</a> varies from fine to coarse, depending on the species. It is used in <a href="#preening">preening</a>, functioning similar to a comb. Some birds may use it to straighten the <a href="#rictal_bristles">rictal bristles</a>.<a href="#cite_note-324">[320]</a> It may also play an important role in parasite removal. For example, a study of barn owls found a significant correlation between the number of serrated teeth on an individual's pectinate claw, and the prevalence of its <a href="/wiki/Lice" class="mw-redirect" title="Lice">lice</a> infestation.<a href="#cite_note-BarnOwlLice-325">[321]</a></dd> <dt id="pectoral_tuft"><dfn>pectoral tuft </dfn></dt> <dd>Elongated <a href="#feathers">feathers</a>, often brightly coloured, which arise from the sides of the <a href="#chest">chest</a> of some species of birds, including many <a href="/wiki/Sunbird" title="Sunbird">sunbirds</a>, <a href="/wiki/Spiderhunter" title="Spiderhunter">spiderhunters</a> and <a href="/wiki/Flowerpecker" title="Flowerpecker">flowerpeckers</a>.<a href="#cite_note-FOOTNOTEChekeMannAllen200115-326">[322]</a> They are typically hidden when the wing is folded on a perched bird, but prominent during courtship and territorial <a href="/wiki/Display_(zoology)" title="Display (zoology)">displays</a>.<a href="#cite_note-FOOTNOTEChekeMannAllen200123-327">[323]</a> In sunbirds and spiderhunters, these tufts may be yellow, red or orange; in flowerpeckers, they are usually white.<a href="#cite_note-FOOTNOTEChekeMannAllen200115-326">[322]</a> The size of the tufts in some species can be an indicator of a male's <a href="/wiki/Fitness_(biology)" title="Fitness (biology)">fitness</a> and status; males with larger tufts defend larger territories and have higher reproductive success.<a href="#cite_note-328">[324]</a></dd> <dt id="pennaceous_feather"><dfn>pennaceous feather </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Pennaceous_feather" title="Pennaceous feather">Pennaceous feather</a></div> <dd>Also, contour feather. A type of <a href="#feather">feather</a> present in most modern birds and in some other species of <a href="/wiki/Maniraptoriform" class="mw-redirect" title="Maniraptoriform">maniraptoriform</a> dinosaurs.<a href="#cite_note-329">[325]</a> Pennaceous feathers have a stalk called a <a href="#quill">quill</a>, with the basal part called a <a href="#calamus">calamus</a>, that is embedded in the skin exclusively at <a href="#pterylae">pterylae</a> (feather tracts).<a href="#cite_note-Chandler250-64">[61]</a> The calamus is hollow and has pith formed from the dry remains of the feather pulp. The calamus stretches between two openings—at its base is the <a href="#inferior_umbilicus">inferior umbilicus</a> and at its distal end is the <a href="#superior_umbilicus">superior umbilicus</a>; the <a href="#rachis">rachis</a> of the main stem, hosting the <a href="#vanes">vanes</a>, continues above it.<a href="#cite_note-Ritchison-63">[60]</a> The rachides of contour feathers have an umbilical groove on their underside, with the vanes or vexilla, spreading to either side. The vanes comprise many flattened <a href="#barbs">barbs</a>, that are connected to one another by <a href="#hooklets">hooklets</a> that are anchored into flanges on <a href="#proximal_barbules">proximal barbules</a> on neighboring barbs. Some specialized feathers are considered "modified" contour feathers, such as <a href="#ear_coverts">ear coverts</a> and bird eyelashes called <a href="#rictal_bristles">rictal bristles</a>.<a href="#cite_note-Chandler250-64">[61]</a> Contrast: <a href="#down_feathers">plumulaceous (down) feathers</a> and <a href="#filoplumes">filoplumes</a>.</dd> <dt id="philopatry"><dfn>philopatry </dfn></dt> <dd>The habit of a bird returning to the area it first bred.<a href="#cite_note-Elphick136-330">[326]</a></dd> <dt id="pigeon_milk"><dfn>pigeon milk</dfn></dt> <dd>The term for <a href="#crop_milk">crop milk</a> when found among all <a href="/wiki/Columbidae" title="Columbidae">pigeons and doves</a>.<a href="#cite_note-Prolactin-132">[129]</a></dd> <dt id="pileum"><dfn>pileum </dfn></dt> <dd>As defined in the treatise Manual of Ornithology: Avian Structure and Function, the "entire top of the head, including the <a href="#forehead">forehead</a>, <a href="#crown">crown</a> and occipital regions."<a href="#cite_note-Proctor64-124">[121]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Wellensittich01.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Wellensittich01.jpg/180px-Wellensittich01.jpg" decoding="async" width="180" height="270" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/05/Wellensittich01.jpg/270px-Wellensittich01.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/05/Wellensittich01.jpg/360px-Wellensittich01.jpg 2x" data-file-width="533" data-file-height="800" /></a><figcaption>A <a href="/wiki/Budgerigar" title="Budgerigar">budgerigar</a> with <a href="#pin_feathers">pin feathers</a> showing on its breast.</figcaption></figure> <dt id="pin_feather"><dfn>pin feather </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Pin_feather" title="Pin feather">Pin feather</a></div> <dd>Also, blood feather. A developing <a href="#feather">feather</a> encased in a <a href="#feather_sheath">feather sheath</a> that, unlike a fully developed feather, has a blood supply flowing through it. As such, damage to pin feathers can cause significant bleeding. Pin feathers may be the first feather growth during a bird's infancy, or those growing during <a href="#moulting">moulting</a> at any stage of a bird's life. As pin feather growth progresses, the blood supply is concentrated only in the base of the <a href="#calamus">calamus</a>. Pin feathers begin to develop after the feather bud <a href="/wiki/Invagination" title="Invagination">invaginates</a> a cylinder of <a href="/wiki/Epidermis" title="Epidermis">epidermal tissue</a> around the base of the dermal papilla, forming the feather follicle. At the base of the feather follicle, epithelial cells proliferate to grow the epidermal collar or cylinder. As the epidermal cylinder extends through <a href="/wiki/Dermis" title="Dermis">dermis</a>, it differentiates into a protective peripheral sheath, longitudinal barb ridges and <a href="/wiki/Growth_plates" class="mw-redirect" title="Growth plates">growth plates</a>. Over time these barb ridges grow in a <a href="/wiki/Helix" title="Helix">helical</a> manner, branching to create <a href="#barbs">barbs</a> and <a href="#barbules">barbules</a>, and fusing to form the central feather shaft. Moreover, the barb plate further differentiates into <a href="#hooklets">hooklets</a> and <a href="#cilia">cilia</a>, while the marginal and axial plate die to form the intervening space within the feather structure.<a href="#cite_note-Proctor86-331">[327]</a><a href="#cite_note-Athan2008-332">[328]</a><a href="#cite_note-Pettingill141-42-333">[329]</a></dd> <dt id="pinioning"><dfn>pinioning </dfn></dt> <dd>Also defined: pinion joint. The act of surgically removing one <a href="#pinion">pinion</a> <a href="/wiki/Joint" title="Joint">joint</a>—the joint of a bird's wing farthest from the body—thereby stopping the growth of the <a href="#primary_feathers">primary feathers</a>, to prevent flight. The <a href="/wiki/Animal_welfare" title="Animal welfare">animal welfare</a> impact of pinioning is subject to increasing debate. For example, it is known that the operation, which is often performed without pain relief, is just as painful in young birds as in mature birds, if not more so.<a href="#cite_note-Hawkins-334">[330]</a> Evidence also suggests that pinioning may cause a <a href="/wiki/Phantom_limb" title="Phantom limb">phantom limb</a> syndrome similar to what is observed in human <a href="/wiki/Amputees" class="mw-redirect" title="Amputees">amputees</a>.<a href="#cite_note-Hawkins-334">[330]</a></dd> <dt id="pinions"><dfn>pinions </dfn></dt> <dd>The outermost <a href="#primaries">primaries</a>—those connected to the <a href="/wiki/Phalanges" class="mw-redirect" title="Phalanges">phalanges</a>.<a href="#cite_note-335">[331]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Guiraca_caeruleaAAP086CB.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Guiraca_caeruleaAAP086CB.jpg/280px-Guiraca_caeruleaAAP086CB.jpg" decoding="async" width="280" height="226" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/Guiraca_caeruleaAAP086CB.jpg/420px-Guiraca_caeruleaAAP086CB.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/48/Guiraca_caeruleaAAP086CB.jpg/560px-Guiraca_caeruleaAAP086CB.jpg 2x" data-file-width="600" data-file-height="485" /></a><figcaption>The differences in plumage of <a href="/wiki/Blue_grosbeak" title="Blue grosbeak">blue grosbeak</a>, from top to bottom, between a breeding male (<a href="#alternate_plumage">alternate plumage</a>), a non-breeding male (<a href="#basic_plumage">basic plumage</a>), a female and a related <a href="/wiki/Indigo_bunting" title="Indigo bunting">indigo bunting</a></figcaption></figure> <dt id="plumage"><dfn>plumage </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Plumage" title="Plumage">Plumage</a></div> <dd>Plumage (<a href="/wiki/Latin_language" class="mw-redirect" title="Latin language">Latin</a>: plūma 'feather') refers both to the layer of <a href="#feathers">feathers</a> that cover a bird and the pattern, colour and arrangement of those feathers.<a href="#cite_note-336">[332]</a> The pattern and colours of plumage differ between species and subspecies, often vary with age and may vary sharply between males and females of the same species that exhibit <a href="#sexual_dimorphism">sexual dimorphism</a>. Within species there can be different <a href="#colour_morphs">colour morphs</a>. Despite the great variance, as broad observations: 1) among many bird species adult males are more brightly coloured than are females, especially when in <a href="#alternate_plumage">alternate or nuptial plumage</a>, as opposed to <a href="#basic_plumage">basic or winter plumage</a>; 2) when male birds undergo the <a href="#prebasic_moult">prebasic moult</a> and attain their non-breeding plumage, they much more closely resemble females; and 3) the plumage of juvenile birds (of both sexes) tends to be relatively dull and inconspicuous and typically resembles that of adult females.<a href="#cite_note-Pettingill194-337">[333]</a></dd> <dt id="plumology"><dfn>plumology </dfn></dt> <dd>Also, plumage science. The name for the science that is associated with the study of <a href="#feathers">feathers</a>.<a href="#cite_note-GalaPlum-338">[334]</a><a href="#cite_note-LangsFWPlumology-339">[335]</a></dd> <dt id="podotheca"><dfn>podotheca </dfn></dt> <dd>Also, foot sheath. Also defined: boot; reticulate; scutellate; booted. The skin that covers the bare feet and legs. It usually consists of many small scales, called <a href="#scutes">scutes</a>. This type of podotheca is described as being scutellate. When there are no scutes, and the podotheca is a smooth sheath, it is called a boot, and those with podotheca like this are called booted. The podotheca may also be reticulated with small and irregularly raised plates. This arrangement is considered to be reticulate.<a href="#cite_note-340">[336]</a></dd> <dt id="powder_down"><dfn>powder down </dfn></dt> <dd>Also, pulviplumes; feather dust. A special type of <a href="#down">down</a> that occurs in a few groups of apparently unrelated birds. In some species, the tips of the <a href="#barbules">barbules</a> on powder down feathers disintegrate, forming fine particles of <a href="/wiki/Keratin" title="Keratin">keratin</a>, which appear as a powder, or feather dust, among the feathers. These feathers grow continuously and are not moulted.<a href="#cite_note-341">[337]</a> In other species, the powder grains come from cells that surround the barbules of growing feathers.<a href="#cite_note-Campbell208-342">[338]</a> These specialized feathers are typically scattered among ordinary down feathers, though in some species, they occur in clusters.<a href="#cite_note-HBW39-157">[154]</a> All <a href="/wiki/Parrot" title="Parrot">parrots</a> have powder down, with some species (including the <a href="/wiki/Mealy_parrot" class="mw-redirect" title="Mealy parrot">mealy parrot</a>) producing copious amounts.<a href="#cite_note-343">[339]</a> It is also found in <a href="/wiki/Tinamou" title="Tinamou">tinamous</a> and <a href="/wiki/Heron" title="Heron">herons</a>.<a href="#cite_note-HBW39-157">[154]</a> The dust produced from powder down feathers is a known <a href="/wiki/Allergen" title="Allergen">allergen</a> in humans.<a href="#cite_note-344">[340]</a> Compare: <a href="#body_down">body down</a> & <a href="#natal_down">natal down</a>.</dd> <dt id="postjuvenal_moult"><dfn>postjuvenal moult</dfn></dt> <dd>See <a href="#prebasic_moult">prebasic moult</a>.</dd> <dt id="postnuptial_moult"><dfn>postnuptial moult</dfn></dt> <dd>See <a href="#prebasic_moult">prebasic moult</a>.</dd> <dt id="prealternate_moult"><dfn>prealternate moult </dfn></dt> <dd>Also, prenuptial moult (sp. variation: in the U.S., sometimes molt). The <a href="#moult">moult</a> before the breeding season that most birds undergo, during which parts of the <a href="#basic_plumage">basic plumage</a> are shed and <a href="#nuptial_plumage">nuptial plumage</a> is grown. "Prealternate moult" is used in <a href="#humphrey–parkes_terminology">Humphrey–Parkes terminology</a>, and "prenuptial moult" is the traditional term. In either system of nomenclature, in juveniles this type of moult is numbered, 1st, 2nd, 3rd (etc.), until the <a href="#definitive_plumage">definitive plumage</a> is attained, after which the numbering is dropped.<a href="#cite_note-Lovette126-345">[341]</a> Unlike the <a href="#prebasic_moult">prebasic moult</a>, in the prealternate moult the major <a href="#flight_feathers">flight feathers</a> and <a href="#primary_coverts">primary coverts</a> are not replaced in most species, and the feathers involved typically are "only head and body feathers, <a href="#wing_coverts">wing coverts</a> and sometimes <a href="#tertials">tertials</a> and <a href="#rectrices">rectrices</a>".<a href="#cite_note-HowellLewington2014-346">[342]</a></dd> <dt id="prebasic_moult"><dfn>prebasic moult </dfn></dt> <dd>Also, postnuptial moult (sp. variation: in the U.S., sometimes molt). Also defined: postjuvenal moult. The <a href="#moult">moult</a> after the breeding season that most birds undergo, during which <a href="#nuptial_plumage">nuptial plumage</a> is shed and <a href="#basic_plumage">basic or winter plumage</a> is grown. In <a href="#humphrey–parkes_terminology">Humphrey–Parkes terminology</a>, prebasic moults in juveniles, prior to attaining <a href="#definitive_plumage">definitive plumage</a>, are numbered the 1st, 2nd, 3rd (etc.) prebasic moult. In traditional terminology, the first is called the postjuvenal moult, and thereafter the 1st, 2nd, 3rd (etc.) postnuptial moult. In both nomenclature systems, after definitive plumage is reached, the numbering is dropped.<a href="#cite_note-Lovette126-345">[341]</a></dd> <dt id="precocial"><dfn>precocial </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Precocial" class="mw-redirect" title="Precocial">Precocial</a></div> <dd>Also defined: semi-precocial; altricial-precocial spectrum. Young that, at hatching, have their eyes open; are covered in <a href="#down_feathers">down feathers</a> (<a href="#ptilopaedic">ptilopaedic</a>); are <a href="/wiki/Homeothermy" title="Homeothermy">homeothermic</a>;<a href="#cite_note-SummersCrespi2013-13">[11]</a> and are able to leave the nest soon after hatching and join their parents in <a href="#foraging">foraging</a> activities (<a href="#nidifugous">nidifugous</a>). The contrasting state is <a href="#altricial">altricial</a> young, which are born "helpless"—more or less naked, blind, ectothermic and unable to leave the nest.<a href="#cite_note-Johnston2013-15">[13]</a> The young of many bird species do not precisely fit into either the precocial or altricial category, having some aspects of each and thus fall somewhere on an altricial-precocial spectrum.<a href="#cite_note-Urfi2011-16">[14]</a> A defined intermediate state is termed semi-precocial, typified by young born covered in down and with open eyes; that are usually able to walk shortly after hatching; but which remain mostly confined to the nest, relying on their parents for food (<a href="#nidicolous">nidicolous</a>).<a href="#cite_note-Pettingill371-18">[16]</a><a href="#cite_note-Khanna2005-347">[343]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><video id="mwe_player_1" poster="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv/220px--Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv.jpg" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" height="165" data-durationhint="10" data-mwtitle="Passer_domesticus_bathing_in_water,_Anas_platyrhynchos_in_background.ogv" data-mwprovider="wikimediacommons" resource="/wiki/File:Passer_domesticus_bathing_in_water,_Anas_platyrhynchos_in_background.ogv"><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/f/fb/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv.480p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="480p.vp9.webm" data-width="640" data-height="480" /><source src="//upload.wikimedia.org/wikipedia/commons/f/fb/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv" type="video/ogg; codecs="theora, vorbis"" data-width="640" data-height="480" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/f/fb/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv.144p.mjpeg.mov" type="video/quicktime" data-transcodekey="144p.mjpeg.mov" data-width="192" data-height="144" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/f/fb/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv.240p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="240p.vp9.webm" data-width="320" data-height="240" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/f/fb/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv.360p.webm" type="video/webm; codecs="vp8, vorbis"" data-transcodekey="360p.webm" data-width="480" data-height="360" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/f/fb/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv/Passer_domesticus_bathing_in_water%2C_Anas_platyrhynchos_in_background.ogv.360p.vp9.webm" type="video/webm; codecs="vp9, opus"" data-transcodekey="360p.vp9.webm" data-width="480" data-height="360" /></video><figcaption>A <a href="/wiki/House_sparrow" title="House sparrow">house sparrow</a> cleans itself in moving water while a <a href="/wiki/Mallard" title="Mallard">mallard</a> <a href="#preens">preens</a> in the background.</figcaption></figure> <dt id="preening"><dfn>preening </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Preening" title="Preening">Preening</a></div> <dd>Also, grooming. <a href="#feathers">Feathers</a> require maintenance and birds preen or groom them daily, spending an average of around 9% of their daily time on this activity.<a href="#cite_note-348">[344]</a> The <a href="#bill">bill</a> is used to brush away foreign particles and to apply <a href="/wiki/Wax" title="Wax">waxy</a> secretions from the <a href="/wiki/Uropygial_gland" title="Uropygial gland">uropygial gland</a>; these secretions protect the feathers' flexibility and act as an <a href="/wiki/Antimicrobial" title="Antimicrobial">antimicrobial agent</a>, inhibiting the growth of feather-degrading <a href="/wiki/Bacteria" title="Bacteria">bacteria</a>.<a href="#cite_note-349">[345]</a> This may be supplemented with the secretions of <a href="/wiki/Formic_acid" title="Formic acid">formic acid</a> from ants, which birds receive through a behaviour known as <a href="#anting">anting</a>, to remove feather parasites.<a href="#cite_note-350">[346]</a></dd> <dt id="prenuptial_moult"><dfn>prenuptial moult</dfn></dt> <dd>See <a href="#prealternate_moult">prealternate moult</a>.</dd> <dt id="primaries"><dfn>primaries </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather#Primaries" title="Flight feather">Flight feather § Primaries</a></div> <dd>Also, primary feathers; primary remiges. A type of <a href="#remex">remex</a> flight feather, they are connected to the <a href="/wiki/Manus_(zoology)" class="mw-redirect" title="Manus (zoology)">manus</a> (the bird's "hand", composed of carpometacarpus and <a href="/wiki/Phalanges" class="mw-redirect" title="Phalanges">phalanges</a>); these are the longest and narrowest of the remiges (particularly those attached to the phalanges), and they can be individually rotated. These feathers are especially important for flapping flight, as they are the principal source of <a href="/wiki/Thrust" title="Thrust">thrust</a>, moving the bird forward through the air. Most thrust is generated on the downstroke of flapping flight. However, on the upstroke (when the bird often draws its wing in close to its body), the primaries are separated and rotated, reducing air resistance while still helping to provide some thrust.<a href="#cite_note-351">[347]</a> The flexibility of the remiges on the wingtips of large soaring birds also allows for the spreading of those feathers, which helps to reduce the creation of wingtip <a href="/wiki/Vortex" title="Vortex">vortices</a>, thereby reducing <a href="/wiki/Drag_(force)" class="mw-redirect" title="Drag (force)">drag</a>.<a href="#cite_note-352">[348]</a> In most flighted birds, some of the distal <a href="#barbules">barbules</a> on the inner <a href="#vane">vane</a> of these feathers, called <a href="#friction_barbules">friction barbules</a>, are specialized, with large lobular barbicels that are thought to help grip and prevent slippage of overlying feathers.<a href="#cite_note-353">[349]</a> Species vary in the number of primaries they possess. The number in non-passerines generally varies between 9 and 11,<a href="#cite_note-Jenni7-354">[350]</a> but <a href="/wiki/Grebe" title="Grebe">grebes</a>, <a href="/wiki/Stork" title="Stork">storks</a> and <a href="/wiki/Flamingo" title="Flamingo">flamingos</a> have 12 and <a href="/wiki/Ostrich" title="Ostrich">ostriches</a> have 16.<a href="#cite_note-HBW37-355">[351]</a> While most modern <a href="/wiki/Passerine" title="Passerine">passerines</a> have ten primaries,<a href="#cite_note-Jenni7-354">[350]</a> some have only nine. Those with nine are missing the most distal primary, sometimes called the <a href="#remicle">remicle</a>, which is typically very small and sometimes rudimentary in passerines.<a href="#cite_note-HBW37-355">[351]</a></dd> <dt id="primary_projection"><dfn>primary projection </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather#Primary_extension" title="Flight feather">Flight feather § Primary extension</a></div> <dd>Also, primary extension. The distance that a bird's longest primaries extend beyond its longest secondaries (or <a href="#tertials">tertials</a>) when its wings are folded.<a href="#cite_note-Kaufman-356">[352]</a> As with <a href="#wing_formulae">wing formulae</a>, this measurement is useful for distinguishing between similarly plumaged birds; however, unlike wing formulae, it is not necessary to have the bird in-hand to make the measurement. Rather, this is a useful relative measurement—some species have long primary extensions, while others have shorter ones. Among the <a href="/wiki/Empidonax" title="Empidonax">Empidonax</a> <a href="/wiki/Tyrant_flycatcher" title="Tyrant flycatcher">flycatchers</a> of the Americas, for example, the <a href="/wiki/American_dusky_flycatcher" title="American dusky flycatcher">dusky flycatcher</a> has a much shorter primary extension than does the very similarly plumaged <a href="/wiki/Hammond%27s_flycatcher" title="Hammond's flycatcher">Hammond's flycatcher</a>.<a href="#cite_note-Kaufman-356">[352]</a> Europe's <a href="/wiki/Common_skylark" class="mw-redirect" title="Common skylark">common skylark</a> has a long primary projection, while that of the near-lookalike <a href="/wiki/Oriental_skylark" title="Oriental skylark">Oriental skylark</a> is very short.<a href="#cite_note-357">[353]</a> As a general rule, species which are long distance migrants will have longer primary projection than similar species which do not migrate or migrate shorter distances.<a href="#cite_note-358">[354]</a></dd> <dt id="proventriculus"><dfn>proventriculus </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Proventriculus" title="Proventriculus">proventriculus</a></div> <dd>The first part of the stomach of a bird. The inside is lined with gastric glands, which secrete gastric juices containing enzymes and hydrochloric acid. In some birds, such as petrels, the proventriculus is expandable. This allows these birds to either digest their food later or carry it back to their young. The proventriculus leads into the <a href="#gizzard">gizzard</a>.<a href="#cite_note-Elphick49-359">[355]</a></dd> <dt id="psilopaedic"><dfn>psilopaedic</dfn></dt> <dd>Young that are born naked or with only a small amount of <a href="#down">down</a> feather coverage, as opposed to birds that are <a href="#ptilopaedic">ptilopaedic</a>.<a href="#cite_note-Pettingill371-18">[16]</a></dd> <dt id="pterylae"><dfn>pterylae </dfn></dt> <dd>Singular: pteryla. The feather tracts of a bird's skin from which the <a href="#contour_feathers">contour feathers</a> grow, often in sharply defined and dense clusters—as opposed to the <a href="#apterylae">apterylae</a>.<a href="#cite_note-Proctor98-25">[23]</a> See related: <a href="#pterylosis">pterylosis</a>.</dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:PasserinePterylosis_(cropped).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/PasserinePterylosis_%28cropped%29.jpg/220px-PasserinePterylosis_%28cropped%29.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/PasserinePterylosis_%28cropped%29.jpg/330px-PasserinePterylosis_%28cropped%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5b/PasserinePterylosis_%28cropped%29.jpg/440px-PasserinePterylosis_%28cropped%29.jpg 2x" data-file-width="1248" data-file-height="936" /></a><figcaption><a href="#pterylosis">Pterylosis</a> (feather arrangement) of a typical <a href="#passerine">passerine</a></figcaption></figure> <dt id="pterylosis"><dfn>pterylosis </dfn></dt> <dd>Also, pterylography. The arrangement of feather tracts, as seen in a bird's <a href="#pterylae">pterylae</a> and <a href="#apterylae">apterylae</a>, which varies across bird families and has been used in the past as a means for determining the evolutionary relationships among them.<a href="#cite_note-360">[356]</a><a href="#cite_note-361">[357]</a></dd> <dt id="ptilopaedic"><dfn>ptilopaedic</dfn></dt> <dd>Young that are born covered with <a href="#down">down</a> feathers, as opposed to birds that are <a href="#psilopaedic">psilopaedic</a>.<a href="#cite_note-Pettingill371-18">[16]</a></dd> <dt id="pupil"><dfn>pupil </dfn></dt> <dd>The dark disk at the centre of a bird's eye through which light enters, surrounded by the coloured outer ring of the <a href="#iris">iris</a>.<a href="#cite_note-362">[358]</a></dd> <dt id="pygostyle"><dfn>pygostyle </dfn></dt> <dd>Also, tail bone. A skeletal formation, <a href="/wiki/Plowshare" title="Plowshare">plowshare</a>-shaped in birds, in which the final few <a href="/wiki/Caudal_(anatomical_term)" class="mw-redirect" title="Caudal (anatomical term)">caudal</a> <a href="/wiki/Vertebra" title="Vertebra">vertebrae</a> are fused into a single <a href="/wiki/Ossification" title="Ossification">ossification</a>, supporting the tail <a href="/wiki/Feather" title="Feather">feathers</a> and musculature. In modern <a href="/wiki/Bird" title="Bird">birds</a>, the <a href="#rectrices">rectrices</a> attach to these. The pygostyle is the main component of the <a href="#uropygium">uropygium</a>.<a href="#cite_note-Chatterjee2015-363">[359]</a><a href="#cite_note-Lovette177-364">[360]</a></dd> <dt id="pullus"><dfn>pullus </dfn></dt> <dd>(plural pulli) A chick in the downy phase of development.<a href="#cite_note-365">[361]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="Q">Q</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=17" title="Edit section: Q">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="quartering"><dfn>quartering</dfn></dt> <dd>A hunting technique where a bird flies slowly just above the water or ground in open habitats.<a href="#cite_note-Elphick2016-117-366">[362]</a></dd> <dt id="quill"><dfn>quill </dfn></dt> <dd>Also, primary quill; main stem; scapus. The main stem of a feather from which all structures branch, if any. The proximal portion is called the <a href="#calamus">calamus or shaft</a>, and the distal portion is called the <a href="#rachis">rachis</a>, with the demarcation point between them usually defined as the <a href="#superior_umbilicus">superior umbilicus</a>.<a href="#cite_note-Chandler250-64">[61]</a><a href="#cite_note-Pettingill29–32-367">[363]</a> However, some authorities define quill very differently, using it as a synonym for the calamus.<a href="#cite_note-Gill80-368">[364]</a> The contradiction between sources on this issue is quite sharp. For example, in Asa Chandler's well known treatise, A study of the structure of feathers, with reference to their taxonomic significance, "quill" is defined at page 250 as: "The main stem of a feather, including both shaft and calamus (Coues, 1884; Beebe, 1906, et al.). Synonyms: main stem (Nitzsche, 1867)".<a href="#cite_note-Chandler250-64">[61]</a> By contrast, in Frank B. Gill's well known treatise, Ornithology, he writes at page 80: "The hollow base of the shaft—the calamus, or quill—anchors the feather in a follicle below the surface of the skin".<a href="#cite_note-Gill80-368">[364]</a> In this glossary, the former definition will be used, treating quill as denoting the "main stem" of a feather.</dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="R">R</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=18" title="Edit section: R">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="rachis"><dfn>rachis </dfn></dt> <dd>Plural: rachises; rachides. Also, shaft. Variable sp.: rhachis.<a href="#cite_note-369">[365]</a> Also defined: medulla. The distal or upper section of the <a href="#quill">quill</a>, above the <a href="#calamus">calamus</a>, stretching from the <a href="#superior_umbilicus">superior umbilicus</a> to the tip of the feather, upon which the <a href="#vanes">vanes</a> and other structures are anchored. The rachis is flexible from side to side toward the blade projections, but far stiffer inward and outward from the bird's body. This arrangement aids in allowing the <a href="#flight_feather">flight feather</a> to act as a "resilient airfoil".<a href="#cite_note-Pettingill29–32-367">[363]</a> The rachis is composed of two layers: a pithy, opaque material makes up the core layer called the medulla, which is covered by a thin and translucent outer layer or cortex that features longitudinal internal ridges on the dorsal side and external ridges on the ventral side.<a href="#cite_note-Pettingill32-10">[8]</a></dd> <dt id="rectrices"><dfn>rectrices </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather#Rectrices" title="Flight feather">Flight feather § Rectrices</a></div> <dd>Singular: rectrix. From the Latin for 'helmsman', they are the long, stiff, asymmetrically shaped, but symmetrically paired <a href="/wiki/Pennaceous_feather" title="Pennaceous feather">pennaceous feathers</a> on the tail of a bird, which help it to brake and steer in flight. They lie in a single horizontal row on the rear margin of the anatomic tail. The vast majority of species having six pairs. They are absent in grebes and some <a href="/wiki/Ratite" title="Ratite">ratites</a>, and greatly reduced in size in penguins.<a href="#cite_note-HBW37-355">[351]</a><a href="#cite_note-370">[366]</a><a href="#cite_note-371">[367]</a> Many <a href="/wiki/Grouse" title="Grouse">grouse</a> species have more than 12 rectrices. Some species (including <a href="/wiki/Ruffed_grouse" title="Ruffed grouse">ruffed grouse</a>, <a href="/wiki/Hazel_grouse" title="Hazel grouse">hazel grouse</a> and <a href="/wiki/Common_snipe" title="Common snipe">common snipe</a>) have a number that varies among individuals.<a href="#cite_note-372">[368]</a> <a href="/wiki/Domestic_pigeon" title="Domestic pigeon">Domestic pigeons</a> have a highly variable number, due to centuries of selective breeding.<a href="#cite_note-373">[369]</a></dd> <dt id="remiges"><dfn>remiges </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather#Remiges" title="Flight feather">Flight feather § Remiges</a></div> <dd>Singular: remex. Also defined: postpatagium. From the Latin for 'oarsman', they are the long, stiff, asymmetrically shaped, but symmetrically paired <a href="/wiki/Pennaceous_feather" title="Pennaceous feather">pennaceous feathers</a> on the <a href="/wiki/Wing" title="Wing">wings</a> of a bird. They are located on the <a href="/wiki/Posterior_(anatomy)" class="mw-redirect" title="Posterior (anatomy)">posterior</a> side of the wing. <a href="/wiki/Ligament" title="Ligament">Ligaments</a> attach the long calami firmly to the wing bones, and a thick, strong band of <a href="/wiki/Tendon" title="Tendon">tendinous</a> tissue known as the postpatagium helps to hold and support the remiges in place.<a href="#cite_note-374">[370]</a> Corresponding remiges on individual birds are <a href="/wiki/Symmetry" title="Symmetry">symmetrical</a> between the two wings, matching to a large extent in size and shape (except in the case of <a href="/wiki/Mutation" title="Mutation">mutation</a> or damage), though not necessarily in pattern.<a href="#cite_note-Trail8-375">[371]</a><a href="#cite_note-376">[372]</a> They are given different names depending on their position along the wing.</dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sylviaatricapillamap2.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/67/Sylviaatricapillamap2.png/180px-Sylviaatricapillamap2.png" decoding="async" width="180" height="166" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/67/Sylviaatricapillamap2.png/270px-Sylviaatricapillamap2.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/67/Sylviaatricapillamap2.png/360px-Sylviaatricapillamap2.png 2x" data-file-width="400" data-file-height="368" /></a><figcaption><div style="text-align:left;"><style data-mw-deduplicate="TemplateStyles:r981673959">.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}</style>   Breeding summer visitor <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959">   Resident year-round <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959">   Winter visitor</div> Range map for <a href="/wiki/Eurasian_blackcap" title="Eurasian blackcap">Eurasian blackcaps</a>—corresponding to the example use of "<a href="#resident">resident</a>" in its definition at the left</figcaption></figure> <dt id="remicle"><dfn>remicle </dfn></dt> <dd>Also, little remex. The most distal <a href="#primary_feather">primary feather</a>. The remicle is very small and usually non-functional—interpreted by <a href="/wiki/Christian_Ludwig_Nitzsch" title="Christian Ludwig Nitzsch">Christian Ludwig Nitzsch</a> as "an aborted first primary". It was named by Richard S. Wray in 1887, who similarly thought of it as "representing an originally functional primary".<a href="#cite_note-377">[373]</a></dd> <dt id="resident"><dfn>resident </dfn></dt> <dd>Also, permanent resident; sedentary. Non-<a href="/wiki/Bird_migration" title="Bird migration">migratory</a>; a bird that stays year-round and breeds in one geographic area or habitat.<a href="#cite_note-Lovette458-378">[374]</a> Both permanent resident and sedentary are common with the defined usage. Although resident is used in this sense, it is often used as well for birds that are "migratory in part of their breeding range and resident elsewhere",<a href="#cite_note-Terrill&Able-379">[375]</a> e.g., "<a href="/wiki/Eurasian_blackcap" title="Eurasian blackcap">Eurasian blackcaps</a> (Sylvia atricapilla) are summer visitors to Eastern and Northern Europe, resident in Western Europe and winter visitors to Africa."</dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:BarbetRictalBristle.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/BarbetRictalBristle.jpg/220px-BarbetRictalBristle.jpg" decoding="async" width="220" height="139" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/BarbetRictalBristle.jpg/330px-BarbetRictalBristle.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/38/BarbetRictalBristle.jpg/440px-BarbetRictalBristle.jpg 2x" data-file-width="1518" data-file-height="962" /></a><figcaption><a href="#rictal_bristles">Rictal bristles</a> of a <a href="/wiki/White-cheeked_barbet" title="White-cheeked barbet">white-cheeked barbet</a></figcaption></figure> <dt id="rictal_bristles"><dfn>rictal bristles </dfn></dt> <dd>Also, bristles; bristle feathers; eyelashes. Stiff, hair-like, tapering feathers with a large <a href="#rachis">rachis</a> but few <a href="#barbs">barbs</a> found around the eyes and the base of the <a href="#beak">beak</a> of some bird species.<a href="#cite_note-Lederer-380">[376]</a> They are common among <a href="/wiki/Insectivorous" class="mw-redirect" title="Insectivorous">insectivorous</a> birds, but are also found in some non-insectivorous species.<a href="#cite_note-Conover-381">[377]</a> They may serve a similar purpose to <a href="/wiki/Eyelash" title="Eyelash">eyelashes</a> and <a href="/wiki/Vibrissae" class="mw-redirect" title="Vibrissae">vibrissae</a> in <a href="/wiki/Mammal" title="Mammal">mammals</a>. Although there is as yet no clear evidence, it has been suggested that rictal bristles have sensory functions and may help insectivorous birds to capture prey.<a href="#cite_note-Lederer-380">[376]</a><a href="#cite_note-382">[378]</a> There is some experimental evidence to suggest that bristles may prevent particles from striking the eyes if, for example, a prey item is missed or breaks apart upon contact.<a href="#cite_note-Conover-381">[377]</a></dd> <dt id="rosette"><dfn>rosette </dfn></dt> <dd>Also, gape rosette. A fleshy rosette found at the corners of the beaks of some birds, such as the <a href="/wiki/Puffin" title="Puffin">puffin</a>.<a href="#cite_note-383">[379]</a> In the puffin, this is grown as part of its display plumage.<a href="#cite_note-384">[380]</a></dd> <dt id="rhamphotheca"><dfn>rhamphotheca</dfn></dt> <dd>The outer surface of the beak consisting of a thin horny sheath of <a href="/wiki/Keratin" title="Keratin">keratin</a>,<a href="#cite_note-Proctor66-36">[33]</a><a href="#cite_note-Gill148-37">[34]</a> which can be subdivided into the <a href="#rhinotheca">rhinotheca</a> of the <a href="#upper_mandible">upper mandible</a> and the <a href="#gnathotheca">gnathotheca</a> of the <a href="#lower_mandible">lower mandible</a>.<a href="#cite_note-Campbell47-38">[35]</a> This covering arises from the <a href="/wiki/Malpighian_layer" title="Malpighian layer">Malpighian layer</a> of the bird's <a href="/wiki/Epidermis_(zoology)" title="Epidermis (zoology)">epidermis</a>,<a href="#cite_note-Campbell47-38">[35]</a> growing from plates at the base of each mandible.<a href="#cite_note-385">[381]</a> There is a <a href="/wiki/Vascular" class="mw-redirect" title="Vascular">vascular</a> layer between the rhamphotheca and the deeper layers of the <a href="/wiki/Dermis" title="Dermis">dermis</a>, which is attached directly to the <a href="/wiki/Periosteum" title="Periosteum">periosteum</a> of the bones of the beak.<a href="#cite_note-Samour296-386">[382]</a> The rhamphotheca grows continuously in most birds, and in some species, the colour varies seasonally.<a href="#cite_note-387">[383]</a></dd> <dt id="rhinotheca"><dfn>rhinotheca</dfn></dt> <dd>The <a href="#rhamphotheca">rhamphotheca</a> (thin horny sheath of <a href="/wiki/Keratin" title="Keratin">keratin</a>) covering the <a href="#upper_mandible">upper mandible</a>.<a href="#cite_note-Proctor66-36">[33]</a><a href="#cite_note-Gill148-37">[34]</a><a href="#cite_note-Campbell47-38">[35]</a></dd> <dt id="rump"><dfn>rump </dfn></dt> <dd>Also, uropygium; uropygial region; parson's nose, pope's nose; sultan's nose. <a href="#topography">Topographically</a>, the region of a bird's <a href="#upperparts">upperparts</a> between the end of the back and the base of the tail.<a href="#cite_note-Pettingill8-388">[384]</a> Anatomically, the fleshy protuberance visible at the posterior end of a bird. Its swollen appearance results from it housing the <a href="#uropygial_gland">uropygial gland</a>.<a href="#cite_note-Damerow2012-389">[385]</a> See related: <a href="#pygostyle">pygostyle</a>.</dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="S">S</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=19" title="Edit section: S">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Riesenseeadler_Fang.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Riesenseeadler_Fang.JPG/220px-Riesenseeadler_Fang.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Riesenseeadler_Fang.JPG/330px-Riesenseeadler_Fang.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b8/Riesenseeadler_Fang.JPG/440px-Riesenseeadler_Fang.JPG 2x" data-file-width="2048" data-file-height="1536" /></a><figcaption><a href="#scales">Scales</a> on the <a href="#talons">talons</a> of a <a href="/wiki/Steller%27s_sea_eagle" title="Steller's sea eagle">Steller's sea eagle</a> (Haliaeetus pelagicus)</figcaption></figure> <dt id="scales"><dfn>scales </dfn></dt> <dd>Specialized types: cancella; scutella; scutes. Also defined: reticulae; acrometatarsium / acrotarsium. The <a href="/wiki/Scale_(anatomy)" class="mw-redirect" title="Scale (anatomy)">scales</a> of birds are composed of keratin like their beaks and claws, and are found mainly on the toes and <a href="/wiki/Metatarsus" class="mw-redirect" title="Metatarsus">metatarsus</a>, though they may appear further up on the ankle. They do not overlap significantly, except in the cases of <a href="/wiki/Kingfisher" title="Kingfisher">kingfishers</a> and <a href="/wiki/Woodpecker" title="Woodpecker">woodpeckers</a>. The scales and scutes of birds were originally thought to be <a href="/wiki/Homology_(biology)" title="Homology (biology)">homologous</a> to those of reptiles and mammals;<a href="#cite_note-Lucas-390">[386]</a> later research, however, suggests that scales in birds re-evolved after the evolution of feathers.<a href="#cite_note-Sawyer-391">[387]</a><a href="#cite_note-Dhouailly-392">[388]</a> Bird embryos begin development with smooth skin. On the feet, the <a href="/wiki/Stratum_corneum" title="Stratum corneum">corneum</a>, or outermost layer of this skin may keratinize, thicken and form scales. Bird scales can be organized into: i) cancella—minute scales which are really just a thickening and hardening of the skin, crisscrossed with shallow grooves;<a href="#cite_note-LucasStettenheim1972-393">[389]</a> ii) scutella—scales that are not quite as large as scutes, such as those found on the <a href="/wiki/Caudal_(anatomical_term)" class="mw-redirect" title="Caudal (anatomical term)">caudal</a>, or hind part, of the chicken <a href="/wiki/Metatarsus" class="mw-redirect" title="Metatarsus">metatarsus</a>;<a href="#cite_note-LucasStettenheim1972-393">[389]</a> and iii) <a href="/wiki/Scute" title="Scute">scutes</a>—the largest scales, usually on the <a href="/wiki/Anterior" class="mw-redirect" title="Anterior">anterior</a> surface of the metatarsus and <a href="/wiki/Dorsum_(biology)" class="mw-redirect" title="Dorsum (biology)">dorsal</a> surface of the toes. The rows of scutes on the anterior of the metatarsus is sometimes termed an "acrometatarsium" or "acrotarsium".<a href="#cite_note-LucasStettenheim1972-393">[389]</a> Reticulae, by contrast, are small, keeled scale-like structures covering the bottoms of bird feet, but are not true scales. Evolutionary developmental studies on reticulae found that they are composed entirely of <a href="/wiki/Alpha-keratin" title="Alpha-keratin">alpha-keratin</a> (whereas, true epidermal scales are composed of a mix of alpha and beta keratin).<a href="#cite_note-Dhouailly-392">[388]</a> This, along with their unique structure, has led to the suggestion that reticulae are actually feather buds that were arrested early in development.<a href="#cite_note-Stettenheim-95">[92]</a><a href="#cite_note-Dhouailly-392">[388]</a><a href="#cite_note-394">[390]</a> See also: <a href="#podotheca">podotheca</a>.</dd> <dt id="scapulars"><dfn>scapulars </dfn></dt> <dd>Also, humeral region. Feathers covering a bird's scapula "at the base of the dorsal wing".<a href="#cite_note-Campbell52-395">[391]</a></dd> <dt id="secondaries"><dfn>secondaries </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather#Secondaries" title="Flight feather">Flight feather § Secondaries</a></div> <dd>Also, secondary feathers; secondary remiges. A type of <a href="#remex">remex</a> flight feather, they are connected to the <a href="/wiki/Ulna" title="Ulna">ulna</a>. In some but not all bird species, the ligaments that bind secondaries to the bone connect to small, rounded projections that are called quill knobs. Secondary feathers remain close together in flight (they cannot be individually separated like the primaries can) and help to provide lift by creating the airfoil shape of the bird's wing. Secondaries tend to be shorter and broader than primaries, with blunter ends. They vary in number from six in <a href="/wiki/Hummingbird" title="Hummingbird">hummingbirds</a>, to as many as 40 in some species of <a href="/wiki/Albatross" title="Albatross">albatross</a>. In general, larger and longer-winged species have a larger number of secondaries.<a href="#cite_note-Sibley17-54">[51]</a> Birds in more than 40 non-<a href="#passerine">passerine</a> families are missing the fifth secondary feather on each wing; a state known as <a href="#diastataxis">diastataxis</a>.<a href="#cite_note-Campbell656-20">[18]</a></dd> <dt id="semiplume"><dfn>semiplume </dfn></dt> <dd>Also, semiplume feather. A type of feather that has features straddling the differences between true <a href="#down">down</a> and <a href="#contour">contour</a> feathers, such as by lacking cross-attachment between their <a href="#barbs">barbs</a> (i.e., without a <a href="#flange">flange</a>–<a href="#hooklet">hooklet</a> anchoring system), but having a central, full-length shaft as in contour feathers. They are usually found on the margins of the pennaceous <a href="#pterylae">feather tracts</a> and, like down, provide insulative qualities and help fill out the plumage. <a href="#crest_feathers">Crest feathers</a> are a type of semiplume.<a href="#cite_note-FarnerKing2013-163">[160]</a><a href="#cite_note-ScottMcFarland2010-396">[392]</a><a href="#cite_note-Pettingill39-397">[393]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Male_and_female_pheasant.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Male_and_female_pheasant.jpg/220px-Male_and_female_pheasant.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Male_and_female_pheasant.jpg/330px-Male_and_female_pheasant.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/79/Male_and_female_pheasant.jpg/440px-Male_and_female_pheasant.jpg 2x" data-file-width="600" data-file-height="450" /></a><figcaption><a href="#sexually_dimorphic">Sexually dimorphic</a> female (left) and male (right) <a href="/wiki/Common_pheasant" title="Common pheasant">common pheasant</a>, illustrating the dramatic difference in both colour and size between the species' sexes</figcaption></figure> <dt id="sexual_dimorphism"><dfn>sexual dimorphism </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Sexual_dimorphism#Birds" title="Sexual dimorphism">Sexual dimorphism § Birds</a></div> <dd>The common phenomenon amongst birds in which males and females of the same species exhibit different characteristics beyond the differences in their sexual organs. It can manifest in size or plumage differences. Sexual size dimorphism varies among taxa with males typically being larger, though this is not always the case, i.e., in <a href="/wiki/Birds_of_prey" class="mw-redirect" title="Birds of prey">birds of prey</a>, <a href="/wiki/Hummingbird" title="Hummingbird">hummingbirds</a> and some species of flightless birds.<a href="#cite_note-398">[394]</a><a href="#cite_note-399">[395]</a> Plumage dimorphism, in the form of ornamentation or colouration, also varies, though males are typically the more ornamented or brightly coloured sex.<a href="#cite_note-400">[396]</a> Such differences have been attributed to the unequal reproductive contributions of the sexes.<a href="#cite_note-401">[397]</a></dd> <dt id="shaft"><dfn>shaft</dfn></dt> <dd>See entry for <a href="#rachis">rachis</a>.</dd> <dt id="sides"><dfn>sides</dfn></dt> <dd>The <a href="#topography">topographical</a> area between the <a href="#breast">breast</a> and the <a href="#back">back</a>, stretching from the <a href="#axilla">axilla</a> (underarm) to the <a href="/wiki/Iliac_crest" title="Iliac crest">Iliac crest</a>.<a href="#cite_note-402">[398]</a></dd> <div class="noprint wikilien_alternatif" style="clear:right; float:right; margin:0 0 1em 1em; width:280px; border:solid #c0c0c0 1px; padding:0px; font-size:90%; text-align:left;"> <table cellpadding="2" cellspacing="0" style="background-color:var(--background-color-neutral-subtle, #f8f9fa); color:var(--color-base, #202122);"> <tbody><tr style="vertical-align:middle;"> <td style="line-height:50px;vertical-align:middle;text-align:center;"> <a href="/wiki/Portal:Birds" title="Portal:Birds"><img alt="Dickcissel male perched on a metal pole singing, with neck stretched and beak open." src="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png/50px-Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png" decoding="async" width="50" height="76" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png/75px-Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/de/Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png/100px-Spiza_americana_male_94_231051626_13e01e8125_o_cropped_flipped.png 2x" data-file-width="447" data-file-height="679" /></a> </td> <td style="vertical-align:middle;line-height:2;"> <div class="center" style="width:auto; margin-left:auto; margin-right:auto;">Songs and calls</div><hr /> The extraordinary <a href="#song">song</a> of the <a href="/wiki/Kookaburra" title="Kookaburra">Kookaburra</a>: <audio id="mwe_player_2" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" style="width:220px;" data-durationhint="17" data-mwtitle="Cucaburra.ogg" data-mwprovider="wikimediacommons"><source src="//upload.wikimedia.org/wikipedia/commons/d/dd/Cucaburra.ogg" type="audio/ogg; codecs="vorbis"" data-width="0" data-height="0" /><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/d/dd/Cucaburra.ogg/Cucaburra.ogg.mp3" type="audio/mpeg" data-transcodekey="mp3" data-width="0" data-height="0" /></audio> <div class="center" style="width:auto; margin-left:auto; margin-right:auto;"><a rel="nofollow" class="external text" href="http://www.xeno-canto.org/explore?query=Dacelo">Listen to the Kookaburra on xeno-canto</a> </div> </td></tr></tbody></table></div> <dt id="song"><dfn>song </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Bird_vocalization" title="Bird vocalization">Bird vocalization</a></div> <dd>A type of bird vocalization associated with <a href="/wiki/Bird#Breeding" title="Bird">courtship and mating</a>, tending to be longer and more complex than a bird's <a href="#call">call</a>, which serve such functions as giving alarm or keeping members of a <a href="/wiki/Herd" title="Herd">flock</a> in contact.<a href="#cite_note-Voices-66">[63]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Mallard_speculum.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Mallard_speculum.jpg/180px-Mallard_speculum.jpg" decoding="async" width="180" height="216" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Mallard_speculum.jpg/270px-Mallard_speculum.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Mallard_speculum.jpg/360px-Mallard_speculum.jpg 2x" data-file-width="1331" data-file-height="1600" /></a><figcaption>A male <a href="/wiki/Mallard" title="Mallard">mallard</a>. Note the white-edged, blue and black <a href="#speculum">speculum</a> seen on the wing.</figcaption></figure> <dt id="speculum"><dfn>speculum </dfn></dt> <dd>Also, speculum feathers; mirror. A patch of usually brightly coloured feathers, often iridescent, on the inner <a href="#secondaries">secondary remiges</a> in a number of duck species,<a href="#cite_note-Cooper1870-403">[399]</a> though other birds may have them, such as the bright red or orange wing speculum of several <a href="/wiki/Parrots" class="mw-redirect" title="Parrots">parrots</a> from the genus <a href="/wiki/Amazona" class="mw-redirect" title="Amazona">Amazona</a>.<a href="#cite_note-Panama-404">[400]</a></dd> <dt id="spur"><dfn>spur </dfn></dt> <dd>Outgrowths of <a href="/wiki/Bone" title="Bone">bone</a> covered in a sheath of <a href="/wiki/Horn_(anatomy)" title="Horn (anatomy)">horn</a> which are found on some birds. Spurs are most commonly found on the feet or legs, though some birds possess spurs on the leading edge of the wings.<a href="#cite_note-Rand-405">[401]</a></dd> <dt id="sternum"><dfn>sternum </dfn></dt> <dd>Plural: sterna. The breastbone of a bird. There are two types: i) carinate sterna—appearing in flighted birds, in which the ventral surface is <a href="/wiki/Keel" title="Keel">keel</a>-shaped, which provides ample surface area for attachment of wing muscles used for flight; and ii) ratite sterna—appearing in flightless birds, such as <a href="/wiki/Rhea_(bird)" title="Rhea (bird)">rhea</a>, in which the ventral surface is flattened.<a href="#cite_note-Pettingill56-406">[402]</a></dd> <dt id="submoustachial_stripe"><dfn>submoustachial stripe </dfn></dt> <dd> A usually light stripe of colour between the <a href="#moustachial_stripe">moustachial stripe</a> above, and the <a href="#lateral_throat-stripe">lateral throat-stripe</a> below.<a href="#cite_note-Vinicombe15-29">[27]</a></dd> <dt id="supercilium"><dfn>supercilium </dfn></dt> <dd>Plural: supercilia. Also, superciliary line; eyebrow / eye brow. A pale line appearing above the eye of a bird.<a href="#cite_note-Vinicombe14-100">[97]</a> Compare <a href="#eye_stripe">eye stripe</a>.</dd> <dt id="superior_umbilicus"><dfn>superior umbilicus </dfn></dt> <dd>Also, distal umbilicus. A very small opening on the ventral side (facing toward the bird's skin) of a feather's shaft, marking the distal end of the <a href="#calamus">calamus</a> and the start of the <a href="#rachis">rachis</a>. It is a remnant of the epithelial tube used by a bird's body to construct the feather.<a href="#cite_note-Pettingill29-192">[189]</a> Compare: <a href="#inferior_umbilicus">inferior umbilicus</a>.</dd> <dt id="supraloral"><dfn>supraloral </dfn></dt> <dd>Where a stripe is present only above the <a href="#lores">lores</a>, and does not continue behind the eye, it is called a supraloral stripe or simply supraloral, rather than the <a href="#supercilium">supercilium</a>.<a href="#cite_note-407">[403]</a></dd> <dt id="syrinx"><dfn>syrinx</dfn></dt> <dd>From the Greek word for <a href="/wiki/Pan_pipes" class="mw-redirect" title="Pan pipes">pan pipes</a>, σύριγξ, it is the vocal organ of birds. Located at the base of a bird's <a href="/wiki/Vertebrate_trachea" class="mw-redirect" title="Vertebrate trachea">trachea</a>, it produces sounds without the <a href="/wiki/Vocal_folds" class="mw-redirect" title="Vocal folds">vocal folds</a> of mammals.<a href="#cite_note-Terres995-408">[404]</a> As air flows through the syrinx, sound is produced by the vibration of some or all of the membrana tympaniformis (the walls of the syrinx) and a bar of cartilage connecting the dorsal and ventral extremities, known as the <a href="/wiki/Pessulus" title="Pessulus">pessulus</a>. This sets up a self-oscillating system that regulates the airflow used to create vocalizations. Sound modulation is achieved by varying the tension of muscles connected to the membranes and bronchial openings involved.<a href="#cite_note-409">[405]</a> The syrinx enables some species of birds (such as <a href="/wiki/Parrot" title="Parrot">parrots</a>, <a href="/wiki/Crow" title="Crow">crows</a> and <a href="/wiki/Myna" title="Myna">mynas</a>) to mimic human speech. Unlike the mammalian <a href="/wiki/Larynx" title="Larynx">larynx</a>, the syrinx is located where the trachea forks into the lungs. Thus, <a href="/wiki/Lateralization_of_bird_song" title="Lateralization of bird song">lateralization of bird song</a> is possible, and some <a href="/wiki/Songbirds" class="mw-redirect" title="Songbirds">songbirds</a> can produce more than one sound at a time.<a href="#cite_note-410">[406]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="T">T</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=20" title="Edit section: T">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="tail"><dfn>tail </dfn></dt> <dd>While the underlying structure of the tail is made up of bone (the pygostyle<a href="#cite_note-Cade1982-411">[407]</a>) and flesh, the term "tail" is most commonly used to refer to the feathers growing from the region and the shape they form—that is, <a href="#undertail_coverts">undertail</a> and <a href="#uppertail_coverts">uppertail</a> coverts and <a href="#rectrices">rectrices</a>, commonly radiating in a fan configuration.<a href="#cite_note-Pettingill21-128">[125]</a></dd> <dt id="tail_coverts"><dfn>tail coverts</dfn></dt> <dd>See: <a href="#undertail_coverts">undertail coverts</a>, <a href="#uppertail_coverts">uppertail coverts</a> and <a href="#crissum">crissum</a>.</dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Eesti_rahvuslind.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Eesti_rahvuslind.jpg/220px-Eesti_rahvuslind.jpg" decoding="async" width="220" height="159" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Eesti_rahvuslind.jpg/330px-Eesti_rahvuslind.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Eesti_rahvuslind.jpg/440px-Eesti_rahvuslind.jpg 2x" data-file-width="3191" data-file-height="2312" /></a><figcaption>A barn swallow displaying <a href="#tail_streamers">tail streamers</a></figcaption></figure> <dt id="tail_streamers"><dfn>tail streamers </dfn></dt> <dd>The elongated, narrow tips of the <a href="#tail">tail</a> seen in some birds.<a href="#cite_note-MollerBarbosa1998-412">[408]</a> They generally function as a <a href="/wiki/Biological_ornament#Sexual_selection" title="Biological ornament">sexual ornament</a>.<a href="#cite_note-MatyjasiakJabŁoński2001-413">[409]</a> In the <a href="/wiki/Barn_swallow" title="Barn swallow">barn swallow</a>, this has resulted in tail streamers about 12 mm (0.47 in) longer than is aerodynamically optimal.<a href="#cite_note-Buchanan2000-414">[410]</a></dd> <dt id="talon"><dfn>talon </dfn></dt> <dd>The claw of a <a href="/wiki/Bird_of_prey" title="Bird of prey">bird of prey</a>; its primary hunting tool.<a href="#cite_note-415">[411]</a> The talons are very important; without them, most birds of prey would not be able to catch their food. Some birds also use claws for defensive purposes. <a href="/wiki/Cassowary" title="Cassowary">Cassowaries</a> use claws on their inner toe (digit II) for defence, and have been known to disembowel people. All birds, however, have claws, which are used as general holdfasts and protection for the tip of the digits. The <a href="/wiki/Hoatzin" title="Hoatzin">hoatzin</a> and <a href="/wiki/Turaco" title="Turaco">turaco</a> are unique among <a href="/wiki/Extant_taxon" class="mw-redirect" title="Extant taxon">extant</a> birds in having functional claws on the thumb and index finger (digit I and II) on the forelimbs as chicks, allowing them to climb trees until the adult plumage with flight feathers develop.<a href="#cite_note-Parallel-416">[412]</a><a href="#cite_note-417">[413]</a> However, several birds have a claw- or nail-like structure hidden under the feathers at the end of the hand digits, notably ostriches, emus, ducks, geese and kiwis.<a href="#cite_note-418">[414]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Squelette_oiseau.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/Squelette_oiseau.svg/180px-Squelette_oiseau.svg.png" decoding="async" width="180" height="240" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/58/Squelette_oiseau.svg/270px-Squelette_oiseau.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/58/Squelette_oiseau.svg/360px-Squelette_oiseau.svg.png 2x" data-file-width="892" data-file-height="1188" /></a><figcaption><a href="/wiki/Pigeon" class="mw-redirect" title="Pigeon">Pigeon</a> skeleton. Number 8 indicates both left and right <a href="#tarsometatarsus">tarsometatarsus</a></figcaption></figure> <dt id="tarsus"><dfn>tarsus </dfn></dt> <dd>Also defined: tarsometatarsus. The third and most conspicuous portion of the bird's leg, from which the toes spring; the foot.<a href="#cite_note-419">[415]</a> In birds, the true <a href="/wiki/Tarsus_(skeleton)" title="Tarsus (skeleton)">tarsus</a> has disappeared, with the proximal tarsals having fused with the <a href="/wiki/Tibia#In_other_animals" title="Tibia">tibia</a>, the centralia having disappeared, and the distal bones having fused with the <a href="/wiki/Metatarsal_bones" title="Metatarsal bones">metatarsals</a> to form a single <a href="/wiki/Tarsometatarsus" title="Tarsometatarsus">tarsometatarsus</a> bone, effectively giving the leg a third segment.<a href="#cite_note-420">[416]</a></dd> <dt id="teleoptiles"><dfn>teleoptiles </dfn></dt> <dd>The collective term for all of the feathers of an adult bird.<a href="#cite_note-Pettingill33-421">[417]</a></dd> <dt id="temporal_canthus"><dfn>temporal canthus </dfn></dt> <dd>The area where the eyelids come together at the posterior corner of the eye (toward the sides of the head), as opposed to the <a href="#nasal_canthus">nasal canthus</a>.<a href="#cite_note-Pettingill10-136">[133]</a></dd> <dt id="tertiaries"><dfn>tertiaries </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather#Tertials" title="Flight feather">Flight feather § Tertials</a></div> <dd>Also, tertials; tertiary feathers; humeral feathers. A type of feather arising in the brachial region, i.e., "proximal to the innermost secondaries", usually growing in a grouping of three to four feathers.<a href="#cite_note-Proctor54-422">[418]</a> They are not considered true <a href="#remiges">remiges</a> as they are not supported by attachment to the corresponding bone—in this case the <a href="/wiki/Humerus" title="Humerus">humerus</a>. These elongated "true" tertials act as a protective cover for all or part of the folded <a href="#primaries">primaries</a> and <a href="#secondaries">secondaries</a>, and do not qualify as flight feathers as such.<a href="#cite_note-Raptors-423">[419]</a> However, many authorities use the term tertials to refer to the shorter, more symmetrical innermost secondaries of passerines (arising from the <a href="/wiki/Olecranon" title="Olecranon">olecranon</a> and performing the same function as true tertials) in an effort to distinguish them from other secondaries. The term humeral is sometimes used for birds such as the albatrosses and pelicans that have a long humerus.<a href="#cite_note-424">[420]</a><a href="#cite_note-425">[421]</a></dd> <dt id="throat"><dfn>throat</dfn></dt> <dd>The triangular area of a bird's external anatomy, typically feathered, located between the <a href="#chin">chin</a> and the upper part of the <a href="#breast">breast</a>.<a href="#cite_note-Vinicombe14-100">[97]</a></dd> <dt id="thigh"><dfn>thigh</dfn></dt> <dd>The <a href="#topography">topographical</a> area between the "knee" and the trunk of the body.<a href="#cite_note-Carnaby11-426">[422]</a></dd> <dt id="tibia"><dfn>tibia </dfn></dt> <dd>The usually feathered part of a bird's leg extending above the foot (<a href="#tarsus">tarsus</a>).<a href="#cite_note-SchoddeMason1999-427">[423]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Mergus_merganser_-Hogganfield_Loch,_Glasgow,_Scotland_-female-8.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Mergus_merganser_-Hogganfield_Loch%2C_Glasgow%2C_Scotland_-female-8.jpg/220px-Mergus_merganser_-Hogganfield_Loch%2C_Glasgow%2C_Scotland_-female-8.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/76/Mergus_merganser_-Hogganfield_Loch%2C_Glasgow%2C_Scotland_-female-8.jpg/330px-Mergus_merganser_-Hogganfield_Loch%2C_Glasgow%2C_Scotland_-female-8.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/76/Mergus_merganser_-Hogganfield_Loch%2C_Glasgow%2C_Scotland_-female-8.jpg/440px-Mergus_merganser_-Hogganfield_Loch%2C_Glasgow%2C_Scotland_-female-8.jpg 2x" data-file-width="1000" data-file-height="750" /></a><figcaption>The sawtooth serrations of a <a href="/wiki/Common_merganser" title="Common merganser">common merganser</a>'s <a href="#tomia">tomia</a> help it to hold tight to its fish prey.</figcaption></figure> <dt id="tomia"><dfn>tomia </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Tomia" title="Beak">Beak § Tomia</a></div> <dd>Singular: tomium. The cutting edges of the <a href="#upper_mandible">upper</a> and <a href="#lower_mandible">lower</a> mandibles.<a href="#cite_note-Campbell598-39">[36]</a> In most birds, these range from rounded to slightly sharp, but some species have evolved structural modifications that allow them to handle their typical food sources better.<a href="#cite_note-Stettenheim-95">[92]</a> <a href="/wiki/Granivorous" class="mw-redirect" title="Granivorous">Granivorous</a> (seed-eating) birds, for example, have ridges in their tomia, which help the bird to slice through a seed's outer <a href="/wiki/Husk" title="Husk">hull</a>.<a href="#cite_note-428">[424]</a> Birds in roughly 30 families have tomia lined with tight bunches of very short bristles along their entire length. Most of these species are either <a href="#insectivores">insectivores</a> (preferring hard-shelled prey) or <a href="/wiki/Snail" title="Snail">snail</a> eaters, and the brush-like projections may help to increase the <a href="/wiki/Coefficient_of_friction" class="mw-redirect" title="Coefficient of friction">coefficient of friction</a> between the mandibles, thereby improving the bird's ability to hold hard prey items.<a href="#cite_note-429">[425]</a> Serrations on <a href="/wiki/Hummingbird" title="Hummingbird">hummingbird</a> bills, found in 23% of all hummingbird genera, may perform a similar function, allowing the birds to effectively hold insect prey. They may also allow shorter-billed hummingbirds to function as <a href="/wiki/Nectar" title="Nectar">nectar</a> thieves, as they can more effectively hold and cut through long or waxy <a href="/wiki/Corolla_(flower)" class="mw-redirect" title="Corolla (flower)">flower corollas</a>.<a href="#cite_note-430">[426]</a> In some cases, the colour of a bird's tomia can help to distinguish between similar species. The <a href="/wiki/Snow_goose" title="Snow goose">snow goose</a>, for example, has a reddish-pink bill with black tomia, while the whole beak of the similar <a href="/wiki/Ross%27s_goose" title="Ross's goose">Ross's goose</a> is pinkish-red, without darker tomia.<a href="#cite_note-431">[427]</a></dd> <dt id="topography"><dfn>topography</dfn></dt> <dd>The mapping of external features of bird anatomy.<a href="#cite_note-Pettingill8-388">[384]</a></dd> <dt id="torpor"><dfn>torpor </dfn></dt> <dd>Also, hypometabolism. An energy-conserving strategy used by some small birds [under 100 g (3.5 oz)] in which they become inactive and unreactive to external stimuli, and reduce their <a href="/wiki/Metabolism" title="Metabolism">metabolism</a> below their normal respiration and heart rate, causing decreases in body temperature by an average of 4–35 °C (39–95 °F). Two types of torpor are recognized. In one type, such as in <a href="/wiki/Hummingbird" title="Hummingbird">hummingbirds</a>, torpor may be entered on a daily basis and last only a few hours; other behaviours, such as foraging, continue during non-torpor periods. For other species, torpor may only be entered during cold conditions or when food becomes limited, but may persist for weeks or even months. The extent of unresponsiveness during torpor can be pronounced. A hummingbird in deep torpor, for example, with a body temperature of 18 °C (64 °F), will not respond to a variety of external stimuli, such as attempts to push it from a perch; only the locking reflex of the feet stops the bird from falling. Torpor has been reported in eight <a href="/wiki/Order_(biology)" title="Order (biology)">orders</a> of birds.<a href="#cite_note-432">[428]</a><a href="#cite_note-433">[429]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="U">U</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=21" title="Edit section: U">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="undertail_coverts"><dfn>undertail coverts </dfn></dt> <dd><a href="#covert_feathers">Covert feathers</a> covering the base of the <a href="#tail">tail</a> on its underside.<a href="#cite_note-Pettingill21-128">[125]</a> Compare: <a href="#uppertail_coverts">uppertail coverts</a>; contrast <a href="#wing_coverts">wing coverts</a>.</dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Underwing.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Underwing.svg/220px-Underwing.svg.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Underwing.svg/330px-Underwing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/66/Underwing.svg/440px-Underwing.svg.png 2x" data-file-width="400" data-file-height="300" /></a><figcaption><a href="#underwing">Underwing</a> of bird showing feather nomenclature: 1 <a href="#axillaries">axillaries</a>, 2 margin (marginal underwing coverts), 3 <a href="#lesser_coverts">lesser underwing coverts</a>, 4 <a href="#median_covert">median underwing coverts</a> (secondary coverts), 5 <a href="#greater_coverts">greater underwing coverts</a> (secondary coverts), 6 carpal joint, 7 lesser underwing primary coverts, 8 greater underwing primary coverts, 9 <a href="#secondaries">secondaries</a>, 10 <a href="#primaries">primaries</a></figcaption></figure> <dt id="underwing"><dfn>underwing </dfn></dt> <dd>The bottom side of a bird's wing; the hidden surface of the wing when it is folded.<a href="#cite_note-434">[430]</a> Compare: <a href="#upperwing">upperwing</a>.</dd> <dt id="upper_mandible"><dfn>upper mandible </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Beak#Mandibles" title="Beak">Beak § Mandibles</a></div> <dd>Also, maxilla. The upper part of a bird's <a href="#bill">bill</a> or beak, roughly corresponding to the upper jaw of mammals, it is supported by a three-pronged <a href="/wiki/Bone" title="Bone">bone</a> called the intermaxillary. The upper prong of this bone is embedded into the forehead, while the two lower prongs attach to the sides of the <a href="/wiki/Skull" title="Skull">skull</a>. At the base of the upper mandible a thin sheet of nasal bones is attached to the skull at the nasofrontal hinge, which gives mobility to the upper mandible, allowing it to move upwards and downwards.<a href="#cite_note-Proctor66-36">[33]</a> The outer surface is covered in a thin, horny sheath of <a href="/wiki/Keratin" title="Keratin">keratin</a> called <a href="#rhamphotheca">rhamphotheca</a><a href="#cite_note-Proctor66-36">[33]</a><a href="#cite_note-Gill148-37">[34]</a> specially called <a href="#rhinotheca">rhinotheca</a> in the upper mandible.<a href="#cite_note-Campbell47-38">[35]</a> Compare: <a href="#lower_mandible">lower mandible</a>.</dd> <dt id="upper_parts"><dfn>upper parts </dfn></dt> <dd>Also, upper-parts and upperparts. The <a href="#topography">topographical</a> areas above the eyes of a bird (generally not including the <a href="#eyestripe">eyestripe</a>, if any) and through all of a bird's upper surface, including the "<a href="#crown">crown</a>, <a href="#mantle">mantle</a>, <a href="#back">back</a>, <a href="#tertials">tertials</a> and <a href="#inner_wing-coverts">inner wing-coverts</a>",<a href="#cite_note-RAOU1991-435">[431]</a> although the term is sometimes used more inclusively, for all features from the bill to the tail.<a href="#cite_note-Wheelock-436">[432]</a> Compare: <a href="#under_parts">under parts</a>.</dd> <dt id="under_parts"><dfn>under parts </dfn></dt> <dd>Also, under-parts; underparts; lower parts; lower-parts; lowerparts. All <a href="#topography">topographical</a> areas on the underside or "under surface" of a bird,<a href="#cite_note-Wheelock-436">[432]</a> i.e., from the <a href="#chin">chin</a> to the underside end of the tail (on the trunk and thus not including the legs). Compare <a href="#upper_parts">upper parts</a>.</dd> <dt id="uppertail_coverts"><dfn>uppertail coverts </dfn></dt> <dd><a href="#covert_feathers">Covert feathers</a> covering the base of the <a href="#tail">tail</a> on its upperside.<a href="#cite_note-Pettingill21-128">[125]</a> Sometimes these coverts are more specialized. The "tail" of a <a href="/wiki/Peacock" class="mw-redirect" title="Peacock">peacock</a> is actually very elongated uppertail coverts.<a href="#cite_note-Mobley295-120">[117]</a> Compare <a href="#undertail_coverts">undertail coverts</a>; contrast <a href="#wing_coverts">wing coverts</a>.</dd> <dt id="upperwing"><dfn>upperwing </dfn></dt> <dd> The top, or upper, side of a bird's wing.<a href="#cite_note-nebraskabirdlib-437">[433]</a> Compare: <a href="#underwing">underwing</a>.</dd> <dt id="uropygial_gland"><dfn>uropygial gland </dfn></dt> <dd>Also, preen gland; oil gland. A gland found at the <a href="#rump">rump</a>, at the base of the <a href="#tail">tail</a> that produces a waxy secretion made up of oils, fatty acids, fats and water that the majority of birds use in daily <a href="#preening">preening</a> of their feathers. Though feathers <a href="#moult">moult</a> periodically, they are inert structures without a nourishment system and would deteriorate rapidly without such application during preening. The applied waxy secretion aids in waterproofing, helps maintain feather moistness to keep them from becoming brittle and maintain flexibility, and is thought to promote the growth of nonpathogenic fungi, to deter feather lice and some forms of keratin-eating fungi and bacteria. The gland, a bilobed structure, is usually surrounded by a tuft of downy feathers that can act like a wick for the secreted oils.<a href="#cite_note-Gill102-438">[434]</a></dd> <dt id="uropygium"><dfn>uropygium</dfn></dt> <dd>See <a href="#rump">rump</a>.</dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="V">V</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=22" title="Edit section: V">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="vagrant"><dfn>vagrant</dfn></dt> <dd>Descriptive of a bird found outside its species' or subspecies' normal migration range or distribution area.<a href="#cite_note-439">[435]</a></dd> <dt id="vane"><dfn>vane </dfn></dt> <dd>Also, vexillum – plural: vexilla. The weblike expanse of flexible barbs, more or less interconnected by the <a href="#hooklets">hooklets</a> of the <a href="#barbules">barbules</a>, extending from each side of the distal part of the feather's shaft known as the <a href="#rachis">rachis</a>. One side of the vane, called the outer vane, overlaps the inner vane side of the feather next to it.<a href="#cite_note-Pettingill32-10">[8]</a></dd> <dt id="vanule"><dfn>vanule</dfn></dt> <dd>The collective term for all of the <a href="#barbules">barbules</a> branching from the <a href="#ramus">ramus</a> of a feather's <a href="#barb">barb</a>.<a href="#cite_note-Chandler252-30">[28]</a></dd> <dt id="vaned_feather"><dfn>vaned feather </dfn></dt> <dd>A classification term for pennaceous feathers (aka contour feathers) that clothe the outside of a bird's body.<a href="#cite_note-Alderfer2012-440">[436]</a> It refers to the <a href="#vane">vaned</a> property of such feathers, i.e., having a flattened weblike expanse of flexible <a href="#barbs">barbs</a>, more or less interconnected by the <a href="#hooklets">hooklets</a> of the <a href="#barbules">barbules</a>, extending from each side of the distal part of the feather's shaft known as the <a href="#rachis">rachis</a>. They make up one of three broad classes of feathers, the others being <a href="#down_feathers">down feathers</a> (which lie underneath vaned feathers, if present), and the hairlike <a href="#filoplumes">filoplumes</a>.<a href="#cite_note-Pettingill32-10">[8]</a></dd> <dt id="vent"><dfn>vent </dfn></dt> <dd>The external opening of the <a href="#cloaca">cloaca</a>.<a href="#cite_note-Kahn2007-441">[437]</a></dd> <dt id="vent_pecking"><dfn>vent pecking</dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Vent_pecking" title="Vent pecking">Vent pecking</a></div> <dd>An <a href="/wiki/Abnormal_behaviour_of_birds_in_captivity" title="Abnormal behaviour of birds in captivity">abnormal behaviour</a> of birds in captivity, performed primarily by commercial egg-laying <a href="/wiki/Chicken" title="Chicken">hens</a>, characterized by pecking damage to the <a href="#cloaca">cloaca</a>, the surrounding skin and underlying tissue.<a href="#cite_note-Sherwin,_2010-442">[438]</a> Vent pecking frequently occurs immediately after an egg has been laid when the cloaca often remains partly everted exposing the <a href="/wiki/Mucosa" class="mw-redirect" title="Mucosa">mucosa</a>.<a href="#cite_note-443">[439]</a></dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="W">W</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=23" title="Edit section: W">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Flickr_-_Rainbirder_-_Bearded_Bellbird_(Procnias_averano)_male_calling.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Flickr_-_Rainbirder_-_Bearded_Bellbird_%28Procnias_averano%29_male_calling.jpg/220px-Flickr_-_Rainbirder_-_Bearded_Bellbird_%28Procnias_averano%29_male_calling.jpg" decoding="async" width="220" height="146" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Flickr_-_Rainbirder_-_Bearded_Bellbird_%28Procnias_averano%29_male_calling.jpg/330px-Flickr_-_Rainbirder_-_Bearded_Bellbird_%28Procnias_averano%29_male_calling.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d4/Flickr_-_Rainbirder_-_Bearded_Bellbird_%28Procnias_averano%29_male_calling.jpg/440px-Flickr_-_Rainbirder_-_Bearded_Bellbird_%28Procnias_averano%29_male_calling.jpg 2x" data-file-width="760" data-file-height="506" /></a><figcaption>An adult male <a href="/wiki/Bearded_bellbird" title="Bearded bellbird">bearded bellbird</a> <a href="#calling">calling</a> in the <a href="/wiki/Arima" title="Arima">Arima</a> Valley of Trinidad. Note the beard-like <a href="#wattles">wattles</a> sprouting from its <a href="#chin">chin</a> and <a href="#throat">throat</a> area, for which the bird is named.</figcaption></figure> <dt id="wattle"><dfn>wattle </dfn></dt> <dd>Also, dewlap; lappet; palearia. Specialized type: rictal wattle. A type of <a href="#caruncle">caruncle</a>, the wattle is a flap or <a href="/wiki/Lobe_(anatomy)" title="Lobe (anatomy)">lobe</a> of flesh, often of a vivid colour, that hangs from the head of some birds, often from the chin or throat.<a href="#cite_note-444">[440]</a><a href="#cite_note-CruickshankCruickshank1976-445">[441]</a> When found at the corner of the mouth, they may be called rictal wattles, such as in <a href="/wiki/Masked_lapwing" title="Masked lapwing">masked lapwings</a>.<a href="#cite_note-Kochan1995-446">[442]</a> Birds with wattles include <a href="/wiki/Turkey_(bird)" title="Turkey (bird)">turkeys</a>, <a href="/wiki/Guineafowl" title="Guineafowl">guineafowls</a>, <a href="/wiki/Northern_cassowary" title="Northern cassowary">northern cassowaries</a>, <a href="/wiki/Black-faced_ibis" title="Black-faced ibis">black-faced ibises</a>, <a href="/wiki/North_Island_k%C5%8Dkako" title="North Island kōkako">North Island kōkakos</a>, <a href="/wiki/Wattled_starling" title="Wattled starling">wattled starlings</a> (males, when in <a href="#nuptial_plumage">nuptial plumage</a>) and male <a href="/wiki/Bearded_bellbird" title="Bearded bellbird">bearded bellbirds</a>, with the last having startling, beard-like wattles.<a href="#cite_note-StarkSclater1900-447">[443]</a><a href="#cite_note-Kricher2015-448">[444]</a></dd> <dt id="whiffling"><dfn>whiffling</dfn></dt> <dd>A flight behaviour in which a bird rapidly descends with a zig-zagging, <a href="/wiki/Slip_(aerodynamic)" class="mw-redirect" title="Slip (aerodynamic)">side-slipping</a> motion. During whiffling, some birds invert the aerodynamic mechanics of their bodies that normally provide <a href="/wiki/Lift_(force)" title="Lift (force)">lift</a>—flying by turning their bodies upside down but with their necks twisted 180 degrees to keep their heads in a normal flying position—resulting in a rapid plummet, before a quick arrest of the fall by resumption of a normal flying orientation.<a href="#cite_note-449">[445]</a><a href="#cite_note-450">[446]</a><a href="#cite_note-Attenborough1998-451">[447]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Pine_Siskin_Female_(10743)-Relic38.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Pine_Siskin_Female_%2810743%29-Relic38.JPG/220px-Pine_Siskin_Female_%2810743%29-Relic38.JPG" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Pine_Siskin_Female_%2810743%29-Relic38.JPG/330px-Pine_Siskin_Female_%2810743%29-Relic38.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9d/Pine_Siskin_Female_%2810743%29-Relic38.JPG/440px-Pine_Siskin_Female_%2810743%29-Relic38.JPG 2x" data-file-width="2911" data-file-height="1940" /></a><figcaption>A female <a href="/wiki/Pine_siskin" title="Pine siskin">pine siskin</a> with white <a href="#wing_bars">wing bars</a>.</figcaption></figure> <dt id="wing_bar"><dfn>wing bar </dfn></dt> <dd>A stripe found on the <a href="#upperwing">upperwing</a> that is created by the contrast of the tips of the primary and secondary coverts.<a href="#cite_note-DunnAlderfer2006-452">[448]</a> This feature may disappear when a bird <a href="#moults">moults</a> and takes on a different seasonal <a href="#plumage">plumage</a>.<a href="#cite_note-Bengal1872-453">[449]</a> Wing bars often occur in pairs.<a href="#cite_note-Floyd2008_498-454">[450]</a> Contrast: <a href="#speculum">speculum</a>.</dd> <dt id="wing_clipping"><dfn>wing clipping </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Wing_clipping" title="Wing clipping">Wing clipping</a></div> <dd>Also, wing trimming. The controversial practice of trimming a bird's <a href="#primaries">primary wing feathers</a> or <a href="#remiges">remiges</a> so that it is not fully flight-capable, until it grows replacement feathers during its next <a href="#moult">moult</a>.<a href="#cite_note-455">[451]</a> If it is performed correctly, it is a painless procedure.<a href="#cite_note-Hess-456">[452]</a> Nevertheless, the practice can cause injury, e.g., <a href="/wiki/Hemorrhaging" class="mw-redirect" title="Hemorrhaging">hemorrhaging</a> as the result of <a href="#blood_feathers">blood feathers</a> being accidentally trimmed.<a href="#cite_note-Speer2015-457">[453]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Chicken_wing.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/Chicken_wing.svg/220px-Chicken_wing.svg.png" decoding="async" width="220" height="155" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/97/Chicken_wing.svg/330px-Chicken_wing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/97/Chicken_wing.svg/440px-Chicken_wing.svg.png 2x" data-file-width="927" data-file-height="653" /></a><figcaption>Topside of a chicken wing showing all major feather groups</figcaption></figure> <dt id="wing_coverts"><dfn>wing coverts </dfn></dt> <dd>Also defined: upperwing coverts; underwing coverts; secondary coverts; primary coverts; greater (primary-/secondary-) coverts; median (primary-/secondary-) coverts; lesser (primary-/secondary-) coverts (the last being also called bow coverts). <a href="#covert_feathers">Covert feathers</a> found on a bird's <a href="#wing">wing</a>. There are a number of classes and subclasses. The <a href="#upperwing">upperwing</a> coverts fall into two groups: those on the <a href="#inner_wing">inner wing</a>, which overlay the <a href="/wiki/Flight_feather#Secondaries" title="Flight feather">secondary flight feathers</a>, are known as the secondary coverts, and those on the <a href="#outer_wing">outer wing</a>, which overlay the <a href="/wiki/Flight_feather#Primaries" title="Flight feather">primary flight feathers</a>, are known as the primary coverts. Within each group, the feathers form a number of rows. The feathers of the outermost, largest, row are termed greater (primary-/secondary-) coverts; those in the next row are the median (primary-/secondary-) coverts, and any remaining rows are termed lesser (primary-/secondary-) coverts. The <a href="#underwing">underwing</a> has corresponding sets of coverts (the names upperwing coverts and underwing coverts are used to distinguish the corresponding sets). In addition, the front edge of the wing is covered with a group of feathers called the marginal coverts. Within each group of wing coverts, the rows of feathers overlap each other like <a href="/wiki/Roof_tile" class="mw-redirect" title="Roof tile">roof tiles</a> (the greater coverts are overlain by the median coverts, which in turn are overlain by the outermost row of lesser coverts, and so on).<a href="#cite_note-Pettingill16-21-19">[17]</a> See also: <a href="#axillaries">axillaries</a>; <a href="#ear_coverts">ear coverts</a>; <a href="#wing_lining">wing lining</a> (marginal coverts).</dd> <dt id="wing_formula"><dfn>wing formula </dfn></dt> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Flight_feather#Wing_formula" title="Flight feather">Flight feather § Wing formula</a></div> <dd>A <a href="/wiki/Mathematical" class="mw-redirect" title="Mathematical">mathematical</a> classification of the shape of the distal end of a bird's wing. It can be used to help distinguish between species with similar <a href="#plumages">plumages</a>, and thus is particularly useful for those who <a href="/wiki/Bird_ringing" title="Bird ringing">ring (band)</a> birds. To determine a bird's wing formula, the exposed distance between the tip of the most distal <a href="#primary">primary</a>, and the tip of its <a href="#greater_covert">greater covert</a> (the longest of the feathers that cover and protect the shaft of that primary), is measured in millimetres. In some cases, this results in a positive number (e.g., the primary extends beyond its greater covert), while in other cases it is a negative number (e.g., the primary is completely covered by the greater covert, as happens in some passerine species). Next, the longest primary feather is identified, and the differences in millimetres is measured between: i) the length of that primary; ii) that of all of the remaining primaries; and iii) of the longest secondary. If any primary shows a notch or <a href="#emargination">emargination</a>, this is noted, and the distance between the feather's tip and any notch is measured, as is the depth of the notch. All distance measurements are made with the bird's wing closed, so as to maintain the relative positions of the feathers. While there can be considerable variation across members of a species—and while the results are obviously impacted by the effects of <a href="#moult">moult</a> and feather regeneration—even very closely related species show clear differences in their wing formulae.<a href="#cite_note-Campbell656-20">[18]</a></dd> <dt id="wing_lining"><dfn>wing lining </dfn></dt> <dd>Also, marginal coverts. A grouping of very soft <a href="#covert_feathers">covert feathers</a> lining the anterior edge of the underside of the wing. Though the wing lining is composed of rows of these feathers, they are smooth in appearance such that it is often impossible to see the demarcation of the rows solely by eye.<a href="#cite_note-Campbell60-28">[26]</a></dd> <dt id="wings"><dfn>wings </dfn></dt> <dd>Wing types defined: elliptical; high speed; high aspect ratio; soaring. The bird's <a href="/wiki/Forelimb" title="Forelimb">forelimbs</a> that are the key to flight. Each wing has a central axis, composed of three limb bones: the <a href="/wiki/Humerus" title="Humerus">humerus</a>, <a href="/wiki/Ulna" title="Ulna">ulna</a> and <a href="/wiki/Radius_(bone)" title="Radius (bone)">radius</a>. The hand, or manus, which ancestrally was composed of five digits, is reduced to three digits (digit II, III and IV or I, II, III depending on the scheme followed<a href="#cite_note-458">[454]</a>), which serves as an anchor for the <a href="#primaries">primaries</a>, one of two groups of <a href="/wiki/Flight_feather" title="Flight feather">flight feathers</a> responsible for the wing's airfoil shape. The other set of flight feathers, behind the carpal joint on the ulna, are called the <a href="#secondaries">secondaries</a>. The remaining feathers on the wing are known as <a href="#coverts">coverts</a>, of which there are three sets. The wing sometimes has vestigial claws. In most species these are lost by the time the bird is adult (such as the highly visible ones used for active climbing by <a href="/wiki/Hoatzin" title="Hoatzin">hoatzin</a> chicks), but claws are retained into adulthood by the <a href="/wiki/Secretarybird" title="Secretarybird">secretarybird</a>, <a href="/wiki/Screamer" title="Screamer">screamers</a>, <a href="/wiki/Heliornithidae" title="Heliornithidae">finfoots</a>, <a href="/wiki/Ostrich" title="Ostrich">ostriches</a>, several <a href="/wiki/Swift_(bird)" title="Swift (bird)">swifts</a> and numerous others, as a local trait, in a few specimens. Bird wings are generally grouped into four types: i) elliptical wings—short, rounded and having a low aspect ratio, they allow for tight maneuvering in confined spaces such as might be found in dense vegetation. They are common in forest raptors, many migratory species of <a href="/wiki/Passerine" title="Passerine">passerines</a>, and in species such as <a href="/wiki/Pheasant" title="Pheasant">pheasants</a> and <a href="/wiki/Partridge" title="Partridge">partridges</a> that use a rapid take-off to evade predators. ii) High speed wings—short, pointed wings that, when combined with a heavy wing loading and rapid wingbeats, provide an energetically expensive high speed, as used by the bird with the fastest wing speed, the <a href="/wiki/Peregrine_falcon" title="Peregrine falcon">peregrine falcon</a>. Most <a href="/wiki/Duck" title="Duck">ducks</a> and <a href="/wiki/Auk" title="Auk">auks</a> have this type of wing but use the configuration for a different purpose, to "fly" underwater. iii) High aspect ratio wings—typified by low wing loading and being far longer than they are wide, they are used for slower flight, which may take the form of almost hovering (as used by <a href="/wiki/Kestrel" title="Kestrel">kestrels</a>, <a href="/wiki/Tern" title="Tern">terns</a> and <a href="/wiki/Nightjar" title="Nightjar">nightjars</a>), or in soaring and <a href="/wiki/Gliding" title="Gliding">gliding</a> flight, particularly the <a href="/wiki/Dynamic_soaring" title="Dynamic soaring">dynamic soaring</a> used by <a href="/wiki/Seabird" title="Seabird">seabirds</a>, which takes advantage of wind speed variation at different altitudes (<a href="/wiki/Wind_shear" title="Wind shear">wind shear</a>) above ocean waves to provide lift. iv) Soaring wings with deep slots—common in larger species of inland birds, such as <a href="/wiki/Eagle" title="Eagle">eagles</a>, <a href="/wiki/Vulture" title="Vulture">vultures</a>, <a href="/wiki/Pelican" title="Pelican">pelicans</a> and <a href="/wiki/Stork" title="Stork">storks</a>. The slots at the end of the wings, between the primaries, reduce the <a href="/wiki/Induced_drag" class="mw-redirect" title="Induced drag">induced drag</a> and <a href="/wiki/Wingtip_vortices" title="Wingtip vortices">wingtip vortices</a>, while the shorter size of the wings aids in takeoff (high aspect ratio wings require a long <a href="/wiki/Taxiing" title="Taxiing">taxi</a> to get airborne).<a href="#cite_note-459">[455]</a></dd> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Bee_hummingbird_(Mellisuga_helenae)_adult_male_in_flight-cropped.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Bee_hummingbird_%28Mellisuga_helenae%29_adult_male_in_flight-cropped.jpg/220px-Bee_hummingbird_%28Mellisuga_helenae%29_adult_male_in_flight-cropped.jpg" decoding="async" width="220" height="217" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/da/Bee_hummingbird_%28Mellisuga_helenae%29_adult_male_in_flight-cropped.jpg/330px-Bee_hummingbird_%28Mellisuga_helenae%29_adult_male_in_flight-cropped.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/da/Bee_hummingbird_%28Mellisuga_helenae%29_adult_male_in_flight-cropped.jpg/440px-Bee_hummingbird_%28Mellisuga_helenae%29_adult_male_in_flight-cropped.jpg 2x" data-file-width="2334" data-file-height="2301" /></a><figcaption>Male <a href="/wiki/Bee_hummingbird" title="Bee hummingbird">bee hummingbird</a> in flight; the bird with the smallest <a href="#wingspan">wingspan</a> at 6.6 cm (2.6 in).</figcaption></figure> <dt id="wingspan"><dfn>wingspan </dfn></dt> <dd>The distance between each of the tips of the fully extended <a href="#wings">wings</a>.<a href="#cite_note-birdacademy-460">[456]</a> The living bird species with the largest wingspan is the <a href="/wiki/Wandering_albatross" class="mw-redirect" title="Wandering albatross">wandering albatross</a>, typically ranging from 2.5 to 3.5 m (8 ft 2 in to 11 ft 6 in).<a href="#cite_note-Elphick2007-461">[457]</a> In contrast, the living bird species with the smallest wingspan is the <a href="/wiki/Bee_hummingbird" title="Bee hummingbird">bee hummingbird</a> (also the smallest bird overall) with a wingspan of just 6.6 cm (2.6 in).<a href="#cite_note-Williams94-462">[458]</a></dd> <dt id="winter_plumage"><dfn>winter plumage</dfn></dt> <dd>See <a href="#basic_plumage">basic plumage</a>.</dd> </dl> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="Z">Z</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=24" title="Edit section: Z">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1228772891"> <dl class="glossary"> <dt id="zygodactylous"><dfn>zygodactylous</dfn></dt> <dd>Also, yoke-toed. Also defined: heterodactylous. Descriptive of tetradactyl (four-toed) birds in which the architecture of the foot consists of two toes projecting forward and two toes projecting backward, such as in <a href="/wiki/Parrot" title="Parrot">parrots</a>, <a href="/wiki/Woodpecker" title="Woodpecker">woodpeckers</a> and <a href="/wiki/Cuckoo" title="Cuckoo">cuckoos</a>. In most birds with zygodactylous feet, the forward projecting toes are the second and third toes and the backward projecting toes are the fourth toe and <a href="#hallux">hallux</a>. However, in <a href="/wiki/Trogon" title="Trogon">trogons</a> alone, the third and fourth toes are in front, and the second and hallux are behind. This arrangement is sometimes separately designated, and termed heterodactylous.<a href="#cite_note-Gill59–61-22">[20]</a><a href="#cite_note-463">[459]</a></dd> </dl> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=25" title="Edit section: See also">edit</a>]</div> <ul><li><a href="/wiki/Glossary_of_dinosaur_anatomy" title="Glossary of dinosaur anatomy">Glossary of dinosaur anatomy</a></li></ul> <div class="noprint" style="text-align:center;"><div role="navigation" id="toc" class="toc plainlinks" aria-labelledby="tocheading" style="margin-left:auto;margin-right:auto; text-align:left;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><div class="hlist"> <div id="toctitle" class="toctitle" style="text-align:center;display:inline-block;">Contents: </div> <div style="margin:auto; display:inline-block;"> <ul><li><a href="#top">Top</a></li> <li><a href="#A">A</a></li> <li><a href="#B">B</a></li> <li><a href="#C">C</a></li> <li><a href="#D">D</a></li> <li><a href="#E">E</a></li> <li><a href="#F">F</a></li> <li><a href="#G">G</a></li> <li><a href="#H">H</a></li> <li><a href="#I">I</a></li> <li><a href="#J">J</a></li> <li><a href="#K">K</a></li> <li><a href="#L">L</a></li> <li><a href="#M">M</a></li> <li><a href="#N">N</a></li> <li><a href="#O">O</a></li> <li><a href="#P">P</a></li> <li><a href="#Q">Q</a></li> <li><a href="#R">R</a></li> <li><a href="#S">S</a></li> <li><a href="#T">T</a></li> <li><a href="#U">U</a></li> <li><a href="#V">V</a></li> <li><a href="#W">W</a></li> <li><a href="#Y">Y</a></li> <li><a href="#Z">Z</a></li> <li><a href="#Explanatory_footnotes">Explanatory footnotes </a></li> <li><a href="#Citations">Citations </a></li> <li><a href="#Bibliography">Bibliography </a></li></ul> </div></div></div></div> <div class="mw-heading mw-heading2"><h2 id="Explanatory_footnotes">Explanatory footnotes</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=26" title="Edit section: Explanatory footnotes">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-5"><a href="#cite_ref-5">^</a> Ornithologists from the <a href="/wiki/American_Museum_of_Natural_History" title="American Museum of Natural History">American Museum of Natural History</a> suggested in a 2016 article published in <a href="/wiki/PLOS_ONE" class="mw-redirect" title="PLOS ONE">PLOS ONE</a>, that the use of the "<a href="/wiki/Species_problem" class="mw-redirect" title="Species problem">biological species concept</a>"—classifying a grouping of birds as making up a single <a href="/wiki/Species" title="Species">species</a> by their ability to breed—is outdated and should be discarded in favour of a species' model that looks to similarity and dissimilarity in characteristics such as plumage, pattern and colouring to individuate bird species. Under such a model, it is suggested that there are ±18,000 individual living bird species in the world as of 2016.<a href="#cite_note-4">[4]</a> </li> <li id="cite_note-9"><a href="#cite_ref-9">^</a> <a href="/wiki/Emu" title="Emu">Emus</a> and <a href="/wiki/Cassowaries" class="mw-redirect" title="Cassowaries">cassowaries</a> are an exception in that their <a href="#afterfeathers">afterfeathers</a> are neither downy nor diminutive in relation to the vanes, but are comparable in size to them; such feathers are thus sometimes referred to as being "double plumed". The feathers of <a href="/wiki/Ostrich" title="Ostrich">ostrich</a> and <a href="/wiki/Rhea_(bird)" title="Rhea (bird)">rhea</a>, also flightless birds, are by contrast "soft and filmy" in makeup, lacking any <a href="#barbules">barbules</a> to add the stiffness needed in working <a href="#flight_feathers">flight feathers</a>.<a href="#cite_note-Roots16-8">[7]</a> </li> <li id="cite_note-34"><a href="#cite_ref-34">^</a> Birds that undergo a second, non-breeding season moult (third moult overall) include: <a href="/wiki/Lagopus" title="Lagopus">ptarmigans</a> (Lagopus) (in the summer); <a href="/wiki/Long-tailed_duck" title="Long-tailed duck">long-tailed duck</a> (Clangula hyemalis) (in the winter); <a href="/wiki/Ruff_(bird)" title="Ruff (bird)">ruff</a> (Philomachus pugnax) (in the late winter or early spring); and may occur in other members of the <a href="/wiki/Sandpiper" title="Sandpiper">sandpiper</a> (Scolopacidae) family.<a href="#cite_note-Pettingill189-192-33">[31]</a> </li> <li id="cite_note-215"><a href="#cite_ref-215">^</a> In relation to flanks being defined as under parts, in the treatise Ornithology in Laboratory and Field, the author states: "[a]lthough technically the sides of the body belong to both the <a href="#upper_parts">upper parts</a> and the <a href="#lower_parts">lower parts</a>, the imaginary line separating the two surfaces is so high on the trunk that the sides of the body are generally considered under parts only."<a href="#cite_note-Pettingill9-99">[96]</a> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Citations">Citations</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=27" title="Edit section: Citations">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFPrum2008" class="citation journal cs1">Prum, Richard O. Prum (19 December 2008). "Who's Your Daddy?". Science. 322 (5909): 1799–1800. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1126%2Fscience.1168808">10.1126/science.1168808</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/19095929">19095929</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:206517571">206517571</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Science&rft.atitle=Who%27s+Your+Daddy%3F&rft.volume=322&rft.issue=5909&rft.pages=1799-1800&rft.date=2008-12-19&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A206517571%23id-name%3DS2CID&rft_id=info%3Apmid%2F19095929&rft_id=info%3Adoi%2F10.1126%2Fscience.1168808&rft.aulast=Prum&rft.aufirst=Richard+O.+Prum&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> (in English) <style data-mw-deduplicate="TemplateStyles:r920966791">.mw-parser-output span.smallcaps{font-variant:small-caps}.mw-parser-output span.smallcaps-smaller{font-size:85%}</style>Gill, F, D Donsker, and P Rasmussen (Eds). 2024. IOC World Bird List (v 14.1). <a rel="nofollow" class="external free" href="https://www.worldbirdnames.org">https://www.worldbirdnames.org</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20201004142729/http://www.worldbirdnames.org/">Archived</a> 2020-10-04 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> </li> <li id="cite_note-Newton2003-3"><a href="#cite_ref-Newton2003_3-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNewton2003" class="citation book cs1">Newton, Ian (2003). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=E33oSw6j8UsC&pg=PA93">The Speciation and Biogeography of Birds</a>. Gulf Professional Publishing. p. 93. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-517375-9" title="Special:BookSources/978-0-12-517375-9"><bdi>978-0-12-517375-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Speciation+and+Biogeography+of+Birds&rft.pages=93&rft.pub=Gulf+Professional+Publishing&rft.date=2003&rft.isbn=978-0-12-517375-9&rft.aulast=Newton&rft.aufirst=Ian&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DE33oSw6j8UsC%26pg%3DPA93&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-4"><a href="#cite_ref-4">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWaters2016" class="citation web cs1">Waters, Hannah (December 15, 2016). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20161221071917/http://www.audubon.org/news/new-study-doubles-worlds-number-bird-species-redefining-species">"New Study Doubles the World's Number of Bird Species By Redefining 'Species'"</a>. National Audubon Society. Archived from <a rel="nofollow" class="external text" href="http://www.audubon.org/news/new-study-doubles-worlds-number-bird-species-redefining-species">the original</a> on December 21, 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=New+Study+Doubles+the+World%27s+Number+of+Bird+Species+By+Redefining+%27Species%27&rft.pub=National+Audubon+Society&rft.date=2016-12-15&rft.aulast=Waters&rft.aufirst=Hannah&rft_id=http%3A%2F%2Fwww.audubon.org%2Fnews%2Fnew-study-doubles-worlds-number-bird-species-redefining-species&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-6"><a href="#cite_ref-6">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=tFYKAQAAMAAJ&pg=PA166">Encyclopaedia perthensis, or, Universal dictionary of the arts, sciences, literature, etc</a>. Edinburgh: John Brown. 1816. p. 166.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Encyclopaedia+perthensis%2C+or%2C+Universal+dictionary+of+the+arts%2C+sciences%2C+literature%2C+etc.&rft.place=Edinburgh&rft.pages=166&rft.pub=John+Brown&rft.date=1816&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DtFYKAQAAMAAJ%26pg%3DPA166&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Weaver12-7">^ <a href="#cite_ref-Weaver12_7-0">a</a> <a href="#cite_ref-Weaver12_7-1">b</a> <a href="#cite_ref-Weaver12_7-2">c</a> <a href="#CITEREFWeaver1981">Weaver 1981</a>, p. 12 </li> <li id="cite_note-Roots16-8"><a href="#cite_ref-Roots16_8-0">^</a> <a href="#CITEREFRoots2006">Roots 2006</a>, p. 16 </li> <li id="cite_note-Pettingill32-10">^ <a href="#cite_ref-Pettingill32_10-0">a</a> <a href="#cite_ref-Pettingill32_10-1">b</a> <a href="#cite_ref-Pettingill32_10-2">c</a> <a href="#cite_ref-Pettingill32_10-3">d</a> <a href="#cite_ref-Pettingill32_10-4">e</a> <a href="#cite_ref-Pettingill32_10-5">f</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 32 </li> <li id="cite_note-MANDAL2012-11"><a href="#cite_ref-MANDAL2012_11-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMandal2012" class="citation book cs1">Mandal, Fatik Baran (2012). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=FF-LDWalcqEC&pg=PA188">Textbook of Animal Behavior</a>. New Delhi: PHI Learning Pvt. Ltd. p. 188. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-81-203-4519-5" title="Special:BookSources/978-81-203-4519-5"><bdi>978-81-203-4519-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Textbook+of+Animal+Behavior&rft.place=New+Delhi&rft.pages=188&rft.pub=PHI+Learning+Pvt.+Ltd.&rft.date=2012&rft.isbn=978-81-203-4519-5&rft.aulast=Mandal&rft.aufirst=Fatik+Baran&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DFF-LDWalcqEC%26pg%3DPA188&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Humphrey–Parks-12">^ <a href="#cite_ref-Humphrey–Parks_12-0">a</a> <a href="#cite_ref-Humphrey–Parks_12-1">b</a> <a href="#cite_ref-Humphrey–Parks_12-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHumphreyParkes1959" class="citation magazine cs1">Humphrey, Philip S.; Parkes, Kenneth C. (January 1959). "An Approach to the Study of Molts and Plumage". The Auk. Vol. 76, no. 1. pp. 1–31. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F4081839">10.2307/4081839</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/4081839">4081839</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Auk&rft.atitle=An+Approach+to+the+Study+of+Molts+and+Plumage&rft.volume=76&rft.issue=1&rft.pages=1-31&rft.date=1959-01&rft_id=info%3Adoi%2F10.2307%2F4081839&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F4081839%23id-name%3DJSTOR&rft.aulast=Humphrey&rft.aufirst=Philip+S.&rft.au=Parkes%2C+Kenneth+C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-SummersCrespi2013-13">^ <a href="#cite_ref-SummersCrespi2013_13-0">a</a> <a href="#cite_ref-SummersCrespi2013_13-1">b</a> <a href="#cite_ref-SummersCrespi2013_13-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSummersCrespi2013" class="citation book cs1">Summers, Kyle; Crespi, Bernard (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=j39rQ9yfwrwC&pg=PT192">Human Social Evolution: The Foundational Works of Richard D. Alexander</a>. Oxford University Press. p. 192. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-933963-1" title="Special:BookSources/978-0-19-933963-1"><bdi>978-0-19-933963-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Human+Social+Evolution%3A+The+Foundational+Works+of+Richard+D.+Alexander&rft.pages=192&rft.pub=Oxford+University+Press&rft.date=2013&rft.isbn=978-0-19-933963-1&rft.aulast=Summers&rft.aufirst=Kyle&rft.au=Crespi%2C+Bernard&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dj39rQ9yfwrwC%26pg%3DPT192&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Howell2014-14"><a href="#cite_ref-Howell2014_14-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHowell2014" class="citation book cs1">Howell, Steve N. G. (2014). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=eQU-BAAAQBAJ&pg=PA8">Peterson Reference Guide to Molt in North American Birds</a>. Houghton Mifflin Harcourt. p. 8. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-547-48769-4" title="Special:BookSources/978-0-547-48769-4"><bdi>978-0-547-48769-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Peterson+Reference+Guide+to+Molt+in+North+American+Birds&rft.pages=8&rft.pub=Houghton+Mifflin+Harcourt&rft.date=2014&rft.isbn=978-0-547-48769-4&rft.aulast=Howell&rft.aufirst=Steve+N.+G.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DeQU-BAAAQBAJ%26pg%3DPA8&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Johnston2013-15">^ <a href="#cite_ref-Johnston2013_15-0">a</a> <a href="#cite_ref-Johnston2013_15-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJohnston2013" class="citation book cs1">Johnston, Richard (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=riYBCAAAQBAJ&pg=PA34">Current Ornithology</a>. Springer Science & Business Media. p. 34. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4615-6781-3" title="Special:BookSources/978-1-4615-6781-3"><bdi>978-1-4615-6781-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Current+Ornithology&rft.pages=34&rft.pub=Springer+Science+%26+Business+Media&rft.date=2013&rft.isbn=978-1-4615-6781-3&rft.aulast=Johnston&rft.aufirst=Richard&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DriYBCAAAQBAJ%26pg%3DPA34&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Urfi2011-16">^ <a href="#cite_ref-Urfi2011_16-0">a</a> <a href="#cite_ref-Urfi2011_16-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFUrfi2011" class="citation book cs1">Urfi, A. J. (2011). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=_9tczTapYXMC&pg=PA88">The Painted Stork: Ecology and Conservation</a>. Springer Science & Business Media. p. 88. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4419-8468-5" title="Special:BookSources/978-1-4419-8468-5"><bdi>978-1-4419-8468-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Painted+Stork%3A+Ecology+and+Conservation&rft.pages=88&rft.pub=Springer+Science+%26+Business+Media&rft.date=2011&rft.isbn=978-1-4419-8468-5&rft.aulast=Urfi&rft.aufirst=A.+J.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D_9tczTapYXMC%26pg%3DPA88&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Scott2008-17"><a href="#cite_ref-Scott2008_17-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFScott2008" class="citation book cs1">Scott, Lynnette (2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=FpAOAQAAMAAJ">Wildlife Rehabilitation</a>. National Wildlife Rehabilitators Association. p. 50. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-931439-23-7" title="Special:BookSources/978-1-931439-23-7"><bdi>978-1-931439-23-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Wildlife+Rehabilitation&rft.pages=50&rft.pub=National+Wildlife+Rehabilitators+Association&rft.date=2008&rft.isbn=978-1-931439-23-7&rft.aulast=Scott&rft.aufirst=Lynnette&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DFpAOAQAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill371-18">^ <a href="#cite_ref-Pettingill371_18-0">a</a> <a href="#cite_ref-Pettingill371_18-1">b</a> <a href="#cite_ref-Pettingill371_18-2">c</a> <a href="#cite_ref-Pettingill371_18-3">d</a> <a href="#cite_ref-Pettingill371_18-4">e</a> <a href="#cite_ref-Pettingill371_18-5">f</a> <a href="#CITEREFPettingill2013">Pettingill 2013</a>, p. 371 </li> <li id="cite_note-Pettingill16-21-19">^ <a href="#cite_ref-Pettingill16-21_19-0">a</a> <a href="#cite_ref-Pettingill16-21_19-1">b</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, pp. 16–21 </li> <li id="cite_note-Campbell656-20">^ <a href="#cite_ref-Campbell656_20-0">a</a> <a href="#cite_ref-Campbell656_20-1">b</a> <a href="#cite_ref-Campbell656_20-2">c</a> <a href="#cite_ref-Campbell656_20-3">d</a> <a href="#cite_ref-Campbell656_20-4">e</a> <a href="#cite_ref-Campbell656_20-5">f</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 656 </li> <li id="cite_note-Pettingill187-21"><a href="#cite_ref-Pettingill187_21-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 187 </li> <li id="cite_note-Gill59–61-22">^ <a href="#cite_ref-Gill59–61_22-0">a</a> <a href="#cite_ref-Gill59–61_22-1">b</a> <a href="#CITEREFGill1995">Gill 1995</a>, pp. 59–61 </li> <li id="cite_note-Osborn-23"><a href="#cite_ref-Osborn_23-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOsborn1998" class="citation magazine cs1">Osborn, Sophie A. H. (September 1998). <a rel="nofollow" class="external text" href="https://sora.unm.edu/sites/default/files/journals/wilson/v110n03/p0423-p0425.pdf">"Anting by an American Dipper (Cinclus mexicanus)"</a> (PDF). <a href="/wiki/The_Wilson_Bulletin" class="mw-redirect" title="The Wilson Bulletin">The Wilson Bulletin</a>. Vol. 110, no. 3. pp. 423–425. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20191114230458/https://sora.unm.edu/sites/default/files/journals/wilson/v110n03/p0423-p0425.pdf">Archived</a> (PDF) from the original on 2019-11-14. Retrieved 2017-01-22.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Wilson+Bulletin&rft.atitle=Anting+by+an+American+Dipper+%28Cinclus+mexicanus%29&rft.volume=110&rft.issue=3&rft.pages=423-425&rft.date=1998-09&rft.aulast=Osborn&rft.aufirst=Sophie+A.+H.&rft_id=https%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fwilson%2Fv110n03%2Fp0423-p0425.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-AlderferDunn2007-24"><a href="#cite_ref-AlderferDunn2007_24-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAlderferDunn2007" class="citation book cs1">Alderfer, Jonathan K.; Dunn, Jon (January 2007). <a rel="nofollow" class="external text" href="https://archive.org/details/nationalgeograph00jona">National Geographic Birding Essentials: All the Tools, Techniques, and Tips You Need to Begin and Become a Better Birder</a>. National Geographic. p. <a rel="nofollow" class="external text" href="https://archive.org/details/nationalgeograph00jona/page/216">216</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4262-0135-6" title="Special:BookSources/978-1-4262-0135-6"><bdi>978-1-4262-0135-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=National+Geographic+Birding+Essentials%3A+All+the+Tools%2C+Techniques%2C+and+Tips+You+Need+to+Begin+and+Become+a+Better+Birder&rft.pages=216&rft.pub=National+Geographic&rft.date=2007-01&rft.isbn=978-1-4262-0135-6&rft.aulast=Alderfer&rft.aufirst=Jonathan+K.&rft.au=Dunn%2C+Jon&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fnationalgeograph00jona&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Proctor98-25">^ <a href="#cite_ref-Proctor98_25-0">a</a> <a href="#cite_ref-Proctor98_25-1">b</a> <a href="#CITEREFProctorLynch1998">Proctor & Lynch 1998</a>, p. 98 </li> <li id="cite_note-UlmerHaupt1962-26"><a href="#cite_ref-UlmerHaupt1962_26-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFUlmerHauptHicks1962" class="citation book cs1">Ulmer, Martin John; Haupt, Robert E.; Hicks, Ellis A. (1962). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Xno_AAAAYAAJ">Comparative Chordate Anatomy: A Laboratory Manual</a>. Harper & Row. p. 169.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Comparative+Chordate+Anatomy%3A+A+Laboratory+Manual&rft.pages=169&rft.pub=Harper+%26+Row&rft.date=1962&rft.aulast=Ulmer&rft.aufirst=Martin+John&rft.au=Haupt%2C+Robert+E.&rft.au=Hicks%2C+Ellis+A.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DXno_AAAAYAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-27"><a href="#cite_ref-27">^</a> <a href="#CITEREFNewton,_et_al.1899">Newton, et al. 1899</a>, p. 25 </li> <li id="cite_note-Campbell60-28">^ <a href="#cite_ref-Campbell60_28-0">a</a> <a href="#cite_ref-Campbell60_28-1">b</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 60 </li> <li id="cite_note-Vinicombe15-29">^ <a href="#cite_ref-Vinicombe15_29-0">a</a> <a href="#cite_ref-Vinicombe15_29-1">b</a> <a href="#cite_ref-Vinicombe15_29-2">c</a> <a href="#cite_ref-Vinicombe15_29-3">d</a> <a href="#cite_ref-Vinicombe15_29-4">e</a> <a href="#cite_ref-Vinicombe15_29-5">f</a> <a href="#cite_ref-Vinicombe15_29-6">g</a> <a href="#CITEREFVinicombe2014">Vinicombe 2014</a>, p. 15 </li> <li id="cite_note-Chandler252-30">^ <a href="#cite_ref-Chandler252_30-0">a</a> <a href="#cite_ref-Chandler252_30-1">b</a> <a href="#CITEREFChandler1916">Chandler 1916</a>, p. 252 </li> <li id="cite_note-Pettingill32-33-31">^ <a href="#cite_ref-Pettingill32-33_31-0">a</a> <a href="#cite_ref-Pettingill32-33_31-1">b</a> <a href="#cite_ref-Pettingill32-33_31-2">c</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, pp. 32–33 </li> <li id="cite_note-Allen1951-32"><a href="#cite_ref-Allen1951_32-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAllen1951" class="citation book cs1">Allen, Elsa Guerdrum (1951). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=T4UpAQAAMAAJ">The History of American Ornithology Before Audubon</a>. Russell & Russell. p. 458.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+History+of+American+Ornithology+Before+Audubon&rft.pages=458&rft.pub=Russell+%26+Russell&rft.date=1951&rft.aulast=Allen&rft.aufirst=Elsa+Guerdrum&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DT4UpAQAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill189-192-33">^ <a href="#cite_ref-Pettingill189-192_33-0">a</a> <a href="#cite_ref-Pettingill189-192_33-1">b</a> <a href="#cite_ref-Pettingill189-192_33-2">c</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, pp. 189–192 </li> <li id="cite_note-Coues-35">^ <a href="#cite_ref-Coues_35-0">a</a> <a href="#cite_ref-Coues_35-1">b</a> <a href="#CITEREFCoues1890">Coues 1890</a>, p. 198 </li> <li id="cite_note-Proctor66-36">^ <a href="#cite_ref-Proctor66_36-0">a</a> <a href="#cite_ref-Proctor66_36-1">b</a> <a href="#cite_ref-Proctor66_36-2">c</a> <a href="#cite_ref-Proctor66_36-3">d</a> <a href="#cite_ref-Proctor66_36-4">e</a> <a href="#cite_ref-Proctor66_36-5">f</a> <a href="#cite_ref-Proctor66_36-6">g</a> <a href="#cite_ref-Proctor66_36-7">h</a> <a href="#CITEREFProctorLynch1998">Proctor & Lynch 1998</a>, p. 66 </li> <li id="cite_note-Gill148-37">^ <a href="#cite_ref-Gill148_37-0">a</a> <a href="#cite_ref-Gill148_37-1">b</a> <a href="#cite_ref-Gill148_37-2">c</a> <a href="#cite_ref-Gill148_37-3">d</a> <a href="#cite_ref-Gill148_37-4">e</a> <a href="#cite_ref-Gill148_37-5">f</a> <a href="#cite_ref-Gill148_37-6">g</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 148 </li> <li id="cite_note-Campbell47-38">^ <a href="#cite_ref-Campbell47_38-0">a</a> <a href="#cite_ref-Campbell47_38-1">b</a> <a href="#cite_ref-Campbell47_38-2">c</a> <a href="#cite_ref-Campbell47_38-3">d</a> <a href="#cite_ref-Campbell47_38-4">e</a> <a href="#cite_ref-Campbell47_38-5">f</a> <a href="#cite_ref-Campbell47_38-6">g</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 47 </li> <li id="cite_note-Campbell598-39">^ <a href="#cite_ref-Campbell598_39-0">a</a> <a href="#cite_ref-Campbell598_39-1">b</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 598 </li> <li id="cite_note-Campbell375-40">^ <a href="#cite_ref-Campbell375_40-0">a</a> <a href="#cite_ref-Campbell375_40-1">b</a> <a href="#cite_ref-Campbell375_40-2">c</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 375 </li> <li id="cite_note-Partington-41"><a href="#cite_ref-Partington_41-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPartington1835" class="citation book cs1">Partington, Charles Frederick (1835). <a rel="nofollow" class="external text" href="https://archive.org/details/britishcyclopd02partrich">The British cyclopæedia of natural history: combining a scientific classification of animals, plants, and minerals</a>. Orr & Smith. p. <a rel="nofollow" class="external text" href="https://archive.org/details/britishcyclopd02partrich/page/417">417</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+British+cyclop%C3%A6edia+of+natural+history%3A+combining+a+scientific+classification+of+animals%2C+plants%2C+and+minerals&rft.pages=417&rft.pub=Orr+%26+Smith&rft.date=1835&rft.aulast=Partington&rft.aufirst=Charles+Frederick&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fbritishcyclopd02partrich&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-42"><a href="#cite_ref-42">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRalph1969" class="citation magazine cs1">Ralph, Charles L. (May 1969). "The Control of Color in Birds". American Zoologist. Vol. 9, no. 2. pp. 521–530. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Ficb%2F9.2.521">10.1093/icb/9.2.521</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/3881820">3881820</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/5362278">5362278</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=American+Zoologist&rft.atitle=The+Control+of+Color+in+Birds&rft.volume=9&rft.issue=2&rft.pages=521-530&rft.date=1969-05&rft_id=info%3Apmid%2F5362278&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F3881820%23id-name%3DJSTOR&rft_id=info%3Adoi%2F10.1093%2Ficb%2F9.2.521&rft.aulast=Ralph&rft.aufirst=Charles+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Howell23-43">^ <a href="#cite_ref-Howell23_43-0">a</a> <a href="#cite_ref-Howell23_43-1">b</a> <a href="#cite_ref-Howell23_43-2">c</a> <a href="#CITEREFHowell2007">Howell 2007</a>, p. 23 </li> <li id="cite_note-Grandin-44">^ <a href="#cite_ref-Grandin_44-0">a</a> <a href="#cite_ref-Grandin_44-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGrandin2010" class="citation book cs1">Grandin, Temple (2010). Improving Animal Welfare: A Practical Approach. Oxfordshire, UK: CABI. p. 110. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-84593-541-2" title="Special:BookSources/978-1-84593-541-2"><bdi>978-1-84593-541-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Improving+Animal+Welfare%3A+A+Practical+Approach&rft.place=Oxfordshire%2C+UK&rft.pages=110&rft.pub=CABI&rft.date=2010&rft.isbn=978-1-84593-541-2&rft.aulast=Grandin&rft.aufirst=Temple&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-fostersmith-45"><a href="#cite_ref-fostersmith_45-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20120604232117/http://www.peteducation.com/article.cfm?c=15+1829&aid=2752">"Bird Beaks: Anatomy, Care, and Diseases"</a>. Veterinary & Aquatic Services Department, Drs. Foster & Smith. Archived from <a rel="nofollow" class="external text" href="http://www.peteducation.com/article.cfm?c=15+1829&aid=2752">the original</a> on June 4, 2012. Retrieved January 29, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Bird+Beaks%3A+Anatomy%2C+Care%2C+and+Diseases&rft.pub=Veterinary+%26+Aquatic+Services+Department%2C+Drs.+Foster+%26+Smith&rft_id=http%3A%2F%2Fwww.peteducation.com%2Farticle.cfm%3Fc%3D15%2B1829%26aid%3D2752&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-ash-46"><a href="#cite_ref-ash_46-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAsh" class="citation web cs1">Ash, Lydia. <a rel="nofollow" class="external text" href="http://www.themodernapprentice.com/coping.htm">"Coping your Raptor"</a>. The Modern Apprentice. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20050406015859/http://themodernapprentice.com/coping.htm">Archived</a> from the original on April 6, 2005. Retrieved January 29, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Coping+your+Raptor&rft.pub=The+Modern+Apprentice&rft.aulast=Ash&rft.aufirst=Lydia&rft_id=http%3A%2F%2Fwww.themodernapprentice.com%2Fcoping.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-47"><a href="#cite_ref-47">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBairdBrewerRidgway1874" class="citation book cs1">Baird, Spencer Fullerton; Brewer, Thomas Mayo; Ridgway, Robert (1874). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=PF8MAQAAIAAJ&pg=PA554">A History of North American Birds</a>. Little, Brown. p. 535.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+History+of+North+American+Birds&rft.pages=535&rft.pub=Little%2C+Brown&rft.date=1874&rft.aulast=Baird&rft.aufirst=Spencer+Fullerton&rft.au=Brewer%2C+Thomas+Mayo&rft.au=Ridgway%2C+Robert&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DPF8MAQAAIAAJ%26pg%3DPA554&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-48"><a href="#cite_ref-48">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBierma2004" class="citation news cs1">Bierma, Nathan (August 12, 2004). <a rel="nofollow" class="external text" href="https://www.chicagotribune.com/2004/08/12/add-this-to-life-list-birding-has-inspired-flock-of-words/">"Add this to life list: 'Birding' has inspired flock of words"</a>. Chicago Tribune. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120812104405/http://articles.chicagotribune.com/2004-08-12/features/0408120087_1_catholic-cardinals-billing-cain-and-abel">Archived</a> from the original on 2012-08-12. Retrieved 2017-01-20.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Chicago+Tribune&rft.atitle=Add+this+to+life+list%3A+%27Birding%27+has+inspired+flock+of+words&rft.date=2004-08-12&rft.aulast=Bierma&rft.aufirst=Nathan&rft_id=https%3A%2F%2Fwww.chicagotribune.com%2F2004%2F08%2F12%2Fadd-this-to-life-list-birding-has-inspired-flock-of-words%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Terres232-49"><a href="#cite_ref-Terres232_49-0">^</a> <a href="#CITEREFTerres1980">Terres 1980</a>, p. 232 </li> <li id="cite_note-50"><a href="#cite_ref-50">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSchreiberBurger2002" class="citation book cs1">Schreiber, Elizabeth Anne; Burger, Joanna, eds. (2002). Biology of Marine Birds. Boca Raton, FL: CRC Press. p. 325. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8493-9882-7" title="Special:BookSources/978-0-8493-9882-7"><bdi>978-0-8493-9882-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Biology+of+Marine+Birds&rft.place=Boca+Raton%2C+FL&rft.pages=325&rft.pub=CRC+Press&rft.date=2002&rft.isbn=978-0-8493-9882-7&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Cunningham&Alley-51"><a href="#cite_ref-Cunningham&Alley_51-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCunninghamAlleyCastroPotter2010" class="citation magazine cs1">Cunningham, Susan J.; Alley, Maurice R.; Castro, Isabel; Potter, Murray A.; Cunningham, Malcolm; Pyne, Michael J. (2010). "Bill morphology of Ibises suggests a remote-tactile sensory system for prey detection". The Auk. Vol. 127, no. 2. pp. 308–316. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1525%2Fauk.2009.09117">10.1525/auk.2009.09117</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:85254980">85254980</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Auk&rft.atitle=Bill+morphology+of+Ibises+suggests+a+remote-tactile+sensory+system+for+prey+detection&rft.volume=127&rft.issue=2&rft.pages=308-316&rft.date=2010&rft_id=info%3Adoi%2F10.1525%2Fauk.2009.09117&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A85254980%23id-name%3DS2CID&rft.aulast=Cunningham&rft.aufirst=Susan+J.&rft.au=Alley%2C+Maurice+R.&rft.au=Castro%2C+Isabel&rft.au=Potter%2C+Murray+A.&rft.au=Cunningham%2C+Malcolm&rft.au=Pyne%2C+Michael+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-BusseMeissner2015-52"><a href="#cite_ref-BusseMeissner2015_52-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBusseMeissner2015" class="citation book cs1">Busse, Przemyslaw; Meissner, Wlodzimierz (2015). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=VxHuCAAAQBAJ">Bird Ringing Station Manual</a>. Warsaw: De Gruyter. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-83-7656-053-3" title="Special:BookSources/978-83-7656-053-3"><bdi>978-83-7656-053-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Bird+Ringing+Station+Manual&rft.place=Warsaw&rft.pub=De+Gruyter&rft.date=2015&rft.isbn=978-83-7656-053-3&rft.aulast=Busse&rft.aufirst=Przemyslaw&rft.au=Meissner%2C+Wlodzimierz&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DVxHuCAAAQBAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Weaver23-53"><a href="#cite_ref-Weaver23_53-0">^</a> <a href="#CITEREFWeaver1981">Weaver 1981</a>, p. 23 </li> <li id="cite_note-Sibley17-54">^ <a href="#cite_ref-Sibley17_54-0">a</a> <a href="#cite_ref-Sibley17_54-1">b</a> <a href="#cite_ref-Sibley17_54-2">c</a> <a href="#CITEREFSibley,_et_al.2001">Sibley, et al. 2001</a>, p. 17 </li> <li id="cite_note-Weaver24-55"><a href="#cite_ref-Weaver24_55-0">^</a> <a href="#CITEREFWeaver1981">Weaver 1981</a>, p. 24 </li> <li id="cite_note-56"><a href="#cite_ref-56">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVuilleumier2011" class="citation book cs1">Vuilleumier, françois, ed. (2011). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=yRFpR-D2O1sC&pg=RA24-PA473">American Museum of Natural History Birds of North America Eastern Region</a>. DK Publishing. p. 473. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7566-7387-1" title="Special:BookSources/978-0-7566-7387-1"><bdi>978-0-7566-7387-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=American+Museum+of+Natural+History+Birds+of+North+America+Eastern+Region&rft.pages=473&rft.pub=DK+Publishing&rft.date=2011&rft.isbn=978-0-7566-7387-1&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DyRFpR-D2O1sC%26pg%3DRA24-PA473&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-RanquiniGarcia1958-57"><a href="#cite_ref-RanquiniGarcia1958_57-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRanquiniGarcia1958" class="citation book cs1">Ranquini, Juan Homedes; Garcia, Francisco Haro (1958). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=vRVBAAAAYAAJ">Zoogenética</a>. Salvat.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Zoogen%C3%A9tica&rft.pub=Salvat&rft.date=1958&rft.aulast=Ranquini&rft.aufirst=Juan+Homedes&rft.au=Garcia%2C+Francisco+Haro&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DvRVBAAAAYAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-58"><a href="#cite_ref-58">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.merriam-webster.com/dictionary/broody">"Merriam-Webster definition"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170326135544/https://www.merriam-webster.com/dictionary/broody">Archived</a> from the original on March 26, 2017. Retrieved March 12, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Merriam-Webster+definition&rft_id=http%3A%2F%2Fwww.merriam-webster.com%2Fdictionary%2Fbroody&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-59"><a href="#cite_ref-59">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTurner1997" class="citation magazine cs1">Turner, J. Scott (1997). "On the thermal capacity of a bird's egg warmed by a brood patch". Physiological Zoology. Vol. 70, no. 4. pp. 470–80. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F515854">10.1086/515854</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/9237308">9237308</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Physiological+Zoology&rft.atitle=On+the+thermal+capacity+of+a+bird%27s+egg+warmed+by+a+brood+patch&rft.volume=70&rft.issue=4&rft.pages=470-80&rft.date=1997&rft_id=info%3Adoi%2F10.1086%2F515854&rft_id=info%3Apmid%2F9237308&rft.aulast=Turner&rft.aufirst=J.+Scott&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-60"><a href="#cite_ref-60">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAragonMøllerSolerSoler1999" class="citation magazine cs1">Aragon, S.; Møller, A. P.; Soler, J. J.; Soler, M. (1999). "Molecular phylogeny of cuckoos supports a polyphyletic origin of brood parasitism". Journal of Evolutionary Biology. Vol. 12, no. 3. pp. 495–506. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1046%2Fj.1420-9101.1999.00052.x">10.1046/j.1420-9101.1999.00052.x</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:16923328">16923328</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Evolutionary+Biology&rft.atitle=Molecular+phylogeny+of+cuckoos+supports+a+polyphyletic+origin+of+brood+parasitism&rft.volume=12&rft.issue=3&rft.pages=495-506&rft.date=1999&rft_id=info%3Adoi%2F10.1046%2Fj.1420-9101.1999.00052.x&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A16923328%23id-name%3DS2CID&rft.aulast=Aragon&rft.aufirst=S.&rft.au=M%C3%B8ller%2C+A.+P.&rft.au=Soler%2C+J.+J.&rft.au=Soler%2C+M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-61"><a href="#cite_ref-61">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSorensonPayne2001" class="citation magazine cs1">Sorenson, M.D.; Payne, R.B. (2001). <a rel="nofollow" class="external text" href="https://deepblue.lib.umich.edu/bitstream/2027.42/72018/1/j.0014-3820.2001.tb00768.x.pdf">"A single ancient origin of brood parasitism in African finches: implications for host-parasite coevolution"</a> (PDF). Evolution. Vol. 55, no. 12. pp. 2550–2567. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1554%2F0014-3820%282001%29055%5B2550%3Aasaoob%5D2.0.co%3B2">10.1554/0014-3820(2001)055[2550:asaoob]2.0.co;2</a>. <a href="/wiki/Hdl_(identifier)" class="mw-redirect" title="Hdl (identifier)">hdl</a>:<a rel="nofollow" class="external text" href="https://hdl.handle.net/2027.42%2F72018">2027.42/72018</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/11831669">11831669</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Evolution&rft.atitle=A+single+ancient+origin+of+brood+parasitism+in+African+finches%3A+implications+for+host-parasite+coevolution&rft.volume=55&rft.issue=12&rft.pages=2550-2567&rft.date=2001&rft_id=info%3Ahdl%2F2027.42%2F72018&rft_id=info%3Apmid%2F11831669&rft_id=info%3Adoi%2F10.1554%2F0014-3820%282001%29055%5B2550%3Aasaoob%5D2.0.co%3B2&rft.aulast=Sorenson&rft.aufirst=M.D.&rft.au=Payne%2C+R.B.&rft_id=https%3A%2F%2Fdeepblue.lib.umich.edu%2Fbitstream%2F2027.42%2F72018%2F1%2Fj.0014-3820.2001.tb00768.x.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-62"><a href="#cite_ref-62">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSorensonPayne2002" class="citation magazine cs1">Sorenson, M.D.; Payne, R.B. (2002). "Molecular genetic perspectives on avian brood parasitism". Integrative and Comparative Biology. Vol. 42, no. 2. pp. 388–400. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Ficb%2F42.2.388">10.1093/icb/42.2.388</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/21708732">21708732</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Integrative+and+Comparative+Biology&rft.atitle=Molecular+genetic+perspectives+on+avian+brood+parasitism&rft.volume=42&rft.issue=2&rft.pages=388-400&rft.date=2002&rft_id=info%3Adoi%2F10.1093%2Ficb%2F42.2.388&rft_id=info%3Apmid%2F21708732&rft.aulast=Sorenson&rft.aufirst=M.D.&rft.au=Payne%2C+R.B.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Ritchison-63">^ <a href="#cite_ref-Ritchison_63-0">a</a> <a href="#cite_ref-Ritchison_63-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRitchison" class="citation web cs1">Ritchison, Gary. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170225102837/http://people.eku.edu/ritchisong/feather_evolution.htm">"Ornithology (Bio 554/754): Feather Evolution"</a>. Department of Biological Sciences, Eastern Kentucky University. Archived from <a rel="nofollow" class="external text" href="http://people.eku.edu/ritchisong/feather_evolution.htm">the original</a> on February 25, 2017. Retrieved January 16, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Ornithology+%28Bio+554%2F754%29%3A+Feather+Evolution&rft.pub=Department+of+Biological+Sciences%2C+Eastern+Kentucky+University&rft.aulast=Ritchison&rft.aufirst=Gary&rft_id=http%3A%2F%2Fpeople.eku.edu%2Fritchisong%2Ffeather_evolution.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Chandler250-64">^ <a href="#cite_ref-Chandler250_64-0">a</a> <a href="#cite_ref-Chandler250_64-1">b</a> <a href="#cite_ref-Chandler250_64-2">c</a> <a href="#cite_ref-Chandler250_64-3">d</a> <a href="#cite_ref-Chandler250_64-4">e</a> <a href="#cite_ref-Chandler250_64-5">f</a> <a href="#CITEREFChandler1916">Chandler 1916</a>, p. 250 </li> <li id="cite_note-65"><a href="#cite_ref-65">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.latin-dictionary.net/search/latin/calamus">"Latin Dictionary"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20211016050502/http://www.latin-dictionary.net/search/latin/calamus">Archived</a> from the original on October 16, 2021. Retrieved May 1, 2020.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Latin+Dictionary&rft_id=http%3A%2F%2Fwww.latin-dictionary.net%2Fsearch%2Flatin%2Fcalamus&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Voices-66">^ <a href="#cite_ref-Voices_66-0">a</a> <a href="#cite_ref-Voices_66-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEhrlichDobkinWheye" class="citation web cs1">Ehrlich, Paul R.; Dobkin, David S.; Wheye, Darryl. <a rel="nofollow" class="external text" href="https://web.stanford.edu/group/stanfordbirds/text/uessays/essays_alpha.html">""Bird Voices" and "Vocal Development" from Birds of Stanford essays"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180725012231/http://web.stanford.edu/group/stanfordbirds/text/uessays/essays_alpha.html">Archived</a> from the original on 25 July 2018. Retrieved 9 September 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=%22Bird+Voices%22+and+%22Vocal+Development%22+from+Birds+of+Stanford+essays&rft.aulast=Ehrlich&rft.aufirst=Paul+R.&rft.au=Dobkin%2C+David+S.&rft.au=Wheye%2C+Darryl&rft_id=https%3A%2F%2Fweb.stanford.edu%2Fgroup%2Fstanfordbirds%2Ftext%2Fuessays%2Fessays_alpha.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-67"><a href="#cite_ref-67">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLengagneLaugaAubin2001" class="citation magazine cs1">Lengagne, T.; Lauga, J.; Aubin, T. (2001). <a rel="nofollow" class="external text" href="http://jeb.biologists.org/cgi/reprint/204/4/663.pdf">"Intra-syllabic acoustic signatures used by the King Penguin in parent-chick recognition: an experimental approach"</a> (PDF). The Journal of Experimental Biology. Vol. 204, no. Pt. 4. pp. 663–672. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/11171348">11171348</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070930043626/http://jeb.biologists.org/cgi/reprint/204/4/663.pdf">Archived</a> (PDF) from the original on 2007-09-30. Retrieved 2017-04-01.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+Experimental+Biology&rft.atitle=Intra-syllabic+acoustic+signatures+used+by+the+King+Penguin+in+parent-chick+recognition%3A+an+experimental+approach&rft.volume=204&rft.issue=Pt.+4&rft.pages=663-672&rft.date=2001&rft_id=info%3Apmid%2F11171348&rft.aulast=Lengagne&rft.aufirst=T.&rft.au=Lauga%2C+J.&rft.au=Aubin%2C+T.&rft_id=http%3A%2F%2Fjeb.biologists.org%2Fcgi%2Freprint%2F204%2F4%2F663.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-MacKay2001-68"><a href="#cite_ref-MacKay2001_68-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMacKay2001" class="citation book cs1">MacKay, Barry Kent (January 2001). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=LsTZcR92uPgC&pg=PA28">Bird Sounds: How and why Birds Sing, Call, Chatter, and Screech</a>. Stackpole Books. p. 28. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8117-2787-7" title="Special:BookSources/978-0-8117-2787-7"><bdi>978-0-8117-2787-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Bird+Sounds%3A+How+and+why+Birds+Sing%2C+Call%2C+Chatter%2C+and+Screech&rft.pages=28&rft.pub=Stackpole+Books&rft.date=2001-01&rft.isbn=978-0-8117-2787-7&rft.aulast=MacKay&rft.aufirst=Barry+Kent&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DLsTZcR92uPgC%26pg%3DPA28&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-69"><a href="#cite_ref-69">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAlcock1998" class="citation book cs1"><a href="/wiki/John_Alcock_(behavioral_ecologist)" title="John Alcock (behavioral ecologist)">Alcock, John</a> (1998). <a rel="nofollow" class="external text" href="https://archive.org/details/animalbehaviorev00alco_1">Animal Behavior: An Evolutionary Approach</a> (6th ed.). Sunderland: Sinauer Associates. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-87893-009-8" title="Special:BookSources/978-0-87893-009-8"><bdi>978-0-87893-009-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Animal+Behavior%3A+An+Evolutionary+Approach&rft.place=Sunderland&rft.edition=6th&rft.pub=Sinauer+Associates&rft.date=1998&rft.isbn=978-0-87893-009-8&rft.aulast=Alcock&rft.aufirst=John&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fanimalbehaviorev00alco_1&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-70"><a href="#cite_ref-70">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBrown1982" class="citation magazine cs1">Brown, C. H. (1982). "Ventriloquial and locatable vocalizations in birds". Zeitschrift für Tierpsychologie. Vol. 59, no. 4. pp. 338–350. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1439-0310.1982.tb00346.x">10.1111/j.1439-0310.1982.tb00346.x</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Zeitschrift+f%C3%BCr+Tierpsychologie&rft.atitle=Ventriloquial+and+locatable+vocalizations+in+birds&rft.volume=59&rft.issue=4&rft.pages=338-350&rft.date=1982&rft_id=info%3Adoi%2F10.1111%2Fj.1439-0310.1982.tb00346.x&rft.aulast=Brown&rft.aufirst=C.+H.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Weaver34-71">^ <a href="#cite_ref-Weaver34_71-0">a</a> <a href="#cite_ref-Weaver34_71-1">b</a> <a href="#CITEREFWeaver1981">Weaver 1981</a>, p. 34 </li> <li id="cite_note-Sibley68–69-72"><a href="#cite_ref-Sibley68–69_72-0">^</a> <a href="#CITEREFSibley,_et_al.2001">Sibley, et al. 2001</a>, pp. 68–69 </li> <li id="cite_note-Rowinski2011-73"><a href="#cite_ref-Rowinski2011_73-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRowinski2011" class="citation book cs1">Rowinski, Kate (2011). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Ise4k6tJpQAC&pg=PA22">The Joy of Birding: A Beginner's Guide</a>. Skyhorse Publishing Inc. pp. 22–. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-61608-122-5" title="Special:BookSources/978-1-61608-122-5"><bdi>978-1-61608-122-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Joy+of+Birding%3A+A+Beginner%27s+Guide&rft.pages=22-&rft.pub=Skyhorse+Publishing+Inc.&rft.date=2011&rft.isbn=978-1-61608-122-5&rft.aulast=Rowinski&rft.aufirst=Kate&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DIse4k6tJpQAC%26pg%3DPA22&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-74"><a href="#cite_ref-74">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFThorpe,_W._H.1963" class="citation magazine cs1">Thorpe, W. H. (1963). "Antiphonal Singing in Birds as Evidence for Avian Auditory Reaction Time". Nature. Vol. 197, no. 4869. pp. 774–776. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1963Natur.197..774T">1963Natur.197..774T</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1038%2F197774a0">10.1038/197774a0</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:30542781">30542781</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nature&rft.atitle=Antiphonal+Singing+in+Birds+as+Evidence+for+Avian+Auditory+Reaction+Time&rft.volume=197&rft.issue=4869&rft.pages=774-776&rft.date=1963&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A30542781%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1038%2F197774a0&rft_id=info%3Abibcode%2F1963Natur.197..774T&rft.au=Thorpe%2C+W.+H.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-75"><a href="#cite_ref-75">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStokesWilliams1968" class="citation magazine cs1">Stokes, A. W.; Williams, H. W. (1968). <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/auk/v085n01/p0083-p0089.pdf">"Antiphonal calling in quail"</a> (PDF). Auk. Vol. 85, no. 1. pp. 83–89. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F4083626">10.2307/4083626</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/4083626">4083626</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140429184104/http://sora.unm.edu/sites/default/files/journals/auk/v085n01/p0083-p0089.pdf">Archived</a> (PDF) from the original on 2014-04-29. Retrieved 2017-04-01.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Antiphonal+calling+in+quail&rft.volume=85&rft.issue=1&rft.pages=83-89&rft.date=1968&rft_id=info%3Adoi%2F10.2307%2F4083626&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F4083626%23id-name%3DJSTOR&rft.aulast=Stokes&rft.aufirst=A.+W.&rft.au=Williams%2C+H.+W.&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fauk%2Fv085n01%2Fp0083-p0089.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-76"><a href="#cite_ref-76">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHarrisFranklin2000" class="citation book cs1">Harris, Tony; Franklin, Kim (2000). Shrikes and Bush-Shrikes. Princeton University Press. pp. 257–260. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-691-07036-0" title="Special:BookSources/978-0-691-07036-0"><bdi>978-0-691-07036-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Shrikes+and+Bush-Shrikes&rft.pages=257-260&rft.pub=Princeton+University+Press&rft.date=2000&rft.isbn=978-0-691-07036-0&rft.aulast=Harris&rft.aufirst=Tony&rft.au=Franklin%2C+Kim&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-77"><a href="#cite_ref-77">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOsmaston1941" class="citation magazine cs1">Osmaston, B. B. (1941). "'Duetting' in birds". Ibis. Vol. 5, no. 2. pp. 310–311. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1474-919X.1941.tb00620.x">10.1111/j.1474-919X.1941.tb00620.x</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Ibis&rft.atitle=%27Duetting%27+in+birds&rft.volume=5&rft.issue=2&rft.pages=310-311&rft.date=1941&rft_id=info%3Adoi%2F10.1111%2Fj.1474-919X.1941.tb00620.x&rft.aulast=Osmaston&rft.aufirst=B.+B.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-78"><a href="#cite_ref-78">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPower1966" class="citation magazine cs1">Power, D. M. (1966). "Antiphonal duetting and evidence for auditory reaction time in the Orange-chinned Parakeet". Auk. Vol. 83, no. 2. pp. 314–319. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F4083033">10.2307/4083033</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/4083033">4083033</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Antiphonal+duetting+and+evidence+for+auditory+reaction+time+in+the+Orange-chinned+Parakeet&rft.volume=83&rft.issue=2&rft.pages=314-319&rft.date=1966&rft_id=info%3Adoi%2F10.2307%2F4083033&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F4083033%23id-name%3DJSTOR&rft.aulast=Power&rft.aufirst=D.+M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-79"><a href="#cite_ref-79">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHancockKushlan2010" class="citation book cs1">Hancock, James; Kushlan, James (2010). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=ldzxpcqepksC&pg=PT139">The Herons Handbook</a>. London: A&C Black. pp. 20, 101–102. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4081-3496-2" title="Special:BookSources/978-1-4081-3496-2"><bdi>978-1-4081-3496-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Herons+Handbook&rft.place=London&rft.pages=20%2C+101-102&rft.pub=A%26C+Black&rft.date=2010&rft.isbn=978-1-4081-3496-2&rft.aulast=Hancock&rft.aufirst=James&rft.au=Kushlan%2C+James&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DldzxpcqepksC%26pg%3DPT139&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Floyd2008_495-80"><a href="#cite_ref-Floyd2008_495_80-0">^</a> <a href="#CITEREFFloyd2008">Floyd 2008</a>, p. 495 </li> <li id="cite_note-81"><a href="#cite_ref-81">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSharpe1888" class="citation book cs1">Sharpe, Richard Bowdler (1888). Catalogue of the birds in the British Museum. British Natural History Museum Department of Zoology.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Catalogue+of+the+birds+in+the+British+Museum&rft.pub=British+Natural+History+Museum+Department+of+Zoology&rft.date=1888&rft.aulast=Sharpe&rft.aufirst=Richard+Bowdler&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-82"><a href="#cite_ref-82">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAudubonAmadonBull1967" class="citation book cs1">Audubon, John James; Amadon, Dean; Bull, John L. (1967). The Birds of America. Dover Publications. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/555150">555150</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Birds+of+America&rft.pub=Dover+Publications&rft.date=1967&rft_id=info%3Aoclcnum%2F555150&rft.aulast=Audubon&rft.aufirst=John+James&rft.au=Amadon%2C+Dean&rft.au=Bull%2C+John+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Burke-83"><a href="#cite_ref-Burke_83-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBurke2005" class="citation book cs1">Burke, Don (2005). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=MMMjW6AuzHAC&pg=PA702">The Complete Burke's Backyard: The Ultimate Book of Fact Sheets</a>. Allen & Unwin. p. 702. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9781740457392" title="Special:BookSources/9781740457392"><bdi>9781740457392</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Complete+Burke%27s+Backyard%3A+The+Ultimate+Book+of+Fact+Sheets&rft.pages=702&rft.pub=Allen+%26+Unwin&rft.date=2005&rft.isbn=9781740457392&rft.aulast=Burke&rft.aufirst=Don&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DMMMjW6AuzHAC%26pg%3DPA702&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-BarattiAmmannati2010-84"><a href="#cite_ref-BarattiAmmannati2010_84-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBarattiAmmannatiMagnelliMassolo2010" class="citation magazine cs1">Baratti, Mariella; Ammannati, Martina; Magnelli, Claudia; Massolo, Alessandro; Dessì-Fulgheri, Francesco (2010). "Are large wattles related to particular MHC genotypes in the male pheasant?". Genetica. Vol. 138, no. 6. pp. 657–665. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fs10709-010-9440-5">10.1007/s10709-010-9440-5</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0016-6707">0016-6707</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/20145977">20145977</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:35053439">35053439</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Genetica&rft.atitle=Are+large+wattles+related+to+particular+MHC+genotypes+in+the+male+pheasant%3F&rft.volume=138&rft.issue=6&rft.pages=657-665&rft.date=2010&rft.issn=0016-6707&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A35053439%23id-name%3DS2CID&rft_id=info%3Apmid%2F20145977&rft_id=info%3Adoi%2F10.1007%2Fs10709-010-9440-5&rft.aulast=Baratti&rft.aufirst=Mariella&rft.au=Ammannati%2C+Martina&rft.au=Magnelli%2C+Claudia&rft.au=Massolo%2C+Alessandro&rft.au=Dess%C3%AC-Fulgheri%2C+Francesco&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-85"><a href="#cite_ref-85">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBuchholz1996" class="citation magazine cs1">Buchholz, Richard (1996). <a rel="nofollow" class="external text" href="https://sora.unm.edu/sites/default/files/journals/auk/v113n02/p0310-p0318.pdf">"Thermoregulatory Role of the Unfeathered Head and Neck in Male Wild Turkeys"</a> (PDF). The Auk. Vol. 113, no. 2. pp. 310–318. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F4088897">10.2307/4088897</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/4088897">4088897</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140518135837/https://sora.unm.edu/sites/default/files/journals/auk/v113n02/p0310-p0318.pdf">Archived</a> (PDF) from the original on 2014-05-18. Retrieved 2017-02-11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Auk&rft.atitle=Thermoregulatory+Role+of+the+Unfeathered+Head+and+Neck+in+Male+Wild+Turkeys&rft.volume=113&rft.issue=2&rft.pages=310-318&rft.date=1996&rft_id=info%3Adoi%2F10.2307%2F4088897&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F4088897%23id-name%3DJSTOR&rft.aulast=Buchholz&rft.aufirst=Richard&rft_id=https%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fauk%2Fv113n02%2Fp0310-p0318.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Blake1977-86"><a href="#cite_ref-Blake1977_86-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBlake1977" class="citation book cs1">Blake, Emmet Reid (1977). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=YP0AX3LW8jYC&pg=PA428">Manual of Neotropical Birds</a>. University of Chicago Press. p. 428. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-226-05641-8" title="Special:BookSources/978-0-226-05641-8"><bdi>978-0-226-05641-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Manual+of+Neotropical+Birds&rft.pages=428&rft.pub=University+of+Chicago+Press&rft.date=1977&rft.isbn=978-0-226-05641-8&rft.aulast=Blake&rft.aufirst=Emmet+Reid&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DYP0AX3LW8jYC%26pg%3DPA428&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-PrattBeehler2014-87"><a href="#cite_ref-PrattBeehler2014_87-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPrattBeehler2014" class="citation book cs1">Pratt, Thane K.; Beehler, Bruce M. (2014). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=SBn8AwAAQBAJ&pg=PA262">Birds of New Guinea</a> (2nd ed.). Oxford: Princeton University Press. p. 262. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4008-6511-6" title="Special:BookSources/978-1-4008-6511-6"><bdi>978-1-4008-6511-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds+of+New+Guinea&rft.place=Oxford&rft.pages=262&rft.edition=2nd&rft.pub=Princeton+University+Press&rft.date=2014&rft.isbn=978-1-4008-6511-6&rft.aulast=Pratt&rft.aufirst=Thane+K.&rft.au=Beehler%2C+Bruce+M.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DSBn8AwAAQBAJ%26pg%3DPA262&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-ReillySociety1968-88"><a href="#cite_ref-ReillySociety1968_88-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFReillyNational_Audubon_Society1968" class="citation book cs1">Reilly, Edgar M.; National Audubon Society (1968). <a rel="nofollow" class="external text" href="https://archive.org/details/audubonillustrat00reil">The Audubon illustrated handbook of American birds</a>. McGraw-Hill. p. <a rel="nofollow" class="external text" href="https://archive.org/details/audubonillustrat00reil/page/142">142</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Audubon+illustrated+handbook+of+American+birds&rft.pages=142&rft.pub=McGraw-Hill&rft.date=1968&rft.aulast=Reilly&rft.aufirst=Edgar+M.&rft.au=National+Audubon+Society&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Faudubonillustrat00reil&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Stejneger1885-89"><a href="#cite_ref-Stejneger1885_89-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStejneger1885" class="citation book cs1">Stejneger, Leonhard Hess (1885). <a rel="nofollow" class="external text" href="https://archive.org/details/resultsornithol00stejgoog">Results of Ornithological Explorations in the Commander Islands and in Kamtschatka</a>. U.S. Government Printing Office. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/resultsornithol00stejgoog/page/n61">52</a>–53.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Results+of+Ornithological+Explorations+in+the+Commander+Islands+and+in+Kamtschatka&rft.pages=52-53&rft.pub=U.S.+Government+Printing+Office&rft.date=1885&rft.aulast=Stejneger&rft.aufirst=Leonhard+Hess&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fresultsornithol00stejgoog&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Harris226-90"><a href="#cite_ref-Harris226_90-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNational_Geographic_Society2009" class="citation book cs1">National Geographic Society (2009). Harris, Tim (ed.). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=0TIiIdLp9xkC&pg=PA226">Complete Birds of the World</a>. National Geographic. p. 226. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4262-0403-6" title="Special:BookSources/978-1-4262-0403-6"><bdi>978-1-4262-0403-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Complete+Birds+of+the+World&rft.pages=226&rft.pub=National+Geographic&rft.date=2009&rft.isbn=978-1-4262-0403-6&rft.au=National+Geographic+Society&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D0TIiIdLp9xkC%26pg%3DPA226&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Mobley339-91"><a href="#cite_ref-Mobley339_91-0">^</a> <a href="#CITEREFMobley,_et_al.2008">Mobley, et al. 2008</a>, p. 339 </li> <li id="cite_note-Carnaby124-92"><a href="#cite_ref-Carnaby124_92-0">^</a> <a href="#CITEREFCarnaby2008">Carnaby 2008</a>, p. 124 </li> <li id="cite_note-Mobley441-93"><a href="#cite_ref-Mobley441_93-0">^</a> <a href="#CITEREFMobley,_et_al.2008">Mobley, et al. 2008</a>, p. 441 </li> <li id="cite_note-94"><a href="#cite_ref-94">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJupiterParr2010" class="citation book cs1">Jupiter, Tony; Parr, Mike (2010). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=kqYmmbZXlOkC">Parrots: A Guide to Parrots of the World</a>. A&C Black. p. 17. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4081-3575-4" title="Special:BookSources/978-1-4081-3575-4"><bdi>978-1-4081-3575-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Parrots%3A+A+Guide+to+Parrots+of+the+World&rft.pages=17&rft.pub=A%26C+Black&rft.date=2010&rft.isbn=978-1-4081-3575-4&rft.aulast=Jupiter&rft.aufirst=Tony&rft.au=Parr%2C+Mike&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DkqYmmbZXlOkC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Stettenheim-95">^ <a href="#cite_ref-Stettenheim_95-0">a</a> <a href="#cite_ref-Stettenheim_95-1">b</a> <a href="#cite_ref-Stettenheim_95-2">c</a> <a href="#cite_ref-Stettenheim_95-3">d</a> <a href="#cite_ref-Stettenheim_95-4">e</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStettenheim2000" class="citation magazine cs1">Stettenheim, Peter R. (2000). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120420052438/http://icb.oxfordjournals.org/content/40/4/461.full.pdf+html">"The Integumentary Morphology of Modern Birds—An Overview"</a>. Integrative and Comparative Biology. Vol. 40, no. 4. pp. 461–477. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Ficb%2F40.4.461">10.1093/icb/40.4.461</a>. Archived from <a rel="nofollow" class="external text" href="http://icb.oxfordjournals.org/content/40/4/461.full.pdf+html">the original</a> (PDF) on April 20, 2012.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Integrative+and+Comparative+Biology&rft.atitle=The+Integumentary+Morphology+of+Modern+Birds%E2%80%94An+Overview&rft.volume=40&rft.issue=4&rft.pages=461-477&rft.date=2000&rft_id=info%3Adoi%2F10.1093%2Ficb%2F40.4.461&rft.aulast=Stettenheim&rft.aufirst=Peter+R.&rft_id=http%3A%2F%2Ficb.oxfordjournals.org%2Fcontent%2F40%2F4%2F461.full.pdf%2Bhtml&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Mougeo-96"><a href="#cite_ref-Mougeo_96-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMougeoArroyo2006" class="citation magazine cs1">Mougeo, François; Arroyo, Beatriz E. (June 22, 2006). "Ultraviolet reflectance by the cere of raptors". Biology Letters. Vol. 2, no. 2. pp. 173–176. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1098%2Frsbl.2005.0434">10.1098/rsbl.2005.0434</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1618910">1618910</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/17148356">17148356</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Biology+Letters&rft.atitle=Ultraviolet+reflectance+by+the+cere+of+raptors&rft.volume=2&rft.issue=2&rft.pages=173-176&rft.date=2006-06-22&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC1618910%23id-name%3DPMC&rft_id=info%3Apmid%2F17148356&rft_id=info%3Adoi%2F10.1098%2Frsbl.2005.0434&rft.aulast=Mougeo&rft.aufirst=Fran%C3%A7ois&rft.au=Arroyo%2C+Beatriz+E.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-97"><a href="#cite_ref-97">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLeopold1972" class="citation book cs1">Leopold, Aldo Starker (1972). <a rel="nofollow" class="external text" href="https://archive.org/details/wildlifeofmexico00leop/page/202">Wildlife of Mexico: The Game Birds and Mammals</a>. Berkeley, CA: University of California Press. p. <a rel="nofollow" class="external text" href="https://archive.org/details/wildlifeofmexico00leop/page/202">202</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-520-00724-6" title="Special:BookSources/978-0-520-00724-6"><bdi>978-0-520-00724-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Wildlife+of+Mexico%3A+The+Game+Birds+and+Mammals&rft.place=Berkeley%2C+CA&rft.pages=202&rft.pub=University+of+California+Press&rft.date=1972&rft.isbn=978-0-520-00724-6&rft.aulast=Leopold&rft.aufirst=Aldo+Starker&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fwildlifeofmexico00leop%2Fpage%2F202&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-98"><a href="#cite_ref-98">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAlderton1996" class="citation book cs1">Alderton, David (1996). A Birdkeeper's Guide to Budgies. Tetra Press. p. 12.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Birdkeeper%27s+Guide+to+Budgies&rft.pages=12&rft.pub=Tetra+Press&rft.date=1996&rft.aulast=Alderton&rft.aufirst=David&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill9-99">^ <a href="#cite_ref-Pettingill9_99-0">a</a> <a href="#cite_ref-Pettingill9_99-1">b</a> <a href="#cite_ref-Pettingill9_99-2">c</a> <a href="#cite_ref-Pettingill9_99-3">d</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 9 </li> <li id="cite_note-Vinicombe14-100">^ <a href="#cite_ref-Vinicombe14_100-0">a</a> <a href="#cite_ref-Vinicombe14_100-1">b</a> <a href="#cite_ref-Vinicombe14_100-2">c</a> <a href="#cite_ref-Vinicombe14_100-3">d</a> <a href="#cite_ref-Vinicombe14_100-4">e</a> <a href="#CITEREFVinicombe2014">Vinicombe 2014</a>, p. 14 </li> <li id="cite_note-101"><a href="#cite_ref-101">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEhrlichDobkinWheye1988" class="citation web cs1">Ehrlich, Paul R.; Dobkin, David S.; Wheye, Darryl (1988). <a rel="nofollow" class="external text" href="http://www.stanford.edu/group/stanfordbirds/text/essays/Drinking.html">"Drinking"</a>. Birds of Stanford. Stanford University. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060502012513/http://www.stanford.edu/group/stanfordbirds/text/essays/Drinking.html">Archived</a> from the original on May 2, 2006. Retrieved January 29, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Birds+of+Stanford&rft.atitle=Drinking&rft.date=1988&rft.aulast=Ehrlich&rft.aufirst=Paul+R.&rft.au=Dobkin%2C+David+S.&rft.au=Wheye%2C+Darryl&rft_id=http%3A%2F%2Fwww.stanford.edu%2Fgroup%2Fstanfordbirds%2Ftext%2Fessays%2FDrinking.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-102"><a href="#cite_ref-102">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTsaharMartínez_Del_RioIzhakiArad2005" class="citation magazine cs1">Tsahar, Ella; Martínez Del Rio, C.; Izhaki, I.; Arad, Z. (2005). "Can birds be ammonotelic? Nitrogen balance and excretion in two frugivores". Journal of Experimental Biology. Vol. 208, no. 6. pp. 1, 025–34. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1242%2Fjeb.01495">10.1242/jeb.01495</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/15767304">15767304</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Experimental+Biology&rft.atitle=Can+birds+be+ammonotelic%3F+Nitrogen+balance+and+excretion+in+two+frugivores&rft.volume=208&rft.issue=6&rft.pages=1%2C+025-34&rft.date=2005&rft_id=info%3Adoi%2F10.1242%2Fjeb.01495&rft_id=info%3Apmid%2F15767304&rft.aulast=Tsahar&rft.aufirst=Ella&rft.au=Mart%C3%ADnez+Del+Rio%2C+C.&rft.au=Izhaki%2C+I.&rft.au=Arad%2C+Z.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-coprodeum-103"><a href="#cite_ref-coprodeum_103-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSkadhaugeErlwangerRuziwaDantzer2003" class="citation journal cs1">Skadhauge, E.; Erlwanger, K.H.; Ruziwa, S.D.; Dantzer, V.; Elbrønd, V.S.; Chamunorwa, J.P. (2003). "Does the ostrich (Struthio camelus) coprodeum have the electrophysiological properties and microstructure of other birds?". Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology. 134 (4): 749–755. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FS1095-6433%2803%2900006-0">10.1016/S1095-6433(03)00006-0</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/12814783">12814783</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Comparative+Biochemistry+and+Physiology+Part+A%3A+Molecular+%26+Integrative+Physiology&rft.atitle=Does+the+ostrich+%28Struthio+camelus%29+coprodeum+have+the+electrophysiological+properties+and+microstructure+of+other+birds%3F&rft.volume=134&rft.issue=4&rft.pages=749-755&rft.date=2003&rft_id=info%3Adoi%2F10.1016%2FS1095-6433%2803%2900006-0&rft_id=info%3Apmid%2F12814783&rft.aulast=Skadhauge&rft.aufirst=E.&rft.au=Erlwanger%2C+K.H.&rft.au=Ruziwa%2C+S.D.&rft.au=Dantzer%2C+V.&rft.au=Elbr%C3%B8nd%2C+V.S.&rft.au=Chamunorwa%2C+J.P.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-104"><a href="#cite_ref-104">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFYong2013" class="citation web cs1">Yong, Ed (6 June 2013). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130609052803/http://phenomena.nationalgeographic.com/2013/06/06/how-chickens-lost-their-penises-ducks-kept-theirs/">"Phenomena: Not Exactly Rocket Science How Chickens Lost Their Penises (And Ducks Kept Theirs)"</a>. Phenomena.nationalgeographic.com. Archived from <a rel="nofollow" class="external text" href="http://phenomena.nationalgeographic.com/2013/06/06/how-chickens-lost-their-penises-ducks-kept-theirs/">the original</a> on June 9, 2013. Retrieved January 29, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Phenomena%3A+Not+Exactly+Rocket+Science+How+Chickens+Lost+Their+Penises+%28And+Ducks+Kept+Theirs%29&rft.pub=Phenomena.nationalgeographic.com&rft.date=2013-06-06&rft.aulast=Yong&rft.aufirst=Ed&rft_id=http%3A%2F%2Fphenomena.nationalgeographic.com%2F2013%2F06%2F06%2Fhow-chickens-lost-their-penises-ducks-kept-theirs%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-105"><a href="#cite_ref-105">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20150622030534/http://bcs.whfreeman.com/gill/bcs-pages/body-right_10.asp?s=10000&n=00010&i=99010.06&v=chapter&o=%7C13000%7C00010%7C&ns=undefined">"Ornithology, 3rd Edition – Waterfowl: Order Anseriformes"</a>. Archived from <a rel="nofollow" class="external text" href="http://bcs.whfreeman.com/gill/bcs-pages/body-right_10.asp?s=10000&n=00010&i=99010.06&v=chapter&o=%7C13000%7C00010%7C&ns=undefined">the original</a> on June 22, 2015. Retrieved January 29, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Ornithology%2C+3rd+Edition+%E2%80%93+Waterfowl%3A+Order+Anseriformes&rft_id=http%3A%2F%2Fbcs.whfreeman.com%2Fgill%2Fbcs-pages%2Fbody-right_10.asp%3Fs%3D10000%26n%3D00010%26i%3D99010.06%26v%3Dchapter%26o%3D%257C13000%257C00010%257C%26ns%3Dundefined&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill376-106"><a href="#cite_ref-Pettingill376_106-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 376 </li> <li id="cite_note-Maxwell2013-107"><a href="#cite_ref-Maxwell2013_107-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMaxwell2013" class="citation book cs1">Maxwell, Kenneth E. (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=dnf1BwAAQBAJ&pg=PA99">The Sex Imperative: An Evolutionary Tale of Sexual Survival</a>. Springer. p. 99. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4899-5988-1" title="Special:BookSources/978-1-4899-5988-1"><bdi>978-1-4899-5988-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Sex+Imperative%3A+An+Evolutionary+Tale+of+Sexual+Survival&rft.pages=99&rft.pub=Springer&rft.date=2013&rft.isbn=978-1-4899-5988-1&rft.aulast=Maxwell&rft.aufirst=Kenneth+E.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Ddnf1BwAAQBAJ%26pg%3DPA99&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Doneley2016-108"><a href="#cite_ref-Doneley2016_108-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDoneley2016" class="citation book cs1">Doneley, Bob (2016). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=xQrYCwAAQBAJ&pg=PA12">Avian Medicine and Surgery in Practice: Companion and Aviary Birds, Second Edition</a>. CRC Press. p. 12. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4822-6019-9" title="Special:BookSources/978-1-4822-6019-9"><bdi>978-1-4822-6019-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Avian+Medicine+and+Surgery+in+Practice%3A+Companion+and+Aviary+Birds%2C+Second+Edition&rft.pages=12&rft.pub=CRC+Press&rft.date=2016&rft.isbn=978-1-4822-6019-9&rft.aulast=Doneley&rft.aufirst=Bob&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DxQrYCwAAQBAJ%26pg%3DPA12&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-109"><a href="#cite_ref-109">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLack1947" class="citation magazine cs1">Lack, David (1947) [1887]. <a rel="nofollow" class="external text" href="https://books.google.com/books?id=TaYfZBU11ZoC">"The significance of clutch-size (part I-II)"</a>. The Ibis. Vol. 89, no. 2. pp. 302–352. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1474-919X.1947.tb04155.x">10.1111/j.1474-919X.1947.tb04155.x</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Ibis&rft.atitle=The+significance+of+clutch-size+%28part+I-II%29&rft.volume=89&rft.issue=2&rft.pages=302-352&rft.date=1947&rft_id=info%3Adoi%2F10.1111%2Fj.1474-919X.1947.tb04155.x&rft.aulast=Lack&rft.aufirst=David&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DTaYfZBU11ZoC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill310-110"><a href="#cite_ref-Pettingill310_110-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 310 </li> <li id="cite_note-McCabe1943-111"><a href="#cite_ref-McCabe1943_111-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcCabe1943" class="citation book cs1">McCabe, Robert A. (1943). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Vkc7AAAAMAAJ">Hungarian partridge (perdix perdix linn.) studies in Wisconsin</a>. University of Wisconsin—Madison. p. 28.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Hungarian+partridge+%28perdix+perdix+linn.%29+studies+in+Wisconsin&rft.pages=28&rft.pub=University+of+Wisconsin%E2%80%94Madison&rft.date=1943&rft.aulast=McCabe&rft.aufirst=Robert+A.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DVkc7AAAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-112"><a href="#cite_ref-112">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAnderson2008" class="citation magazine cs1">Anderson, Dave (February–March 2008). "The Chicken's Comb". Backyard Poultry Magazine.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Backyard+Poultry+Magazine&rft.atitle=The+Chicken%27s+Comb&rft.date=2008-02%2F2008-03&rft.aulast=Anderson&rft.aufirst=Dave&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Gill138–141-113"><a href="#cite_ref-Gill138–141_113-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, pp. 138–141 </li> <li id="cite_note-114"><a href="#cite_ref-114">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDanchinWagner1997" class="citation magazine cs1">Danchin, E.; Wagner, R.H. (1997). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20111003160047/http://www.univet.hu/users/jkis/education/Visokol/Coloniality.pdf">"The evolution of coloniality: the emergence of new perspectives"</a> (PDF). Trends in Ecology and Evolution. Vol. 12, no. 2. pp. 342–347. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FS0169-5347%2897%2901124-5">10.1016/S0169-5347(97)01124-5</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/21238100">21238100</a>. Archived from <a rel="nofollow" class="external text" href="http://www.univet.hu/users/jkis/education/Visokol/Coloniality.pdf">the original</a> (PDF) on 2011-10-03. Retrieved 2017-04-01.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Trends+in+Ecology+and+Evolution&rft.atitle=The+evolution+of+coloniality%3A+the+emergence+of+new+perspectives&rft.volume=12&rft.issue=2&rft.pages=342-347&rft.date=1997&rft_id=info%3Adoi%2F10.1016%2FS0169-5347%2897%2901124-5&rft_id=info%3Apmid%2F21238100&rft.aulast=Danchin&rft.aufirst=E.&rft.au=Wagner%2C+R.H.&rft_id=http%3A%2F%2Fwww.univet.hu%2Fusers%2Fjkis%2Feducation%2FVisokol%2FColoniality.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Roll-115"><a href="#cite_ref-Roll_115-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRollandDanchinde_Fraipont1998" class="citation magazine cs1">Rolland, Cecile; Danchin, Etienne; de Fraipont, Michelle (1998). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100620170547/http://www.biosci.missouri.edu/avianecology/courses/avianecology/readings/Rolland_C_1998.pdf">"The Evolution of Coloniality in Birds in Relation to Food, Habitat, Predation, and Life-History Traits: A Comparative Analysis"</a> (PDF). The American Naturalist. Vol. 151, no. 6. pp. 514–529. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F286137">10.1086/286137</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/18811373">18811373</a>. Archived from <a rel="nofollow" class="external text" href="http://www.biosci.missouri.edu/avianecology/courses/avianecology/readings/Rolland_C_1998.pdf">the original</a> (PDF) on June 20, 2010.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+American+Naturalist&rft.atitle=The+Evolution+of+Coloniality+in+Birds+in+Relation+to+Food%2C+Habitat%2C+Predation%2C+and+Life-History+Traits%3A+A+Comparative+Analysis&rft.volume=151&rft.issue=6&rft.pages=514-529&rft.date=1998&rft_id=info%3Adoi%2F10.1086%2F286137&rft_id=info%3Apmid%2F18811373&rft.aulast=Rolland&rft.aufirst=Cecile&rft.au=Danchin%2C+Etienne&rft.au=de+Fraipont%2C+Michelle&rft_id=http%3A%2F%2Fwww.biosci.missouri.edu%2Favianecology%2Fcourses%2Favianecology%2Freadings%2FRolland_C_1998.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-116"><a href="#cite_ref-116">^</a> <a href="#CITEREFCoues1890">Coues 1890</a>, p. 155 </li> <li id="cite_note-117"><a href="#cite_ref-117">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 105 </li> <li id="cite_note-Klein1785-118"><a href="#cite_ref-Klein1785_118-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKlein1785" class="citation book cs1">Klein, Edward (1785). <a rel="nofollow" class="external text" href="https://archive.org/details/elementshistolo02kleigoog">Elements of Histology</a>. Philadelphia: Lea. p. <a rel="nofollow" class="external text" href="https://archive.org/details/elementshistolo02kleigoog/page/n140">124</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Elements+of+Histology&rft.place=Philadelphia&rft.pages=124&rft.pub=Lea&rft.date=1785&rft.aulast=Klein&rft.aufirst=Edward&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Felementshistolo02kleigoog&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pierce-119"><a href="#cite_ref-Pierce_119-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPierce1911" class="citation book cs1">Pierce, R.M. (1911). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=L84PAwAAQBAJ&pg=PA69">Dictionary of aviation</a>. Рипол Классик. pp. 69–70. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-5-87745-565-8" title="Special:BookSources/978-5-87745-565-8"><bdi>978-5-87745-565-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Dictionary+of+aviation&rft.pages=69-70&rft.pub=%D0%A0%D0%B8%D0%BF%D0%BE%D0%BB+%D0%9A%D0%BB%D0%B0%D1%81%D1%81%D0%B8%D0%BA&rft.date=1911&rft.isbn=978-5-87745-565-8&rft.aulast=Pierce&rft.aufirst=R.M.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DL84PAwAAQBAJ%26pg%3DPA69&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Mobley295-120">^ <a href="#cite_ref-Mobley295_120-0">a</a> <a href="#cite_ref-Mobley295_120-1">b</a> <a href="#CITEREFMobley,_et_al.2008">Mobley, et al. 2008</a>, p. 295 </li> <li id="cite_note-Elphick2016-22-23-121"><a href="#cite_ref-Elphick2016-22-23_121-0">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, pp. 22–23 </li> <li id="cite_note-Carnaby10-122"><a href="#cite_ref-Carnaby10_122-0">^</a> <a href="#CITEREFCarnaby2008">Carnaby 2008</a>, p. 10 </li> <li id="cite_note-123"><a href="#cite_ref-123">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTye1985" class="citation magazine cs1">Tye, Hilary (December 1985). <a rel="nofollow" class="external text" href="https://www.biodiversitylibrary.org/item/123887#page/499/mode/1up">"The erectile crest and other head feathering in the genus Picathartes"</a>. Bulletin of the British Ornithologists' Club. Vol. 106, no. 3. p. 91. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180807203306/https://www.biodiversitylibrary.org/item/123887#page/499/mode/1up">Archived</a> from the original on 2018-08-07. Retrieved 2018-01-14.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Bulletin+of+the+British+Ornithologists%27+Club&rft.atitle=The+erectile+crest+and+other+head+feathering+in+the+genus+Picathartes&rft.volume=106&rft.issue=3&rft.pages=91&rft.date=1985-12&rft.aulast=Tye&rft.aufirst=Hilary&rft_id=https%3A%2F%2Fwww.biodiversitylibrary.org%2Fitem%2F123887%23page%2F499%2Fmode%2F1up&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Proctor64-124">^ <a href="#cite_ref-Proctor64_124-0">a</a> <a href="#cite_ref-Proctor64_124-1">b</a> <a href="#CITEREFProctorLynch1998">Proctor & Lynch 1998</a>, p. 64 </li> <li id="cite_note-Highfill-125">^ <a href="#cite_ref-Highfill_125-0">a</a> <a href="#cite_ref-Highfill_125-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHighfill" class="citation web cs1">Highfill, Carol. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170301234333/http://www.birdsnways.com/cockatoo/crests.htm">"Those Magnificent Cockatoo Crests"</a>. Cockatoo Heaven. Archived from <a rel="nofollow" class="external text" href="http://www.birdsnways.com/cockatoo/crests.htm">the original</a> on March 1, 2017. Retrieved March 23, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Those+Magnificent+Cockatoo+Crests&rft.pub=Cockatoo+Heaven&rft.aulast=Highfill&rft.aufirst=Carol&rft_id=http%3A%2F%2Fwww.birdsnways.com%2Fcockatoo%2Fcrests.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Gill318–319-126"><a href="#cite_ref-Gill318–319_126-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, pp. 318–319 </li> <li id="cite_note-127"><a href="#cite_ref-127">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMoustaki2005" class="citation book cs1">Moustaki, Nikki (2005). Parrots for Dummies (1st ed.). Indianapolis, IN: Wiley. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0764583537" title="Special:BookSources/978-0764583537"><bdi>978-0764583537</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Parrots+for+Dummies&rft.place=Indianapolis%2C+IN&rft.edition=1st&rft.pub=Wiley&rft.date=2005&rft.isbn=978-0764583537&rft.aulast=Moustaki&rft.aufirst=Nikki&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill21-128">^ <a href="#cite_ref-Pettingill21_128-0">a</a> <a href="#cite_ref-Pettingill21_128-1">b</a> <a href="#cite_ref-Pettingill21_128-2">c</a> <a href="#cite_ref-Pettingill21_128-3">d</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 21 </li> <li id="cite_note-Burns2008-129"><a href="#cite_ref-Burns2008_129-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBurns2008" class="citation book cs1">Burns, Jim (2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=fFUNsToqnFMC&pg=PA166">Jim Burns' Arizona Birds: From the Backyard to the Backwoods</a>. University of Arizona Press. p. 166. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8165-2644-4" title="Special:BookSources/978-0-8165-2644-4"><bdi>978-0-8165-2644-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Jim+Burns%27+Arizona+Birds%3A+From+the+Backyard+to+the+Backwoods&rft.pages=166&rft.pub=University+of+Arizona+Press&rft.date=2008&rft.isbn=978-0-8165-2644-4&rft.aulast=Burns&rft.aufirst=Jim&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DfFUNsToqnFMC%26pg%3DPA166&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-130"><a href="#cite_ref-130">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRamel2008" class="citation web cs1">Ramel, Gordon (September 29, 2008). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170201223304/http://www.earthlife.net/birds/digestion.html">"The Alimentary Canal in Birds"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.earthlife.net/birds/digestion.html">the original</a> on February 1, 2017. Retrieved January 16, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+Alimentary+Canal+in+Birds&rft.date=2008-09-29&rft.aulast=Ramel&rft.aufirst=Gordon&rft_id=http%3A%2F%2Fwww.earthlife.net%2Fbirds%2Fdigestion.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Levi-131"><a href="#cite_ref-Levi_131-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLevi1977" class="citation book cs1">Levi, Wendell (1977). The Pigeon. Sumter, S.C.: Levi Publishing Co, Inc. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-85390-013-9" title="Special:BookSources/978-0-85390-013-9"><bdi>978-0-85390-013-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Pigeon&rft.place=Sumter%2C+S.C.&rft.pub=Levi+Publishing+Co%2C+Inc&rft.date=1977&rft.isbn=978-0-85390-013-9&rft.aulast=Levi&rft.aufirst=Wendell&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Prolactin-132">^ <a href="#cite_ref-Prolactin_132-0">a</a> <a href="#cite_ref-Prolactin_132-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSilver1984" class="citation magazine cs1">Silver, Rae (1984). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160913135843/http://www.columbiauniversity.org/cu/psychology/silver/publications/035Silver%201984.PDF">"Prolactin and Parenting in the Pigeon Family"</a> (PDF). The Journal of Experimental Zoology. Vol. 232, no. 3. pp. 617–625. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1002%2Fjez.1402320330">10.1002/jez.1402320330</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/6394702">6394702</a>. Archived from the original on September 13, 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+Experimental+Zoology&rft.atitle=Prolactin+and+Parenting+in+the+Pigeon+Family&rft.volume=232&rft.issue=3&rft.pages=617-625&rft.date=1984&rft_id=info%3Adoi%2F10.1002%2Fjez.1402320330&rft_id=info%3Apmid%2F6394702&rft.aulast=Silver&rft.aufirst=Rae&rft_id=http%3A%2F%2Fwww.columbiauniversity.org%2Fcu%2Fpsychology%2Fsilver%2Fpublications%2F035Silver%25201984.PDF&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"><code class="cs1-code">{{<a href="/wiki/Template:Cite_magazine" title="Template:Cite magazine">cite magazine</a>}}</code>: CS1 maint: bot: original URL status unknown (<a href="/wiki/Category:CS1_maint:_bot:_original_URL_status_unknown" title="Category:CS1 maint: bot: original URL status unknown">link</a>) </li> <li id="cite_note-133"><a href="#cite_ref-133">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEraudDorieJacquetFaivre2008" class="citation magazine cs1">Eraud, C.; Dorie, A.; Jacquet, A.; Faivre, B. (2008). "The crop milk: a potential new route for carotenoid-mediated parental effects". Journal of Avian Biology. Vol. 39, no. 2. pp. 247–251. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.0908-8857.2008.04053.x">10.1111/j.0908-8857.2008.04053.x</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Avian+Biology&rft.atitle=The+crop+milk%3A+a+potential+new+route+for+carotenoid-mediated+parental+effects&rft.volume=39&rft.issue=2&rft.pages=247-251&rft.date=2008&rft_id=info%3Adoi%2F10.1111%2Fj.0908-8857.2008.04053.x&rft.aulast=Eraud&rft.aufirst=C.&rft.au=Dorie%2C+A.&rft.au=Jacquet%2C+A.&rft.au=Faivre%2C+B.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-134"><a href="#cite_ref-134">^</a> Ehrlich, Paul R.; Dobkin, David S. and Wheye, Darryl (1988) <a rel="nofollow" class="external text" href="http://www.stanford.edu/group/stanfordbirds/text/essays/Bird_Milk.html">Bird Milk</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20121015052523/http://www.stanford.edu/group/stanfordbirds/text/essays/Bird_Milk.html">Archived</a> 2012-10-15 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. stanford.edu </li> <li id="cite_note-135"><a href="#cite_ref-135">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPhillips2011" class="citation web cs1">Phillips, Campbelll (September 22, 2011). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130814213943/http://www.australiangeographic.com.au/journal/birds-produce-milk-similar-to-mammals.htm">"Mysteries of pigeon milk explained"</a>. Australian Geographic. Archived from <a rel="nofollow" class="external text" href="http://www.australiangeographic.com.au/journal/birds-produce-milk-similar-to-mammals.htm">the original</a> on August 14, 2013. Retrieved August 17, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Mysteries+of+pigeon+milk+explained&rft.pub=Australian+Geographic&rft.date=2011-09-22&rft.aulast=Phillips&rft.aufirst=Campbelll&rft_id=http%3A%2F%2Fwww.australiangeographic.com.au%2Fjournal%2Fbirds-produce-milk-similar-to-mammals.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill10-136">^ <a href="#cite_ref-Pettingill10_136-0">a</a> <a href="#cite_ref-Pettingill10_136-1">b</a> <a href="#cite_ref-Pettingill10_136-2">c</a> <a href="#cite_ref-Pettingill10_136-3">d</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 10 </li> <li id="cite_note-Gill1106-137"><a href="#cite_ref-Gill1106_137-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 106 </li> <li id="cite_note-Ryser1985-138"><a href="#cite_ref-Ryser1985_138-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRyser1985" class="citation book cs1">Ryser, Fred A. (1985). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=bxpXq_hMxfAC&pg=PA22">Birds of the Great Basin: A Natural History</a>. University of Nevada Press. p. 22. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-87417-080-1" title="Special:BookSources/978-0-87417-080-1"><bdi>978-0-87417-080-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds+of+the+Great+Basin%3A+A+Natural+History&rft.pages=22&rft.pub=University+of+Nevada+Press&rft.date=1985&rft.isbn=978-0-87417-080-1&rft.aulast=Ryser&rft.aufirst=Fred+A.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DbxpXq_hMxfAC%26pg%3DPA22&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988">[<a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot">permanent dead link</a>‍] </li> <li id="cite_note-139"><a href="#cite_ref-139">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 127 </li> <li id="cite_note-140"><a href="#cite_ref-140">^</a> <a href="#CITEREFCoues1890">Coues 1890</a>, p. 152 </li> <li id="cite_note-Pyle-141"><a href="#cite_ref-Pyle_141-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPyleHowellYunickDeSante1987" class="citation book cs1">Pyle, Peter; Howell, Steve N. G.; Yunick, Robert P.; DeSante, David F. (1987). Identification Guide to North America Passerines. Bolinas, CA: Slate Creek Press. pp. 6–7. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-9618940-0-9" title="Special:BookSources/978-0-9618940-0-9"><bdi>978-0-9618940-0-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Identification+Guide+to+North+America+Passerines&rft.place=Bolinas%2C+CA&rft.pages=6-7&rft.pub=Slate+Creek+Press&rft.date=1987&rft.isbn=978-0-9618940-0-9&rft.aulast=Pyle&rft.aufirst=Peter&rft.au=Howell%2C+Steve+N.+G.&rft.au=Yunick%2C+Robert+P.&rft.au=DeSante%2C+David+F.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Borras-142"><a href="#cite_ref-Borras_142-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBorrasPascualSenar2000" class="citation magazine cs1">Borras, A.; Pascual, J.; Senar, J. C. (Autumn 2000). <a rel="nofollow" class="external text" href="http://www.bcn.cat/museuciencies_fitxers/imatges/FitxerContingut1987.pdf">"What Do Different Bill Measures Measure and What Is the Best Method to Use in Granivorous Birds?"</a> (PDF). Journal of Field Ornithology. Vol. 71, no. 4. pp. 606–611. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1648%2F0273-8570-71.4.606">10.1648/0273-8570-71.4.606</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/4514529">4514529</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160304080233/http://www.bcn.cat/museuciencies_fitxers/imatges/FitxerContingut1987.pdf">Archived</a> (PDF) from the original on 2016-03-04. Retrieved 2017-01-17.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Field+Ornithology&rft.atitle=What+Do+Different+Bill+Measures+Measure+and+What+Is+the+Best+Method+to+Use+in+Granivorous+Birds%3F&rft.ssn=fall&rft.volume=71&rft.issue=4&rft.pages=606-611&rft.date=2000&rft_id=info%3Adoi%2F10.1648%2F0273-8570-71.4.606&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F4514529%23id-name%3DJSTOR&rft.aulast=Borras&rft.aufirst=A.&rft.au=Pascual%2C+J.&rft.au=Senar%2C+J.+C.&rft_id=http%3A%2F%2Fwww.bcn.cat%2Fmuseuciencies_fitxers%2Fimatges%2FFitxerContingut1987.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-143"><a href="#cite_ref-143">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMullarneySvenssonZetterströmGrant1999" class="citation book cs1">Mullarney, Killian; Svensson, Lars; Zetterström, Dan; Grant, Peter J. (1999). Collins Bird Guide: The Most Complete Field Guide to the Birds of Britain and Europe. London: Harper Collins. p. 357. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-00-711332-3" title="Special:BookSources/978-0-00-711332-3"><bdi>978-0-00-711332-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Collins+Bird+Guide%3A+The+Most+Complete+Field+Guide+to+the+Birds+of+Britain+and+Europe&rft.place=London&rft.pages=357&rft.pub=Harper+Collins&rft.date=1999&rft.isbn=978-0-00-711332-3&rft.aulast=Mullarney&rft.aufirst=Killian&rft.au=Svensson%2C+Lars&rft.au=Zetterstr%C3%B6m%2C+Dan&rft.au=Grant%2C+Peter+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Carnaby334-144">^ <a href="#cite_ref-Carnaby334_144-0">a</a> <a href="#cite_ref-Carnaby334_144-1">b</a> <a href="#cite_ref-Carnaby334_144-2">c</a> <a href="#cite_ref-Carnaby334_144-3">d</a> <a href="#cite_ref-Carnaby334_144-4">e</a> <a href="#cite_ref-Carnaby334_144-5">f</a> <a href="#cite_ref-Carnaby334_144-6">g</a> <a href="#cite_ref-Carnaby334_144-7">h</a> <a href="#CITEREFCarnaby2008">Carnaby 2008</a>, p. 334 </li> <li id="cite_note-145"><a href="#cite_ref-145">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMolles1999" class="citation book cs1">Molles, Manuel C. Jr. (1999). <a rel="nofollow" class="external text" href="https://archive.org/details/ecologyconceptsa0000moll_j9m2">Ecology: Concepts and Applications</a> (International ed.). Dubuque: McGraw-Hill. p. <a rel="nofollow" class="external text" href="https://archive.org/details/ecologyconceptsa0000moll_j9m2/page/510">510</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-07-042716-7" title="Special:BookSources/978-0-07-042716-7"><bdi>978-0-07-042716-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Ecology%3A+Concepts+and+Applications&rft.place=Dubuque&rft.pages=510&rft.edition=International&rft.pub=McGraw-Hill&rft.date=1999&rft.isbn=978-0-07-042716-7&rft.aulast=Molles&rft.aufirst=Manuel+C.+Jr.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fecologyconceptsa0000moll_j9m2&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-HoseyMelfi2013-146"><a href="#cite_ref-HoseyMelfi2013_146-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHoseyMelfiSheila_Pankhurst2013" class="citation book cs1">Hosey, Geoff; Melfi, Vicky; Sheila Pankhurst (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Ua2cAQAAQBAJ&pg=PA419">Zoo Animals: Behaviour, Management, and Welfare</a>. OUP Oxford. p. 419. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-969352-8" title="Special:BookSources/978-0-19-969352-8"><bdi>978-0-19-969352-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Zoo+Animals%3A+Behaviour%2C+Management%2C+and+Welfare&rft.pages=419&rft.pub=OUP+Oxford&rft.date=2013&rft.isbn=978-0-19-969352-8&rft.aulast=Hosey&rft.aufirst=Geoff&rft.au=Melfi%2C+Vicky&rft.au=Sheila+Pankhurst&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DUa2cAQAAQBAJ%26pg%3DPA419&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Scanes2014-147"><a href="#cite_ref-Scanes2014_147-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFScanes2014" class="citation book cs1">Scanes, Colin G. (2014). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=wgN0AwAAQBAJ&pg=PA61">Sturkie's Avian Physiology</a>. Elsevier Science. p. 61. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-407243-5" title="Special:BookSources/978-0-12-407243-5"><bdi>978-0-12-407243-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Sturkie%27s+Avian+Physiology&rft.pages=61&rft.pub=Elsevier+Science&rft.date=2014&rft.isbn=978-0-12-407243-5&rft.aulast=Scanes&rft.aufirst=Colin+G.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DwgN0AwAAQBAJ%26pg%3DPA61&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-AdamsPedersen2000-148"><a href="#cite_ref-AdamsPedersen2000_148-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAdamsPedersen2000" class="citation book cs1">Adams, Rick A.; Pedersen, Scott C. (2000). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=W61Cjl6xJvsC&pg=PA124">Ontogeny, Functional Ecology, and Evolution of Bats</a>. Cambridge University Press. p. 124. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-139-42949-8" title="Special:BookSources/978-1-139-42949-8"><bdi>978-1-139-42949-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Ontogeny%2C+Functional+Ecology%2C+and+Evolution+of+Bats&rft.pages=124&rft.pub=Cambridge+University+Press&rft.date=2000&rft.isbn=978-1-139-42949-8&rft.aulast=Adams&rft.aufirst=Rick+A.&rft.au=Pedersen%2C+Scott+C.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DW61Cjl6xJvsC%26pg%3DPA124&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-IrwinStoner2013-149">^ <a href="#cite_ref-IrwinStoner2013_149-0">a</a> <a href="#cite_ref-IrwinStoner2013_149-1">b</a> <a href="#cite_ref-IrwinStoner2013_149-2">c</a> <a href="#cite_ref-IrwinStoner2013_149-3">d</a> <a href="#cite_ref-IrwinStoner2013_149-4">e</a> <a href="#cite_ref-IrwinStoner2013_149-5">f</a> <a href="#cite_ref-IrwinStoner2013_149-6">g</a> <a href="#cite_ref-IrwinStoner2013_149-7">h</a> <a href="#cite_ref-IrwinStoner2013_149-8">i</a> <a href="#cite_ref-IrwinStoner2013_149-9">j</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFIrwinStonerCobaugh2013" class="citation book cs1">Irwin, Mark D.; Stoner, John B.; Cobaugh, Aaron M. (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Q7TbAgAAQBAJ&pg=PA166">Zookeeping: An Introduction to the Science and Technology</a>. University of Chicago Press. p. 166. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-226-92532-5" title="Special:BookSources/978-0-226-92532-5"><bdi>978-0-226-92532-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Zookeeping%3A+An+Introduction+to+the+Science+and+Technology&rft.pages=166&rft.pub=University+of+Chicago+Press&rft.date=2013&rft.isbn=978-0-226-92532-5&rft.aulast=Irwin&rft.aufirst=Mark+D.&rft.au=Stoner%2C+John+B.&rft.au=Cobaugh%2C+Aaron+M.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DQ7TbAgAAQBAJ%26pg%3DPA166&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Moore2009-150">^ <a href="#cite_ref-Moore2009_150-0">a</a> <a href="#cite_ref-Moore2009_150-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMoore2009" class="citation book cs1">Moore, Peter D. (January 1, 2009). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=yBG_7PHGvQ4C&pg=PA164">Tropical Forests</a>. Infobase Publishing. p. 164. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4381-1874-1" title="Special:BookSources/978-1-4381-1874-1"><bdi>978-1-4381-1874-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Tropical+Forests&rft.pages=164&rft.pub=Infobase+Publishing&rft.date=2009-01-01&rft.isbn=978-1-4381-1874-1&rft.aulast=Moore&rft.aufirst=Peter+D.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DyBG_7PHGvQ4C%26pg%3DPA164&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Klasing1998-151">^ <a href="#cite_ref-Klasing1998_151-0">a</a> <a href="#cite_ref-Klasing1998_151-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKlasing1998" class="citation book cs1">Klasing, Kirk C. (May 21, 1998). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=76rwAAAAMAAJ">Comparative avian nutrition</a>. Cab International. p. 3. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-85199-219-8" title="Special:BookSources/978-0-85199-219-8"><bdi>978-0-85199-219-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Comparative+avian+nutrition&rft.pages=3&rft.pub=Cab+International&rft.date=1998-05-21&rft.isbn=978-0-85199-219-8&rft.aulast=Klasing&rft.aufirst=Kirk+C.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D76rwAAAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Swan1848-152"><a href="#cite_ref-Swan1848_152-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSwan1848" class="citation book cs1">Swan, William Draper (1848). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=EMpMAQAAMAAJ&pg=PA71">The Instructive Reader, Or, A Course of Reading in Natural History, Science and Literature: Designed for the Use of Schools</a>. Thomas, Cowperthwait. p. 71.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Instructive+Reader%2C+Or%2C+A+Course+of+Reading+in+Natural+History%2C+Science+and+Literature%3A+Designed+for+the+Use+of+Schools&rft.pages=71&rft.pub=Thomas%2C+Cowperthwait&rft.date=1848&rft.aulast=Swan&rft.aufirst=William+Draper&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DEMpMAQAAMAAJ%26pg%3DPA71&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Newton1998-153"><a href="#cite_ref-Newton1998_153-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNewton1998" class="citation book cs1">Newton, Ian (1998). <a rel="nofollow" class="external text" href="https://archive.org/details/populationlimita0000newt">Population Limitation in Birds</a>. Academic Press. p. <a rel="nofollow" class="external text" href="https://archive.org/details/populationlimita0000newt/page/341">341</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-08-087923-9" title="Special:BookSources/978-0-08-087923-9"><bdi>978-0-08-087923-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Population+Limitation+in+Birds&rft.pages=341&rft.pub=Academic+Press&rft.date=1998&rft.isbn=978-0-08-087923-9&rft.aulast=Newton&rft.aufirst=Ian&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fpopulationlimita0000newt&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Selby1969-154"><a href="#cite_ref-Selby1969_154-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSelby1969" class="citation book cs1"><a href="/wiki/Michael_Selby" title="Michael Selby">Selby, Michael John</a> (1969). <a rel="nofollow" class="external text" href="https://archive.org/details/surfaceofearth0002selb">The surface of the earth</a>. Cassell. p. <a rel="nofollow" class="external text" href="https://archive.org/details/surfaceofearth0002selb/page/417">417</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-304-92858-3" title="Special:BookSources/978-0-304-92858-3"><bdi>978-0-304-92858-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+surface+of+the+earth&rft.pages=417&rft.pub=Cassell&rft.date=1969&rft.isbn=978-0-304-92858-3&rft.aulast=Selby&rft.aufirst=Michael+John&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fsurfaceofearth0002selb&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Elphick110-1-155"><a href="#cite_ref-Elphick110-1_155-0">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, pp. 110–111 </li> <li id="cite_note-156"><a href="#cite_ref-156">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSpearman1973" class="citation book cs1">Spearman, Richard Ian Campbell (1973). <a rel="nofollow" class="external text" href="https://archive.org/details/integumenttextbo00spea/page/97">The Integumen: A Textbook of Skin Biology</a>. Cambridge University Press. p. <a rel="nofollow" class="external text" href="https://archive.org/details/integumenttextbo00spea/page/97">97</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-521-20048-6" title="Special:BookSources/978-0-521-20048-6"><bdi>978-0-521-20048-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Integumen%3A+A+Textbook+of+Skin+Biology&rft.pages=97&rft.pub=Cambridge+University+Press&rft.date=1973&rft.isbn=978-0-521-20048-6&rft.aulast=Spearman&rft.aufirst=Richard+Ian+Campbell&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fintegumenttextbo00spea%2Fpage%2F97&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-HBW39-157">^ <a href="#cite_ref-HBW39_157-0">a</a> <a href="#cite_ref-HBW39_157-1">b</a> <a href="#cite_ref-HBW39_157-2">c</a> <a href="#CITEREFdel_HoyoElliottSargatal1992">del Hoyo, Elliott & Sargatal 1992</a>, p. 39 </li> <li id="cite_note-Scott31-158"><a href="#cite_ref-Scott31_158-0">^</a> <a href="#CITEREFScott2010">Scott 2010</a>, p. 31 </li> <li id="cite_note-159"><a href="#cite_ref-159">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, pp. 75–77 </li> <li id="cite_note-Gorman2014-160"><a href="#cite_ref-Gorman2014_160-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGorman2014" class="citation book cs1">Gorman, Gerard (2014). Woodpeckers of the World: A Photographic Guide. Firefly Books. p. 28. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-77085-309-6" title="Special:BookSources/978-1-77085-309-6"><bdi>978-1-77085-309-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Woodpeckers+of+the+World%3A+A+Photographic+Guide&rft.pages=28&rft.pub=Firefly+Books&rft.date=2014&rft.isbn=978-1-77085-309-6&rft.aulast=Gorman&rft.aufirst=Gerard&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-BBY-161"><a href="#cite_ref-BBY_161-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20170125175936/http://www.birdsinbackyards.net/species/Gallinago-hardwickii">"Latham's Snipe - Did you know?"</a>. Birds in Backyards. Birdlife Australia. Archived from <a rel="nofollow" class="external text" href="http://www.birdsinbackyards.net/species/Gallinago-hardwickii">the original</a> on January 25, 2017. Retrieved January 25, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Birds+in+Backyards&rft.atitle=Latham%27s+Snipe+-+Did+you+know%3F&rft_id=http%3A%2F%2Fwww.birdsinbackyards.net%2Fspecies%2FGallinago-hardwickii&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Jasper-162">^ <a href="#cite_ref-Jasper_162-0">a</a> <a href="#cite_ref-Jasper_162-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJasper1878" class="citation book cs1">Jasper, Theodore (1878). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=WvI0AQAAMAAJ&pg=PP24">Studer's Popular Ornithology …</a>. Columbus, OH: J.H. Studer & Company. p. 2.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Studer%27s+Popular+Ornithology+%E2%80%A6&rft.place=Columbus%2C+OH&rft.pages=2&rft.pub=J.H.+Studer+%26+Company&rft.date=1878&rft.aulast=Jasper&rft.aufirst=Theodore&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DWvI0AQAAMAAJ%26pg%3DPP24&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-FarnerKing2013-163">^ <a href="#cite_ref-FarnerKing2013_163-0">a</a> <a href="#cite_ref-FarnerKing2013_163-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFarnerKing2013" class="citation book cs1">Farner, Donald S.; King, James R. (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=CC3LBAAAQBAJ&pg=PA13">Avian Biology</a>. Elsevier. p. 13. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4832-6942-9" title="Special:BookSources/978-1-4832-6942-9"><bdi>978-1-4832-6942-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Avian+Biology&rft.pages=13&rft.pub=Elsevier&rft.date=2013&rft.isbn=978-1-4832-6942-9&rft.aulast=Farner&rft.aufirst=Donald+S.&rft.au=King%2C+James+R.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DCC3LBAAAQBAJ%26pg%3DPA13&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-164"><a href="#cite_ref-164">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPycraft1908" class="citation book cs1">Pycraft, W.P. (1908). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=lek5AQAAMAAJ&pg=PA376">Scientific American: Supplement: The Curious Phenomena of Eggshell Pigmentation</a>. Munn and Company. p. 376.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Scientific+American%3A+Supplement%3A+The+Curious+Phenomena+of+Eggshell+Pigmentation&rft.pages=376&rft.pub=Munn+and+Company&rft.date=1908&rft.aulast=Pycraft&rft.aufirst=W.P.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dlek5AQAAMAAJ%26pg%3DPA376&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-HillMcGraw2006-165"><a href="#cite_ref-HillMcGraw2006_165-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHillMcGraw2006" class="citation book cs1">Hill, Geoffrey Edward; McGraw, Kevin J. (2006). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=WnJ8cSoXRMIC&pg=PA368">Bird Coloration: Mechanisms and measurements</a>. Harvard University Press. p. 368. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-674-01893-8" title="Special:BookSources/978-0-674-01893-8"><bdi>978-0-674-01893-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Bird+Coloration%3A+Mechanisms+and+measurements&rft.pages=368&rft.pub=Harvard+University+Press&rft.date=2006&rft.isbn=978-0-674-01893-8&rft.aulast=Hill&rft.aufirst=Geoffrey+Edward&rft.au=McGraw%2C+Kevin+J.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DWnJ8cSoXRMIC%26pg%3DPA368&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-166"><a href="#cite_ref-166">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAriasFernandez2001" class="citation magazine cs1">Arias, J. L.; Fernandez, M. S. (2001). "Role of extracellular matrix molecules in shell formation and structure". World's Poultry Science Journal. Vol. 57, no. 4. pp. 349–357. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1079%2FWPS20010024">10.1079/WPS20010024</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:86152776">86152776</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=World%27s+Poultry+Science+Journal&rft.atitle=Role+of+extracellular+matrix+molecules+in+shell+formation+and+structure&rft.volume=57&rft.issue=4&rft.pages=349-357&rft.date=2001&rft_id=info%3Adoi%2F10.1079%2FWPS20010024&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A86152776%23id-name%3DS2CID&rft.aulast=Arias&rft.aufirst=J.+L.&rft.au=Fernandez%2C+M.+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Hunton-167">^ <a href="#cite_ref-Hunton_167-0">a</a> <a href="#cite_ref-Hunton_167-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHunton2005" class="citation magazine cs1">Hunton, P. (2005). "Research on eggshell structure and quality: an historical overview". Revista Brasileira de Ciência Avícola. Vol. 7, no. 2. pp. 67–71. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1590%2FS1516-635X2005000200001">10.1590/S1516-635X2005000200001</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Revista+Brasileira+de+Ci%C3%AAncia+Av%C3%ADcola&rft.atitle=Research+on+eggshell+structure+and+quality%3A+an+historical+overview&rft.volume=7&rft.issue=2&rft.pages=67-71&rft.date=2005&rft_id=info%3Adoi%2F10.1590%2FS1516-635X2005000200001&rft.aulast=Hunton&rft.aufirst=P.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-168"><a href="#cite_ref-168">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNysGautronGarcia-RuizHincke2004" class="citation magazine cs1">Nys, Yves; Gautron, Joël; Garcia-Ruiz, Juan M.; Hincke, Maxwell T. (2004). "Avian eggshell mineralization: biochemical and functional characterization of matrix proteins". Comptes Rendus Palevol. Vol. 3, no. 6–7. pp. 549–562. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.crpv.2004.08.002">10.1016/j.crpv.2004.08.002</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Comptes+Rendus+Palevol&rft.atitle=Avian+eggshell+mineralization%3A+biochemical+and+functional+characterization+of+matrix+proteins&rft.volume=3&rft.issue=6%E2%80%937&rft.pages=549-562&rft.date=2004&rft_id=info%3Adoi%2F10.1016%2Fj.crpv.2004.08.002&rft.aulast=Nys&rft.aufirst=Yves&rft.au=Gautron%2C+Jo%C3%ABl&rft.au=Garcia-Ruiz%2C+Juan+M.&rft.au=Hincke%2C+Maxwell+T.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-169"><a href="#cite_ref-169">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRomanoffRomanoff1949" class="citation book cs1">Romanoff, Alexis L.; Romanoff, Anastasia J. (1949). The Avian Egg. New York: Wiley. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/191965542">191965542</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Avian+Egg&rft.place=New+York&rft.pub=Wiley&rft.date=1949&rft_id=info%3Aoclcnum%2F191965542&rft.aulast=Romanoff&rft.aufirst=Alexis+L.&rft.au=Romanoff%2C+Anastasia+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-170"><a href="#cite_ref-170">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBurleyVadehra1989" class="citation book cs1">Burley, R.W.; Vadehra, Dharam V. (1989). The Avian Egg: Chemistry and Biology. New York: Wiley. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-471-84995-7" title="Special:BookSources/978-0-471-84995-7"><bdi>978-0-471-84995-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Avian+Egg%3A+Chemistry+and+Biology&rft.place=New+York&rft.pub=Wiley&rft.date=1989&rft.isbn=978-0-471-84995-7&rft.aulast=Burley&rft.aufirst=R.W.&rft.au=Vadehra%2C+Dharam+V.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-171"><a href="#cite_ref-171">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLavelinMeiri2000" class="citation magazine cs1">Lavelin, I., N.; Meiri, M. Pines (2000). "New insight in eggshell formation". Poultry Science. Vol. 79, no. 7. pp. 1014–1017. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fps%2F79.7.1014">10.1093/ps/79.7.1014</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/10901204">10901204</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Poultry+Science&rft.atitle=New+insight+in+eggshell+formation&rft.volume=79&rft.issue=7&rft.pages=1014-1017&rft.date=2000&rft_id=info%3Adoi%2F10.1093%2Fps%2F79.7.1014&rft_id=info%3Apmid%2F10901204&rft.aulast=Lavelin&rft.aufirst=I.%2C+N.&rft.au=Meiri%2C+M.+Pines&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"><code class="cs1-code">{{<a href="/wiki/Template:Cite_magazine" title="Template:Cite magazine">cite magazine</a>}}</code>: CS1 maint: multiple names: authors list (<a href="/wiki/Category:CS1_maint:_multiple_names:_authors_list" title="Category:CS1 maint: multiple names: authors list">link</a>) </li> <li id="cite_note-Alderton1998-172"><a href="#cite_ref-Alderton1998_172-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAlderton1998" class="citation book cs1">Alderton, David (1998). <a rel="nofollow" class="external text" href="https://archive.org/details/completeguidetob00davi">The Complete Guide to Bird Care</a>. Howell Book House. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-87605-038-5" title="Special:BookSources/978-0-87605-038-5"><bdi>978-0-87605-038-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Complete+Guide+to+Bird+Care&rft.pub=Howell+Book+House&rft.date=1998&rft.isbn=978-0-87605-038-5&rft.aulast=Alderton&rft.aufirst=David&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fcompleteguidetob00davi&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Harrison2011-173"><a href="#cite_ref-Harrison2011_173-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHarrison2011" class="citation book cs1">Harrison, John (2011). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=q4DABAAAQBAJ&pg=PT125">Backgarden Chickens and Other Poultry</a>. Little, Brown Book Group. p. 125. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7160-2276-3" title="Special:BookSources/978-0-7160-2276-3"><bdi>978-0-7160-2276-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Backgarden+Chickens+and+Other+Poultry&rft.pages=125&rft.pub=Little%2C+Brown+Book+Group&rft.date=2011&rft.isbn=978-0-7160-2276-3&rft.aulast=Harrison&rft.aufirst=John&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dq4DABAAAQBAJ%26pg%3DPT125&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Damerow2013-174"><a href="#cite_ref-Damerow2013_174-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDamerow2013" class="citation book cs1"><a href="/wiki/Gail_Damerow" title="Gail Damerow">Damerow, Gail</a> (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=gvq9maYXTw8C&pg=PA142">Hatching & Brooding Your Own Chicks: Chickens, Turkeys, Ducks, Geese, Guinea Fowl</a>. Storey Publishing. p. 142. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-60342-878-1" title="Special:BookSources/978-1-60342-878-1"><bdi>978-1-60342-878-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Hatching+%26+Brooding+Your+Own+Chicks%3A+Chickens%2C+Turkeys%2C+Ducks%2C+Geese%2C+Guinea+Fowl&rft.pages=142&rft.pub=Storey+Publishing&rft.date=2013&rft.isbn=978-1-60342-878-1&rft.aulast=Damerow&rft.aufirst=Gail&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dgvq9maYXTw8C%26pg%3DPA142&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Patten2008-175"><a href="#cite_ref-Patten2008_175-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPatten2008" class="citation book cs1">Patten, Bradley M. (2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=W3i643aSE_MC&pg=PA17">Early Embryology of the Chick</a>. Wildside Press LLC. p. 17. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4344-7385-1" title="Special:BookSources/978-1-4344-7385-1"><bdi>978-1-4344-7385-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Early+Embryology+of+the+Chick&rft.pages=17&rft.pub=Wildside+Press+LLC&rft.date=2008&rft.isbn=978-1-4344-7385-1&rft.aulast=Patten&rft.aufirst=Bradley+M.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DW3i643aSE_MC%26pg%3DPA17&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-176"><a href="#cite_ref-176">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation episode cs1">"Sumo Dragon". <a href="/wiki/Dr._K%27s_Exotic_Animal_ER" title="Dr. K's Exotic Animal ER">Dr. K's Exotic Animal ER</a>. Season 03 E01. May 21, 2016. 26 minutes in. <a href="/wiki/Nat_Geo_Wild" title="Nat Geo Wild">Nat Geo Wild</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Dr.+K%27s+Exotic+Animal+ER&rft.series=Season+03+E01&rft.date=2016-05-21&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-177"><a href="#cite_ref-177">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStout2016" class="citation magazine cs1">Stout, Jane D. (May 2016). "Common emergencies in pet birds". The Veterinary Clinics of North America. Exotic Animal Practice. Vol. 19, no. 2. pp. 513–41. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.cvex.2016.01.002">10.1016/j.cvex.2016.01.002</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/26948267">26948267</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Veterinary+Clinics+of+North+America.+Exotic+Animal+Practice&rft.atitle=Common+emergencies+in+pet+birds&rft.volume=19&rft.issue=2&rft.pages=513-41&rft.date=2016-05&rft_id=info%3Adoi%2F10.1016%2Fj.cvex.2016.01.002&rft_id=info%3Apmid%2F26948267&rft.aulast=Stout&rft.aufirst=Jane+D.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Barrows2000-178"><a href="#cite_ref-Barrows2000_178-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBarrows2000" class="citation book cs1">Barrows, Edward M. (2000). <a rel="nofollow" class="external text" href="https://archive.org/details/animalbehaviorde0000barr">Animal Behavior Desk Reference: A Dictionary of Animal Behavior, Ecology, and Evolution, Second Edition</a>. CRC Press. p. <a rel="nofollow" class="external text" href="https://archive.org/details/animalbehaviorde0000barr/page/79">79</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8493-2005-7" title="Special:BookSources/978-0-8493-2005-7"><bdi>978-0-8493-2005-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Animal+Behavior+Desk+Reference%3A+A+Dictionary+of+Animal+Behavior%2C+Ecology%2C+and+Evolution%2C+Second+Edition&rft.pages=79&rft.pub=CRC+Press&rft.date=2000&rft.isbn=978-0-8493-2005-7&rft.aulast=Barrows&rft.aufirst=Edward+M.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fanimalbehaviorde0000barr&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Gill1459-179"><a href="#cite_ref-Gill1459_179-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 459 </li> <li id="cite_note-180"><a href="#cite_ref-180">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWarham1990" class="citation book cs1">Warham, J (1990). The Petrels: Their Ecology and Breeding Systems. London: Academic Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-735420-0" title="Special:BookSources/978-0-12-735420-0"><bdi>978-0-12-735420-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Petrels%3A+Their+Ecology+and+Breeding+Systems&rft.place=London&rft.pub=Academic+Press&rft.date=1990&rft.isbn=978-0-12-735420-0&rft.aulast=Warham&rft.aufirst=J&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Campbell178-181"><a href="#cite_ref-Campbell178_181-0">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 178 </li> <li id="cite_note-Jehl-182">^ <a href="#cite_ref-Jehl_182-0">a</a> <a href="#cite_ref-Jehl_182-1">b</a> <a href="#cite_ref-Jehl_182-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJehl1968" class="citation magazine cs1">Jehl, Joseph R. Jr. (September 1968). <a rel="nofollow" class="external text" href="https://sora.unm.edu/sites/default/files/journals/wilson/v080n03/p0328-p0330.pdf">"The Egg Tooth of Some Charadriiform Birds"</a> (PDF). The Wilson Bulletin. Vol. 80, no. 3. pp. 328–9. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20201022202340/https://sora.unm.edu/sites/default/files/journals/wilson/v080n03/p0328-p0330.pdf">Archived</a> (PDF) from the original on 2020-10-22. Retrieved 2020-10-19.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Wilson+Bulletin&rft.atitle=The+Egg+Tooth+of+Some+Charadriiform+Birds&rft.volume=80&rft.issue=3&rft.pages=328-9&rft.date=1968-09&rft.aulast=Jehl&rft.aufirst=Joseph+R.+Jr.&rft_id=https%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fwilson%2Fv080n03%2Fp0328-p0330.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Perrins-183">^ <a href="#cite_ref-Perrins_183-0">a</a> <a href="#cite_ref-Perrins_183-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPerrinsAttenboroughArlott1987" class="citation book cs1">Perrins, Christopher M.; Attenborough, David; Arlott, Norman (1987). New Generation Guide to the Birds of Britain and Europe. Austin, TX: University of Texas Press. p. 205. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-292-75532-1" title="Special:BookSources/978-0-292-75532-1"><bdi>978-0-292-75532-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=New+Generation+Guide+to+the+Birds+of+Britain+and+Europe&rft.place=Austin%2C+TX&rft.pages=205&rft.pub=University+of+Texas+Press&rft.date=1987&rft.isbn=978-0-292-75532-1&rft.aulast=Perrins&rft.aufirst=Christopher+M.&rft.au=Attenborough%2C+David&rft.au=Arlott%2C+Norman&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-184"><a href="#cite_ref-184">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFClark1961" class="citation magazine cs1">Clark, George A. Jr. (September 1961). <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/wilson/v073n03/p0268-p0278.pdf">"Occurrence and Timing of Egg Teeth in Birds"</a> (PDF). The Wilson Bulletin. Vol. 73, no. 3. pp. 268–278. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160304211935/http://sora.unm.edu/sites/default/files/journals/wilson/v073n03/p0268-p0278.pdf">Archived</a> (PDF) from the original on 2016-03-04. Retrieved 2017-01-20.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Wilson+Bulletin&rft.atitle=Occurrence+and+Timing+of+Egg+Teeth+in+Birds&rft.volume=73&rft.issue=3&rft.pages=268-278&rft.date=1961-09&rft.aulast=Clark&rft.aufirst=George+A.+Jr.&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fwilson%2Fv073n03%2Fp0268-p0278.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Gill427-185"><a href="#cite_ref-Gill427_185-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 427 </li> <li id="cite_note-Gill428-186"><a href="#cite_ref-Gill428_186-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 428 </li> <li id="cite_note-Trail6-187">^ <a href="#cite_ref-Trail6_187-0">a</a> <a href="#cite_ref-Trail6_187-1">b</a> <a href="#CITEREFTrail2001">Trail 2001</a>, p. 6 </li> <li id="cite_note-Prum2002-188">^ <a href="#cite_ref-Prum2002_188-0">a</a> <a href="#cite_ref-Prum2002_188-1">b</a> <a href="#cite_ref-Prum2002_188-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPrumBrush2002" class="citation magazine cs1"><a href="/wiki/Richard_Prum" title="Richard Prum">Prum, Richard O.</a>; Brush, A.H. (2002). <a rel="nofollow" class="external text" href="http://www.yale.edu/eeb/prum/pdf/Prum_n_Brush_2002.pdf">"The evolutionary origin and diversification of feathers"</a> (PDF). <a href="/wiki/The_Quarterly_Review_of_Biology" title="The Quarterly Review of Biology">The Quarterly Review of Biology</a>. Vol. 77, no. 3. pp. 261–295. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F341993">10.1086/341993</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/12365352">12365352</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110629175850/http://www.yale.edu/eeb/prum/pdf/Prum_n_Brush_2002.pdf">Archived</a> (PDF) from the original on 2011-06-29. Retrieved 2017-01-17.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Quarterly+Review+of+Biology&rft.atitle=The+evolutionary+origin+and+diversification+of+feathers&rft.volume=77&rft.issue=3&rft.pages=261-295&rft.date=2002&rft_id=info%3Adoi%2F10.1086%2F341993&rft_id=info%3Apmid%2F12365352&rft.aulast=Prum&rft.aufirst=Richard+O.&rft.au=Brush%2C+A.H.&rft_id=http%3A%2F%2Fwww.yale.edu%2Feeb%2Fprum%2Fpdf%2FPrum_n_Brush_2002.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Prum2003-189"><a href="#cite_ref-Prum2003_189-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPrumBrush2003" class="citation magazine cs1">Prum, Richard O.; Brush, A.H. (March 2003). <a rel="nofollow" class="external text" href="http://www.yale.edu/eeb/prum/pdf/Prum_n_Brush_2003.pdf">"Which Came First, the Feather or the Bird?"</a> (PDF). <a href="/wiki/Scientific_American" title="Scientific American">Scientific American</a>. Vol. 288, no. 3. pp. 84–93. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2003SciAm.288c..84P">2003SciAm.288c..84P</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1038%2Fscientificamerican0303-84">10.1038/scientificamerican0303-84</a> (inactive 1 November 2024). <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/12616863">12616863</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110629175910/http://www.yale.edu/eeb/prum/pdf/Prum_n_Brush_2003.pdf">Archived</a> (PDF) from the original on 2011-06-29. Retrieved 2017-01-17.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Scientific+American&rft.atitle=Which+Came+First%2C+the+Feather+or+the+Bird%3F&rft.volume=288&rft.issue=3&rft.pages=84-93&rft.date=2003-03&rft_id=info%3Apmid%2F12616863&rft_id=info%3Adoi%2F10.1038%2Fscientificamerican0303-84&rft_id=info%3Abibcode%2F2003SciAm.288c..84P&rft.aulast=Prum&rft.aufirst=Richard+O.&rft.au=Brush%2C+A.H.&rft_id=http%3A%2F%2Fwww.yale.edu%2Feeb%2Fprum%2Fpdf%2FPrum_n_Brush_2003.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"><code class="cs1-code">{{<a href="/wiki/Template:Cite_magazine" title="Template:Cite magazine">cite magazine</a>}}</code>: CS1 maint: DOI inactive as of November 2024 (<a href="/wiki/Category:CS1_maint:_DOI_inactive_as_of_November_2024" title="Category:CS1 maint: DOI inactive as of November 2024">link</a>) </li> <li id="cite_note-Prum1999-190"><a href="#cite_ref-Prum1999_190-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPrum1999" class="citation magazine cs1">Prum, Richard O. (1999). <a rel="nofollow" class="external text" href="http://prumlab.yale.edu/sites/default/files/prum_1999_mde_development.pdf">"Development and Evolutionary Origin of Feathers"</a> (PDF). Journal of Experimental Zoology. Vol. 285, no. 4. pp. 291–306. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1002%2F%28SICI%291097-010X%2819991215%29285%3A4%3C291%3A%3AAID-JEZ1%3E3.0.CO%3B2-9">10.1002/(SICI)1097-010X(19991215)285:4<291::AID-JEZ1>3.0.CO;2-9</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/10578107">10578107</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180502132252/https://prumlab.yale.edu/sites/default/files/prum_1999_mde_development.pdf">Archived</a> (PDF) from the original on 2018-05-02. Retrieved 2017-04-12.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Experimental+Zoology&rft.atitle=Development+and+Evolutionary+Origin+of+Feathers&rft.volume=285&rft.issue=4&rft.pages=291-306&rft.date=1999&rft_id=info%3Adoi%2F10.1002%2F%28SICI%291097-010X%2819991215%29285%3A4%3C291%3A%3AAID-JEZ1%3E3.0.CO%3B2-9&rft_id=info%3Apmid%2F10578107&rft.aulast=Prum&rft.aufirst=Richard+O.&rft_id=http%3A%2F%2Fprumlab.yale.edu%2Fsites%2Fdefault%2Ffiles%2Fprum_1999_mde_development.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-iridescence-191"><a href="#cite_ref-iridescence_191-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLi2012" class="citation magazine cs1">Li, Quanguo (March 9, 2012). "Reconstruction of Microraptor and the Evolution of Iridescent Plumage". Science. Vol. 335, no. 6073. pp. 1215–1219. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2012Sci...335.1215L">2012Sci...335.1215L</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1126%2Fscience.1213780">10.1126/science.1213780</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/22403389">22403389</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:206537426">206537426</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Science&rft.atitle=Reconstruction+of+Microraptor+and+the+Evolution+of+Iridescent+Plumage&rft.volume=335&rft.issue=6073&rft.pages=1215-1219&rft.date=2012-03-09&rft_id=info%3Adoi%2F10.1126%2Fscience.1213780&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A206537426%23id-name%3DS2CID&rft_id=info%3Apmid%2F22403389&rft_id=info%3Abibcode%2F2012Sci...335.1215L&rft.aulast=Li&rft.aufirst=Quanguo&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill29-192">^ <a href="#cite_ref-Pettingill29_192-0">a</a> <a href="#cite_ref-Pettingill29_192-1">b</a> <a href="#cite_ref-Pettingill29_192-2">c</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 29 </li> <li id="cite_note-Chandler285-193">^ <a href="#cite_ref-Chandler285_193-0">a</a> <a href="#cite_ref-Chandler285_193-1">b</a> <a href="#CITEREFChandler1916">Chandler 1916</a>, p. 285 </li> <li id="cite_note-atlas-194"><a href="#cite_ref-atlas_194-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcLelland1991" class="citation book cs1">McLelland, J. (1991). A color atlas of avian anatomy. W.B. Saunders Co. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7216-3536-1" title="Special:BookSources/978-0-7216-3536-1"><bdi>978-0-7216-3536-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+color+atlas+of+avian+anatomy&rft.pub=W.B.+Saunders+Co.&rft.date=1991&rft.isbn=978-0-7216-3536-1&rft.aulast=McLelland&rft.aufirst=J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-195"><a href="#cite_ref-195">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHuber-EicherSebo2001" class="citation magazine cs1">Huber-Eicher, B.; Sebo, F. (2001). "The prevalence of feather pecking and development in commercial flocks of laying hens". Applied Animal Behaviour Science. Vol. 74, no. 3. pp. 223–231. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FS0168-1591%2801%2900173-3">10.1016/S0168-1591(01)00173-3</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Applied+Animal+Behaviour+Science&rft.atitle=The+prevalence+of+feather+pecking+and+development+in+commercial+flocks+of+laying+hens&rft.volume=74&rft.issue=3&rft.pages=223-231&rft.date=2001&rft_id=info%3Adoi%2F10.1016%2FS0168-1591%2801%2900173-3&rft.aulast=Huber-Eicher&rft.aufirst=B.&rft.au=Sebo%2C+F.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-196"><a href="#cite_ref-196">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSherwinRichardsNicol2010" class="citation magazine cs1">Sherwin, C.M.; Richards, G.J; Nicol, C.J. (2010). "A comparison of the welfare of layer hens in four housing systems in the UK". British Poultry Science. Vol. 51, no. 4. pp. 488–499. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080%2F00071668.2010.502518">10.1080/00071668.2010.502518</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/20924842">20924842</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:8968010">8968010</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=British+Poultry+Science&rft.atitle=A+comparison+of+the+welfare+of+layer+hens+in+four+housing+systems+in+the+UK&rft.volume=51&rft.issue=4&rft.pages=488-499&rft.date=2010&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A8968010%23id-name%3DS2CID&rft_id=info%3Apmid%2F20924842&rft_id=info%3Adoi%2F10.1080%2F00071668.2010.502518&rft.aulast=Sherwin&rft.aufirst=C.M.&rft.au=Richards%2C+G.J&rft.au=Nicol%2C+C.J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-197"><a href="#cite_ref-197">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFButlerDavis2010" class="citation magazine cs1">Butler, D.A.; Davis, C. (2010). "Effects of plastic bits on the condition and behaviour of captive-reared pheasants". Veterinary Record. Vol. 166, no. 13. pp. 398–401. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1136%2Fvr.b4804">10.1136/vr.b4804</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/20348469">20348469</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:7549266">7549266</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Veterinary+Record&rft.atitle=Effects+of+plastic+bits+on+the+condition+and+behaviour+of+captive-reared+pheasants&rft.volume=166&rft.issue=13&rft.pages=398-401&rft.date=2010&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A7549266%23id-name%3DS2CID&rft_id=info%3Apmid%2F20348469&rft_id=info%3Adoi%2F10.1136%2Fvr.b4804&rft.aulast=Butler&rft.aufirst=D.A.&rft.au=Davis%2C+C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-198"><a href="#cite_ref-198">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSherwin2010" class="citation book cs1">Sherwin, C.M. (2010). "Turkeys: Behavior, Management and Well-Being". In Pond, Wilson G.; Bell, Alan W. (eds.). The Encyclopaedia of Animal Science. Marcel Dekker. pp. 847–849.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Turkeys%3A+Behavior%2C+Management+and+Well-Being&rft.btitle=The+Encyclopaedia+of+Animal+Science&rft.pages=847-849&rft.pub=Marcel+Dekker&rft.date=2010&rft.aulast=Sherwin&rft.aufirst=C.M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-199"><a href="#cite_ref-199">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGustafsonChengGarnerPajorc2007" class="citation magazine cs1">Gustafson, Leslie A.; Cheng, Heng-Wei; Garner, Joseph P.; Pajorc, Edmond A.; Mench, Joy A. (2007). "Effects of bill-trimming Muscovy ducks on behavior, body weight gain, and bill morphopathology". Applied Animal Behaviour Science. Vol. 103, no. 1–2. pp. 59–74. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.applanim.2006.04.003">10.1016/j.applanim.2006.04.003</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Applied+Animal+Behaviour+Science&rft.atitle=Effects+of+bill-trimming+Muscovy+ducks+on+behavior%2C+body+weight+gain%2C+and+bill+morphopathology&rft.volume=103&rft.issue=1%E2%80%932&rft.pages=59-74&rft.date=2007&rft_id=info%3Adoi%2F10.1016%2Fj.applanim.2006.04.003&rft.aulast=Gustafson&rft.aufirst=Leslie+A.&rft.au=Cheng%2C+Heng-Wei&rft.au=Garner%2C+Joseph+P.&rft.au=Pajorc%2C+Edmond+A.&rft.au=Mench%2C+Joy+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-200"><a href="#cite_ref-200">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFReischlSambraus2003" class="citation magazine cs1">Reischl, E.; Sambraus, H.H. (2003). "Feather-pecking of African ostriches in Israel". Tierarztliche Umschau. Vol. 58, no. 7. pp. 364–369.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Tierarztliche+Umschau&rft.atitle=Feather-pecking+of+African+ostriches+in+Israel&rft.volume=58&rft.issue=7&rft.pages=364-369&rft.date=2003&rft.aulast=Reischl&rft.aufirst=E.&rft.au=Sambraus%2C+H.H.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-201"><a href="#cite_ref-201">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcAdieKeeling2002" class="citation magazine cs1">McAdie, T.M.; Keeling, L.J. (2002). "The social transmission of feather pecking in laying hens: effects of environment and age". Applied Animal Behaviour Science. Vol. 75, no. 2. pp. 147–159. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FS0168-1591%2801%2900182-4">10.1016/S0168-1591(01)00182-4</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Applied+Animal+Behaviour+Science&rft.atitle=The+social+transmission+of+feather+pecking+in+laying+hens%3A+effects+of+environment+and+age&rft.volume=75&rft.issue=2&rft.pages=147-159&rft.date=2002&rft_id=info%3Adoi%2F10.1016%2FS0168-1591%2801%2900182-4&rft.aulast=McAdie&rft.aufirst=T.M.&rft.au=Keeling%2C+L.J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Lumeij_and_Hommers,_2008-202"><a href="#cite_ref-Lumeij_and_Hommers,_2008_202-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLumeijHommers2008" class="citation magazine cs1">Lumeij, Johannes T.; Hommers, Caroline J. (2008). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20151123180457/http://img2.tapuz.co.il/forums/1_148363975.pdf">"Foraging 'enrichment' as treatment for Pterotillomania"</a> (PDF). Applied Animal Behaviour Science. Vol. 111, no. 1–2. pp. 85–94. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.applanim.2007.05.015">10.1016/j.applanim.2007.05.015</a>. Archived from <a rel="nofollow" class="external text" href="http://img2.tapuz.co.il/forums/1_148363975.pdf">the original</a> (PDF) on 2015-11-23. Retrieved 2020-12-20.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Applied+Animal+Behaviour+Science&rft.atitle=Foraging+%27enrichment%27+as+treatment+for+Pterotillomania&rft.volume=111&rft.issue=1%E2%80%932&rft.pages=85-94&rft.date=2008&rft_id=info%3Adoi%2F10.1016%2Fj.applanim.2007.05.015&rft.aulast=Lumeij&rft.aufirst=Johannes+T.&rft.au=Hommers%2C+Caroline+J.&rft_id=http%3A%2F%2Fimg2.tapuz.co.il%2Fforums%2F1_148363975.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-203"><a href="#cite_ref-203">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.beautyofbirds.com/featherplucking.html">"Feather Plucking in Pet Birds"</a>. Beauty of Birds. 2011. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20191102211331/https://www.beautyofbirds.com/featherplucking.html">Archived</a> from the original on November 2, 2019. Retrieved December 21, 2020.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Beauty+of+Birds&rft.atitle=Feather+Plucking+in+Pet+Birds&rft.date=2011&rft_id=http%3A%2F%2Fwww.beautyofbirds.com%2Ffeatherplucking.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-204"><a href="#cite_ref-204">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSteeves2005" class="citation web cs1">Steeves, Susan A. (December 21, 2005). <a rel="nofollow" class="external text" href="https://www.purdue.edu/uns/html4ever/2005/051221.Garner.parrots.html">"Parrots' behaviors mirror human mental disorders"</a>. Purdue University. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210410211405/https://www.purdue.edu/uns/html4ever/2005/051221.Garner.parrots.html">Archived</a> from the original on April 10, 2021. Retrieved December 21, 2020.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Parrots%27+behaviors+mirror+human+mental+disorders&rft.pub=Purdue+University&rft.date=2005-12-21&rft.aulast=Steeves&rft.aufirst=Susan+A.&rft_id=https%3A%2F%2Fwww.purdue.edu%2Funs%2Fhtml4ever%2F2005%2F051221.Garner.parrots.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-van_Zeeland_et_al._2009-205"><a href="#cite_ref-van_Zeeland_et_al._2009_205-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFvan_ZeelandSpruitRodenburg2009" class="citation magazine cs1">van Zeeland, Yvonne R.A.; Spruit, Berry M.; Rodenburg, T. Bass; et al. (November 2009). <a rel="nofollow" class="external text" href="https://www.sciencedirect.com/science/article/abs/pii/S0168159109002561">"Feather damaging behaviour in parrots: A review with consideration of comparative aspects"</a>. Applied Animal Behaviour Science. Vol. 121, no. 2. pp. 75–95. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.applanim.2009.09.006">10.1016/j.applanim.2009.09.006</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230528143717/https://www.sciencedirect.com/science/article/abs/pii/S0168159109002561">Archived</a> from the original on 2023-05-28. Retrieved 2020-12-21.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Applied+Animal+Behaviour+Science&rft.atitle=Feather+damaging+behaviour+in+parrots%3A+A+review+with+consideration+of+comparative+aspects&rft.volume=121&rft.issue=2&rft.pages=75-95&rft.date=2009-11&rft_id=info%3Adoi%2F10.1016%2Fj.applanim.2009.09.006&rft.aulast=van+Zeeland&rft.aufirst=Yvonne+R.A.&rft.au=Spruit%2C+Berry+M.&rft.au=Rodenburg%2C+T.+Bass&rft_id=https%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fabs%2Fpii%2FS0168159109002561&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-206"><a href="#cite_ref-206">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChoiniereMowbray_GoldingVezo2005" class="citation book cs1">Choiniere, J.; Mowbray Golding, C.; Vezo, T. (2005). <a rel="nofollow" class="external text" href="https://archive.org/details/whatsthatbirdget00choi/page/33">What's That Bird?</a>. <a href="/wiki/Storey_Publishing" class="mw-redirect" title="Storey Publishing">Storey Publishing</a>. p. <a rel="nofollow" class="external text" href="https://archive.org/details/whatsthatbirdget00choi/page/33">33</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-58017-554-8" title="Special:BookSources/978-1-58017-554-8"><bdi>978-1-58017-554-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=What%27s+That+Bird%3F&rft.pages=33&rft.pub=Storey+Publishing&rft.date=2005&rft.isbn=978-1-58017-554-8&rft.aulast=Choiniere&rft.aufirst=J.&rft.au=Mowbray+Golding%2C+C.&rft.au=Vezo%2C+T.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fwhatsthatbirdget00choi%2Fpage%2F33&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Sibley78-207"><a href="#cite_ref-Sibley78_207-0">^</a> <a href="#CITEREFSibley,_et_al.2001">Sibley, et al. 2001</a>, p. 78 </li> <li id="cite_note-Campbell433-208">^ <a href="#cite_ref-Campbell433_208-0">a</a> <a href="#cite_ref-Campbell433_208-1">b</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 433 </li> <li id="cite_note-OConnor-209">^ <a href="#cite_ref-OConnor_209-0">a</a> <a href="#cite_ref-OConnor_209-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFO'Connor1984" class="citation book cs1">O'Connor, R. J. (1984). The Growth and Development of Birds. <a href="/wiki/Wiley_Interscience" class="mw-redirect" title="Wiley Interscience">Wiley Interscience</a>. p. 174. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-471-90345-1" title="Special:BookSources/978-0-471-90345-1"><bdi>978-0-471-90345-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Growth+and+Development+of+Birds&rft.pages=174&rft.pub=Wiley+Interscience&rft.date=1984&rft.isbn=978-0-471-90345-1&rft.aulast=O%27Connor&rft.aufirst=R.+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-210"><a href="#cite_ref-210">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRicklefs1996" class="citation magazine cs1">Ricklefs, R. E. (1996). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20081010223857/http://elibrary.unm.edu/sora/Wilson/v078n01/p0047-p0056.pdf">"Behavior of Young Cactus Wrens and Curve-billed Thrashers"</a> (PDF). The Wilson Bulletin. Vol. 78, no. 1. pp. 47–56. Archived from <a rel="nofollow" class="external text" href="http://elibrary.unm.edu/sora/Wilson/v078n01/p0047-p0056.pdf">the original</a> (PDF) on October 10, 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Wilson+Bulletin&rft.atitle=Behavior+of+Young+Cactus+Wrens+and+Curve-billed+Thrashers&rft.volume=78&rft.issue=1&rft.pages=47-56&rft.date=1996&rft.aulast=Ricklefs&rft.aufirst=R.+E.&rft_id=http%3A%2F%2Felibrary.unm.edu%2Fsora%2FWilson%2Fv078n01%2Fp0047-p0056.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Nitzsch1867-211"><a href="#cite_ref-Nitzsch1867_211-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNitzsch1867" class="citation book cs1">Nitzsch, Christian Ludwig (1867). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=O_NFAAAAcAAJ&pg=PA14">Nitzsch's Pterylography</a>. Ray Society. p. 14.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Nitzsch%27s+Pterylography&rft.pages=14&rft.pub=Ray+Society&rft.date=1867&rft.aulast=Nitzsch&rft.aufirst=Christian+Ludwig&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DO_NFAAAAcAAJ%26pg%3DPA14&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Chandler261-212"><a href="#cite_ref-Chandler261_212-0">^</a> <a href="#CITEREFChandler1916">Chandler 1916</a>, p. 261 </li> <li id="cite_note-Proctor96-213"><a href="#cite_ref-Proctor96_213-0">^</a> <a href="#CITEREFProctorLynch1998">Proctor & Lynch 1998</a>, p. 96 </li> <li id="cite_note-Chandler253-214"><a href="#cite_ref-Chandler253_214-0">^</a> <a href="#CITEREFChandler1916">Chandler 1916</a>, p. 253 </li> <li id="cite_note-Eastman2000-216"><a href="#cite_ref-Eastman2000_216-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEastman2000" class="citation book cs1">Eastman, John (2000). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=lfSldAchKFYC&pg=PR13">Birds of Field and Shore: Grassland and Shoreline Birds of Eastern North America</a>. Stackpole Books. p. 13. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8117-2699-3" title="Special:BookSources/978-0-8117-2699-3"><bdi>978-0-8117-2699-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds+of+Field+and+Shore%3A+Grassland+and+Shoreline+Birds+of+Eastern+North+America&rft.pages=13&rft.pub=Stackpole+Books&rft.date=2000&rft.isbn=978-0-8117-2699-3&rft.aulast=Eastman&rft.aufirst=John&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DlfSldAchKFYC%26pg%3DPR13&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Stiteler2013-217"><a href="#cite_ref-Stiteler2013_217-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStiteler2013" class="citation book cs1">Stiteler, Sharon (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=v6UAQB0Ra6QC&pg=PT389">1001 Secrets Every Birder Should Know: Tips and Trivia for the Backyard and Beyond</a>. London: Running Press. p. 389. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7624-4832-6" title="Special:BookSources/978-0-7624-4832-6"><bdi>978-0-7624-4832-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=1001+Secrets+Every+Birder+Should+Know%3A+Tips+and+Trivia+for+the+Backyard+and+Beyond&rft.place=London&rft.pages=389&rft.pub=Running+Press&rft.date=2013&rft.isbn=978-0-7624-4832-6&rft.aulast=Stiteler&rft.aufirst=Sharon&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dv6UAQB0Ra6QC%26pg%3DPT389&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Gillvarious-218"><a href="#cite_ref-Gillvarious_218-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 136, et seq. </li> <li id="cite_note-Rootsvarious-219"><a href="#cite_ref-Rootsvarious_219-0">^</a> <a href="#CITEREFRoots2006">Roots 2006</a>, p. various </li> <li id="cite_note-220"><a href="#cite_ref-220">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcNab1994" class="citation magazine cs1">McNab, Brian K. (October 1994). "Energy Conservation and the Evolution of Flightlessness in Birds". The American Naturalist. Vol. 144, no. 4. pp. 628–42. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F285697">10.1086/285697</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/2462941">2462941</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+American+Naturalist&rft.atitle=Energy+Conservation+and+the+Evolution+of+Flightlessness+in+Birds&rft.volume=144&rft.issue=4&rft.pages=628-42&rft.date=1994-10&rft_id=info%3Adoi%2F10.1086%2F285697&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F2462941%23id-name%3DJSTOR&rft.aulast=McNab&rft.aufirst=Brian+K.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-221"><a href="#cite_ref-221">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKovacsMeyers2000" class="citation magazine cs1">Kovacs, Christopher E.; Meyers, RA (2000). "Anatomy and histochemistry of flight muscles in a wing-propelled diving bird, the Atlantic Puffin, Fratercula arctica". Journal of Morphology. Vol. 244, no. 2. pp. 109–25. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1002%2F%28SICI%291097-4687%28200005%29244%3A2%3C109%3A%3AAID-JMOR2%3E3.0.CO%3B2-0">10.1002/(SICI)1097-4687(200005)244:2<109::AID-JMOR2>3.0.CO;2-0</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/10761049">10761049</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Morphology&rft.atitle=Anatomy+and+histochemistry+of+flight+muscles+in+a+wing-propelled+diving+bird%2C+the+Atlantic+Puffin%2C+Fratercula+arctica&rft.volume=244&rft.issue=2&rft.pages=109-25&rft.date=2000&rft_id=info%3Adoi%2F10.1002%2F%28SICI%291097-4687%28200005%29244%3A2%3C109%3A%3AAID-JMOR2%3E3.0.CO%3B2-0&rft_id=info%3Apmid%2F10761049&rft.aulast=Kovacs&rft.aufirst=Christopher+E.&rft.au=Meyers%2C+RA&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-HAA-222"><a href="#cite_ref-HAA_222-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBaumel1993" class="citation book cs1">Baumel, Julian J. (1993). Handbook of Avian Anatomy: Nomina Anatomica Avium. Nuttall Ornithological Club.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+Avian+Anatomy%3A+Nomina+Anatomica+Avium&rft.pub=Nuttall+Ornithological+Club&rft.date=1993&rft.aulast=Baumel&rft.aufirst=Julian+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-223"><a href="#cite_ref-223">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWhitney1906" class="citation book cs1">Whitney, William Dwight (1906). <a rel="nofollow" class="external text" href="https://archive.org/details/bub_gb_U_FOAAAAYAAJ">The Century Dictionary and Cyclopedia</a>. Entry for "Feather". The Century Co. p. <a rel="nofollow" class="external text" href="https://archive.org/details/bub_gb_U_FOAAAAYAAJ/page/n624">2</a>, 164. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/825679">825679</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Century+Dictionary+and+Cyclopedia&rft.series=Entry+for+%22Feather%22&rft.pages=2%2C+164&rft.pub=The+Century+Co&rft.date=1906&rft_id=info%3Aoclcnum%2F825679&rft.aulast=Whitney&rft.aufirst=William+Dwight&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fbub_gb_U_FOAAAAYAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-224"><a href="#cite_ref-224">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBuckley1966" class="citation magazine cs1">Buckley, P. A. (January–December 1966). "Foot-paddling in Four American Gulls, with Comments on its Possible Function and Stimulation". Ethology. Vol. 23, no. 4. pp. 395–402. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/5992179">5992179</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Ethology&rft.atitle=Foot-paddling+in+Four+American+Gulls%2C+with+Comments+on+its+Possible+Function+and+Stimulation&rft.volume=23&rft.issue=4&rft.pages=395-402&rft.date=1966-01%2F1966-12&rft_id=info%3Apmid%2F5992179&rft.aulast=Buckley&rft.aufirst=P.+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-225"><a href="#cite_ref-225">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWalls1942" class="citation book cs1">Walls, Gordon L. (1942). <a rel="nofollow" class="external text" href="https://archive.org/details/vertebrateeyeits00wall/page/188">"Adaptations to Diurnal Activity"</a>. Bulletin: The Vertebrate Eye and its Adaptive Radiation. The Cranbrook Institute of Science. p. 188.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Adaptations+to+Diurnal+Activity&rft.btitle=Bulletin%3A+The+Vertebrate+Eye+and+its+Adaptive+Radiation&rft.pages=188&rft.pub=The+Cranbrook+Institute+of+Science&rft.date=1942&rft.aulast=Walls&rft.aufirst=Gordon+L.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fvertebrateeyeits00wall%2Fpage%2F188&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Holden2016-226"><a href="#cite_ref-Holden2016_226-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHolden2016" class="citation book cs1">Holden, Peter (2016). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=3XcDCwAAQBAJ&pg=PA245">RSPB Birds: their Hidden World</a>. London: Bloomsbury Publishing. p. 245. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4729-3224-2" title="Special:BookSources/978-1-4729-3224-2"><bdi>978-1-4729-3224-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=RSPB+Birds%3A+their+Hidden+World&rft.place=London&rft.pages=245&rft.pub=Bloomsbury+Publishing&rft.date=2016&rft.isbn=978-1-4729-3224-2&rft.aulast=Holden&rft.aufirst=Peter&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D3XcDCwAAQBAJ%26pg%3DPA245&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-227"><a href="#cite_ref-227">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, p. 61 </li> <li id="cite_note-Gill84-228"><a href="#cite_ref-Gill84_228-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 84 </li> <li id="cite_note-229"><a href="#cite_ref-229">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDavison1982" class="citation magazine cs1">Davison, G. W. H. (November 1982). <a rel="nofollow" class="external text" href="https://www.biodiversitylibrary.org/item/123798#page/103/mode/1up">"Notes on the Extinct Argusianus Bipuntatus"</a>. Bulletin of the British Ornithologists' Club. Vol. 103, no. 3. p. 87. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170805190417/http://www.biodiversitylibrary.org/item/123798#page/103/mode/1up">Archived</a> from the original on 2017-08-05. Retrieved 2018-01-14.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Bulletin+of+the+British+Ornithologists%27+Club&rft.atitle=Notes+on+the+Extinct+Argusianus+Bipuntatus&rft.volume=103&rft.issue=3&rft.pages=87&rft.date=1982-11&rft.aulast=Davison&rft.aufirst=G.+W.+H.&rft_id=https%3A%2F%2Fwww.biodiversitylibrary.org%2Fitem%2F123798%23page%2F103%2Fmode%2F1up&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Videler2006-230"><a href="#cite_ref-Videler2006_230-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVideler2005" class="citation book cs1">Videler, John J. (2005). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=5Xr9NZdgzP0C&pg=PA58">Avian Flight</a>. OUP Oxford. pp. 58–61. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-929992-8" title="Special:BookSources/978-0-19-929992-8"><bdi>978-0-19-929992-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Avian+Flight&rft.pages=58-61&rft.pub=OUP+Oxford&rft.date=2005&rft.isbn=978-0-19-929992-8&rft.aulast=Videler&rft.aufirst=John+J.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D5Xr9NZdgzP0C%26pg%3DPA58&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Campbell533-231"><a href="#cite_ref-Campbell533_231-0">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 533 </li> <li id="cite_note-Grouw2013-232"><a href="#cite_ref-Grouw2013_232-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGrouw2013" class="citation book cs1">Grouw, Katrina Van (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=wYrPAwRh95gC&pg=PA58">The Unfeathered Bird</a>. Princeton University Press. p. 58. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-691-15134-2" title="Special:BookSources/978-0-691-15134-2"><bdi>978-0-691-15134-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Unfeathered+Bird&rft.pages=58&rft.pub=Princeton+University+Press&rft.date=2013&rft.isbn=978-0-691-15134-2&rft.aulast=Grouw&rft.aufirst=Katrina+Van&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DwYrPAwRh95gC%26pg%3DPA58&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-233"><a href="#cite_ref-233">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAlvarezaSanchezAngulo2005" class="citation magazine cs1">Alvareza F, Sanchez CS, Angulo S (2005). "The frontal shield of the moorhen: sex differences and relationship with body condition". Ethology, Ecology & Evolution. Vol. 17, no. 2. pp. 135–148. <a href="/wiki/CiteSeerX_(identifier)" class="mw-redirect" title="CiteSeerX (identifier)">CiteSeerX</a> <a rel="nofollow" class="external text" href="https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.158.6095">10.1.1.158.6095</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1080%2F08927014.2005.9522603">10.1080/08927014.2005.9522603</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:85892241">85892241</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Ethology%2C+Ecology+%26+Evolution&rft.atitle=The+frontal+shield+of+the+moorhen%3A+sex+differences+and+relationship+with+body+condition&rft.volume=17&rft.issue=2&rft.pages=135-148&rft.date=2005&rft_id=https%3A%2F%2Fciteseerx.ist.psu.edu%2Fviewdoc%2Fsummary%3Fdoi%3D10.1.1.158.6095%23id-name%3DCiteSeerX&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A85892241%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1080%2F08927014.2005.9522603&rft.aulast=Alvareza&rft.aufirst=F&rft.au=Sanchez%2C+CS&rft.au=Angulo%2C+S&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-234"><a href="#cite_ref-234">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGullion1951" class="citation magazine cs1">Gullion, Gordon W. (1951). "The frontal shield of the American Coot". Wilson Bulletin. Vol. 63, no. 3. pp. 157–166.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Wilson+Bulletin&rft.atitle=The+frontal+shield+of+the+American+Coot&rft.volume=63&rft.issue=3&rft.pages=157-166&rft.date=1951&rft.aulast=Gullion&rft.aufirst=Gordon+W.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Gill134-136-235"><a href="#cite_ref-Gill134-136_235-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, pp. 134–136 </li> <li id="cite_note-236"><a href="#cite_ref-236">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFReference-OED-Furcula" class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://www.oed.com/search/dictionary/?q=Furcula">"Furcula"</a>. <a href="/wiki/Oxford_English_Dictionary" title="Oxford English Dictionary">Oxford English Dictionary</a> (Online ed.). <a href="/wiki/Oxford_University_Press" title="Oxford University Press">Oxford University Press</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Furcula&rft.btitle=Oxford+English+Dictionary&rft.edition=Online&rft.pub=Oxford+University+Press&rft_id=https%3A%2F%2Fwww.oed.com%2Fsearch%2Fdictionary%2F%3Fq%3DFurcula&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> (Subscription or <a rel="nofollow" class="external text" href="https://www.oed.com/public/login/loggingin#withyourlibrary">participating institution membership</a> required.) </li> <li id="cite_note-Newman-237">^ <a href="#cite_ref-Newman_237-0">a</a> <a href="#cite_ref-Newman_237-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNewman2000" class="citation book cs1">Newman, Kenneth B. (2000). Newman's birds by colour. Struik. p. 14. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-86872-448-2" title="Special:BookSources/978-1-86872-448-2"><bdi>978-1-86872-448-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Newman%27s+birds+by+colour&rft.pages=14&rft.pub=Struik&rft.date=2000&rft.isbn=978-1-86872-448-2&rft.aulast=Newman&rft.aufirst=Kenneth+B.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-238"><a href="#cite_ref-238">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWheelwright1985" class="citation magazine cs1">Wheelwright, NT (1985). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160408055802/http://www.bowdoin.edu/faculty/n/nwheelwr/pdf/FruitsizeGape.pdf">"Fruit size, gape width and the diets of fruit-eating birds"</a> (PDF). Ecology. Vol. 66, no. 3. pp. 808–818. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F1940542">10.2307/1940542</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/1940542">1940542</a>. Archived from <a rel="nofollow" class="external text" href="http://www.bowdoin.edu/faculty/n/nwheelwr/pdf/FruitsizeGape.pdf">the original</a> (PDF) on April 8, 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Ecology&rft.atitle=Fruit+size%2C+gape+width+and+the+diets+of+fruit-eating+birds&rft.volume=66&rft.issue=3&rft.pages=808-818&rft.date=1985&rft_id=info%3Adoi%2F10.2307%2F1940542&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F1940542%23id-name%3DJSTOR&rft.aulast=Wheelwright&rft.aufirst=NT&rft_id=http%3A%2F%2Fwww.bowdoin.edu%2Ffaculty%2Fn%2Fnwheelwr%2Fpdf%2FFruitsizeGape.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-239"><a href="#cite_ref-239">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFZickefoose2014" class="citation web cs1">Zickefoose, Julie (July 25, 2014). <a rel="nofollow" class="external text" href="http://www.birdwatchersdigest.com/site/backyard_birds/bird_Id/mystery_birds.aspx">"Backyard Mystery Birds"</a>. Bird Watcher's Digest. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20101213051538/http://birdwatchersdigest.com/site/backyard_birds/bird_Id/mystery_birds.aspx">Archived</a> from the original on December 13, 2010. Retrieved January 29, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Backyard+Mystery+Birds&rft.pub=Bird+Watcher%27s+Digest&rft.date=2014-07-25&rft.aulast=Zickefoose&rft.aufirst=Julie&rft_id=http%3A%2F%2Fwww.birdwatchersdigest.com%2Fsite%2Fbackyard_birds%2Fbird_Id%2Fmystery_birds.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-240"><a href="#cite_ref-240">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, p. 71 </li> <li id="cite_note-Pettingill77-241"><a href="#cite_ref-Pettingill77_241-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 77 </li> <li id="cite_note-Nyakupfuka2013-242"><a href="#cite_ref-Nyakupfuka2013_242-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNyakupfuka2013" class="citation book cs1">Nyakupfuka, Andrew (April 3, 2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=G7UEER5uKwQC&pg=PA120">Global Delicacies: Diversity, Exotic, Strange, Weird, Relativism</a>. Balboa Press. p. 120. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4525-6791-4" title="Special:BookSources/978-1-4525-6791-4"><bdi>978-1-4525-6791-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Global+Delicacies%3A+Diversity%2C+Exotic%2C+Strange%2C+Weird%2C+Relativism.&rft.pages=120&rft.pub=Balboa+Press&rft.date=2013-04-03&rft.isbn=978-1-4525-6791-4&rft.aulast=Nyakupfuka&rft.aufirst=Andrew&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DG7UEER5uKwQC%26pg%3DPA120&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-243"><a href="#cite_ref-243">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPetersonMountfortHollom1954" class="citation book cs1"><a href="/wiki/Roger_Tory_Peterson" title="Roger Tory Peterson">Peterson, Roger</a>; Mountfort, Guy; Hollom, P.A.D. (1954). A Field Guide to the Birds of Britain and Europe. London: Collins. p. 251.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Field+Guide+to+the+Birds+of+Britain+and+Europe&rft.place=London&rft.pages=251&rft.pub=Collins&rft.date=1954&rft.aulast=Peterson&rft.aufirst=Roger&rft.au=Mountfort%2C+Guy&rft.au=Hollom%2C+P.A.D.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Dunn-244"><a href="#cite_ref-Dunn_244-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDunnGarrett1997" class="citation book cs1">Dunn, Jon; Garrett, Kimball (1997). Warblers. New York: <a href="/wiki/Peterson_Field_Guides" title="Peterson Field Guides">Peterson Field Guides</a>. pp. 18, 377, 437, 470, 551. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-395-78321-4" title="Special:BookSources/978-0-395-78321-4"><bdi>978-0-395-78321-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Warblers&rft.place=New+York&rft.pages=18%2C+377%2C+437%2C+470%2C+551&rft.pub=Peterson+Field+Guides&rft.date=1997&rft.isbn=978-0-395-78321-4&rft.aulast=Dunn&rft.aufirst=Jon&rft.au=Garrett%2C+Kimball&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-245"><a href="#cite_ref-245">^</a> <a href="#CITEREFSibley,_et_al.2001">Sibley, et al. 2001</a>, pp. 360–361, 377, 390, 404, 427, 435–436, 441, 451, 545 </li> <li id="cite_note-Campbell254-246">^ <a href="#cite_ref-Campbell254_246-0">a</a> <a href="#cite_ref-Campbell254_246-1">b</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 254 </li> <li id="cite_note-247"><a href="#cite_ref-247">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRussellWolfeHertzStarr2008" class="citation book cs1">Russell, Peter J.; Wolfe, Stephen L.; Hertz, Paul E.; Starr, Cecie (2008). Biology: The Dynamic Science. Vol. 2. Belmont, CA: Thomson Brooks/Cole. p. 1255. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-495-01033-3" title="Special:BookSources/978-0-495-01033-3"><bdi>978-0-495-01033-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Biology%3A+The+Dynamic+Science&rft.place=Belmont%2C+CA&rft.pages=1255&rft.pub=Thomson+Brooks%2FCole&rft.date=2008&rft.isbn=978-0-495-01033-3&rft.aulast=Russell&rft.aufirst=Peter+J.&rft.au=Wolfe%2C+Stephen+L.&rft.au=Hertz%2C+Paul+E.&rft.au=Starr%2C+Cecie&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-248"><a href="#cite_ref-248">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHowell2002" class="citation book cs1">Howell, Steve N. G. (2002). Hummingbirds of North America: The Photographic Guide. Academic Press. p. 1. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-356955-4" title="Special:BookSources/978-0-12-356955-4"><bdi>978-0-12-356955-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Hummingbirds+of+North+America%3A+The+Photographic+Guide&rft.pages=1&rft.pub=Academic+Press&rft.date=2002&rft.isbn=978-0-12-356955-4&rft.aulast=Howell&rft.aufirst=Steve+N.+G.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-249"><a href="#cite_ref-249">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRidgelyTudorBrown1994" class="citation book cs1">Ridgely, Robert S.; Tudor, Guy; Brown, William L. (1994). The Birds of South America: The suboscine passerines. Austin, TX: University of Texas Press. p. 771. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-292-77063-8" title="Special:BookSources/978-0-292-77063-8"><bdi>978-0-292-77063-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Birds+of+South+America%3A+The+suboscine+passerines&rft.place=Austin%2C+TX&rft.pages=771&rft.pub=University+of+Texas+Press&rft.date=1994&rft.isbn=978-0-292-77063-8&rft.aulast=Ridgely&rft.aufirst=Robert+S.&rft.au=Tudor%2C+Guy&rft.au=Brown%2C+William+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-250"><a href="#cite_ref-250">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChristensen1970" class="citation book cs1">Christensen, Glen C. (1970). The Chukar Partridge: Its Introduction, Life History and Management. Reno, NV: Nevada Department of Fish and Game. p. 33.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Chukar+Partridge%3A+Its+Introduction%2C+Life+History+and+Management&rft.place=Reno%2C+NV&rft.pages=33&rft.pub=Nevada+Department+of+Fish+and+Game&rft.date=1970&rft.aulast=Christensen&rft.aufirst=Glen+C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-251"><a href="#cite_ref-251">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSundstorm2015" class="citation podcast cs1">Sundstorm, Bob (8 April 2015). <a rel="nofollow" class="external text" href="http://www.audubon.org/news/a-hummingbirds-shining-armor">"A Hummingbird's Shining Armor"</a>. BirdNote (Podcast). Narrated by Mary McCann. BirdNote. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20171227125137/http://www.audubon.org/news/a-hummingbirds-shining-armor">Archived</a> from the original on 27 December 2017. Retrieved 26 December 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=A+Hummingbird%27s+Shining+Armor&rft.pub=BirdNote&rft.date=2015-04-08&rft.aulast=Sundstorm&rft.aufirst=Bob&rft_id=http%3A%2F%2Fwww.audubon.org%2Fnews%2Fa-hummingbirds-shining-armor&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-MorrisPress1992-252"><a href="#cite_ref-MorrisPress1992_252-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMorrisAcademic_Press1992" class="citation book cs1">Morris, Christopher G.; Academic Press (1992). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=nauWlPTBcjIC&pg=PA971">Academic Press Dictionary of Science and Technology</a>. Gulf Professional Publishing. p. 971. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-200400-1" title="Special:BookSources/978-0-12-200400-1"><bdi>978-0-12-200400-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Academic+Press+Dictionary+of+Science+and+Technology&rft.pages=971&rft.pub=Gulf+Professional+Publishing&rft.date=1992&rft.isbn=978-0-12-200400-1&rft.aulast=Morris&rft.aufirst=Christopher+G.&rft.au=Academic+Press&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DnauWlPTBcjIC%26pg%3DPA971&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-DayRiepe2015-253"><a href="#cite_ref-DayRiepe2015_253-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDayRiepe2015" class="citation book cs1">Day, Leslie; Riepe, Don (2015). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=EwTHCQAAQBAJ&pg=PT36">Field Guide to the Neighborhood Birds of New York City</a>. JHU Press. p. 36. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4214-1617-5" title="Special:BookSources/978-1-4214-1617-5"><bdi>978-1-4214-1617-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Field+Guide+to+the+Neighborhood+Birds+of+New+York+City&rft.pages=36&rft.pub=JHU+Press&rft.date=2015&rft.isbn=978-1-4214-1617-5&rft.aulast=Day&rft.aufirst=Leslie&rft.au=Riepe%2C+Don&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DEwTHCQAAQBAJ%26pg%3DPT36&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Lederer2016-254"><a href="#cite_ref-Lederer2016_254-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLederer2016" class="citation book cs1">Lederer, Roger (2016). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=v9YlDAAAQBAJ&pg=PT157">Beaks, Bones and Bird Songs: How the Struggle for Survival Has Shaped Birds and Their Behavior</a>. Timber Press. p. 157. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-60469-752-0" title="Special:BookSources/978-1-60469-752-0"><bdi>978-1-60469-752-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Beaks%2C+Bones+and+Bird+Songs%3A+How+the+Struggle+for+Survival+Has+Shaped+Birds+and+Their+Behavior&rft.pages=157&rft.pub=Timber+Press&rft.date=2016&rft.isbn=978-1-60469-752-0&rft.aulast=Lederer&rft.aufirst=Roger&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dv9YlDAAAQBAJ%26pg%3DPT157&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-FOOTNOTELovetteFitzpatrick2016181-255">^ <a href="#cite_ref-FOOTNOTELovetteFitzpatrick2016181_255-0">a</a> <a href="#cite_ref-FOOTNOTELovetteFitzpatrick2016181_255-1">b</a> <a href="#CITEREFLovetteFitzpatrick2016">Lovette & Fitzpatrick 2016</a>, p. 181. </li> <li id="cite_note-256"><a href="#cite_ref-256">^</a> <a href="#CITEREFFeduccia1999">Feduccia 1999</a>, p. 13 </li> <li id="cite_note-257"><a href="#cite_ref-257">^</a> <a href="#CITEREFBird2004">Bird 2004</a>, p. 4 </li> <li id="cite_note-OdumKuenzler1955-258"><a href="#cite_ref-OdumKuenzler1955_258-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOdumKuenzler1955" class="citation magazine cs1">Odum, Eugene P.; Kuenzler, Edward J. (1955). "Measurement of territory and home range size in birds". The Auk. Vol. 72, no. 2. pp. 128–137. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F4081419">10.2307/4081419</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0004-8038">0004-8038</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/4081419">4081419</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Auk&rft.atitle=Measurement+of+territory+and+home+range+size+in+birds&rft.volume=72&rft.issue=2&rft.pages=128-137&rft.date=1955&rft.issn=0004-8038&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F4081419%23id-name%3DJSTOR&rft_id=info%3Adoi%2F10.2307%2F4081419&rft.aulast=Odum&rft.aufirst=Eugene+P.&rft.au=Kuenzler%2C+Edward+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Elphick135-136-259"><a href="#cite_ref-Elphick135-136_259-0">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, pp. 135–136 </li> <li id="cite_note-HarestadBunnel1979-260"><a href="#cite_ref-HarestadBunnel1979_260-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHarestadBunnel1979" class="citation magazine cs1">Harestad, A. S.; Bunnel, F. L. (1979). "Home range and body weight--a reevaluation". Ecology. Vol. 60, no. 2. pp. 389–402. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F1937667">10.2307/1937667</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0012-9658">0012-9658</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/1937667">1937667</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Ecology&rft.atitle=Home+range+and+body+weight--a+reevaluation&rft.volume=60&rft.issue=2&rft.pages=389-402&rft.date=1979&rft.issn=0012-9658&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F1937667%23id-name%3DJSTOR&rft_id=info%3Adoi%2F10.2307%2F1937667&rft.aulast=Harestad&rft.aufirst=A.+S.&rft.au=Bunnel%2C+F.+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-261"><a href="#cite_ref-261">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, pp. 98, 190 </li> <li id="cite_note-Elphick25-6-262">^ <a href="#cite_ref-Elphick25-6_262-0">a</a> <a href="#cite_ref-Elphick25-6_262-1">b</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, pp. 25–26 </li> <li id="cite_note-JungNaleway2016-263"><a href="#cite_ref-JungNaleway2016_263-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJungNalewayYaraghiHerrera2016" class="citation magazine cs1">Jung, Jae-Young; Naleway, Steven E.; Yaraghi, Nicholas A.; Herrera, Steven; Sherman, Vincent R.; Bushong, Eric A.; Ellisman, Mark H.; Kisailus, David; McKittrick, Joanna (2016). "Structural analysis of the tongue and hyoid apparatus in a woodpecker". Acta Biomaterialia. Vol. 37. pp. 1–13. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.actbio.2016.03.030">10.1016/j.actbio.2016.03.030</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1742-7061">1742-7061</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5063634">5063634</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/27000554">27000554</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Acta+Biomaterialia&rft.atitle=Structural+analysis+of+the+tongue+and+hyoid+apparatus+in+a+woodpecker&rft.volume=37&rft.pages=1-13&rft.date=2016&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC5063634%23id-name%3DPMC&rft.issn=1742-7061&rft_id=info%3Apmid%2F27000554&rft_id=info%3Adoi%2F10.1016%2Fj.actbio.2016.03.030&rft.aulast=Jung&rft.aufirst=Jae-Young&rft.au=Naleway%2C+Steven+E.&rft.au=Yaraghi%2C+Nicholas+A.&rft.au=Herrera%2C+Steven&rft.au=Sherman%2C+Vincent+R.&rft.au=Bushong%2C+Eric+A.&rft.au=Ellisman%2C+Mark+H.&rft.au=Kisailus%2C+David&rft.au=McKittrick%2C+Joanna&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-264"><a href="#cite_ref-264">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPycraft1911" class="citation encyclopaedia cs1">Pycraft, William Plane (1911). <a class="external text" href="https://en.wikisource.org/wiki/1911_Encyclop%C3%A6dia_Britannica/Feather">"Feather" </a>. In <a href="/wiki/Hugh_Chisholm" title="Hugh Chisholm">Chisholm, Hugh</a> (ed.). <a href="/wiki/Encyclop%C3%A6dia_Britannica_Eleventh_Edition" title="Encyclopædia Britannica Eleventh Edition">Encyclopædia Britannica</a>. Vol. 10 (11th ed.). Cambridge University Press. p. 227.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Feather&rft.btitle=Encyclop%C3%A6dia+Britannica&rft.pages=227&rft.edition=11th&rft.pub=Cambridge+University+Press&rft.date=1911&rft.aulast=Pycraft&rft.aufirst=William+Plane&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-265"><a href="#cite_ref-265">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDuerden1922" class="citation magazine cs1">Duerden, J.E. (July 1922). <a rel="nofollow" class="external text" href="http://journals.co.za/content/jdagr/5/1/AJA0000020_1267">"The origin of feathers from the scales of reptiles"</a>. Journal of the Department of Agriculture. Vol. 5, no. 1. p. 67. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170418082840/http://journals.co.za/content/jdagr/5/1/AJA0000020_1267">Archived</a> from the original on 2017-04-18. Retrieved 2017-04-17.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+the+Department+of+Agriculture&rft.atitle=The+origin+of+feathers+from+the+scales+of+reptiles&rft.volume=5&rft.issue=1&rft.pages=67&rft.date=1922-07&rft.aulast=Duerden&rft.aufirst=J.E.&rft_id=http%3A%2F%2Fjournals.co.za%2Fcontent%2Fjdagr%2F5%2F1%2FAJA0000020_1267&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Scott43-266"><a href="#cite_ref-Scott43_266-0">^</a> <a href="#CITEREFScott2010">Scott 2010</a>, p. 43 </li> <li id="cite_note-Zimmer2000-267"><a href="#cite_ref-Zimmer2000_267-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFZimmer2000" class="citation book cs1">Zimmer, Kevin J. (2000). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=TMtB8CG767EC&pg=PA47">Birding in the American West: A Handbook</a>. Cornell University Press. p. 47. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8014-8328-8" title="Special:BookSources/978-0-8014-8328-8"><bdi>978-0-8014-8328-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birding+in+the+American+West%3A+A+Handbook&rft.pages=47&rft.pub=Cornell+University+Press&rft.date=2000&rft.isbn=978-0-8014-8328-8&rft.aulast=Zimmer&rft.aufirst=Kevin+J.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DTMtB8CG767EC%26pg%3DPA47&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-268"><a href="#cite_ref-268">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcDonald1996" class="citation magazine cs1">McDonald, David (March 1996). <a rel="nofollow" class="external text" href="https://www.scribd.com/doc/16209649/The-etymology-of-jizz">"The Etymology of Jizz"</a>. Canberra Bird Notes. Vol. 21, no. 1. pp. 2–11. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160418141654/https://www.scribd.com/doc/16209649/The-etymology-of-jizz">Archived</a> from the original on 2016-04-18. Retrieved 2017-09-09.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Canberra+Bird+Notes&rft.atitle=The+Etymology+of+Jizz&rft.volume=21&rft.issue=1&rft.pages=2-11&rft.date=1996-03&rft.aulast=McDonald&rft.aufirst=David&rft_id=https%3A%2F%2Fwww.scribd.com%2Fdoc%2F16209649%2FThe-etymology-of-jizz&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-269"><a href="#cite_ref-269">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFReference-OED-Jizz" class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://www.oed.com/search/dictionary/?q=Jizz">"Jizz"</a>. <a href="/wiki/Oxford_English_Dictionary" title="Oxford English Dictionary">Oxford English Dictionary</a> (Online ed.). <a href="/wiki/Oxford_University_Press" title="Oxford University Press">Oxford University Press</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Jizz&rft.btitle=Oxford+English+Dictionary&rft.edition=Online&rft.pub=Oxford+University+Press&rft_id=https%3A%2F%2Fwww.oed.com%2Fsearch%2Fdictionary%2F%3Fq%3DJizz&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> (Subscription or <a rel="nofollow" class="external text" href="https://www.oed.com/public/login/loggingin#withyourlibrary">participating institution membership</a> required.) </li> <li id="cite_note-270"><a href="#cite_ref-270">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDooley2005" class="citation book cs1">Dooley, Sean (2005). The Big Twitch. Allen & Unwin. p. 78. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-74114-528-1" title="Special:BookSources/978-1-74114-528-1"><bdi>978-1-74114-528-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Big+Twitch&rft.pages=78&rft.pub=Allen+%26+Unwin&rft.date=2005&rft.isbn=978-1-74114-528-1&rft.aulast=Dooley&rft.aufirst=Sean&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Madden2011-271"><a href="#cite_ref-Madden2011_271-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDave_Madden2011" class="citation book cs1">Dave Madden (August 2, 2011). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Uf11AjcpIpMC&pg=PA127">The Authentic Animal: Inside the Odd and Obsessive World of Taxidermy</a>. St. Martin's Press. pp. 127–. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4299-8762-2" title="Special:BookSources/978-1-4299-8762-2"><bdi>978-1-4299-8762-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Authentic+Animal%3A+Inside+the+Odd+and+Obsessive+World+of+Taxidermy&rft.pages=127-&rft.pub=St.+Martin%27s+Press&rft.date=2011-08-02&rft.isbn=978-1-4299-8762-2&rft.au=Dave+Madden&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DUf11AjcpIpMC%26pg%3DPA127&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Harrop2004-272"><a href="#cite_ref-Harrop2004_272-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHugh_Harrop2004" class="citation book cs1">Hugh Harrop (2004). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Ex0XAQAAIAAJ">Shetland sea mammal report 2003</a>. Shetland Sea Mammal Group.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Shetland+sea+mammal+report+2003&rft.pub=Shetland+Sea+Mammal+Group&rft.date=2004&rft.au=Hugh+Harrop&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DEx0XAQAAIAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Tyzack2013-273"><a href="#cite_ref-Tyzack2013_273-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAndrew_Tyzack2013" class="citation book cs1">Andrew Tyzack (June 30, 2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=HIR8AwAAQBAJ&pg=PT147">Drawing and Painting Insects</a>. Crowood Press, Limited. pp. 147–. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-84797-625-3" title="Special:BookSources/978-1-84797-625-3"><bdi>978-1-84797-625-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Drawing+and+Painting+Insects&rft.pages=147-&rft.pub=Crowood+Press%2C+Limited&rft.date=2013-06-30&rft.isbn=978-1-84797-625-3&rft.au=Andrew+Tyzack&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DHIR8AwAAQBAJ%26pg%3DPT147&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-274"><a href="#cite_ref-274">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCummins1996" class="citation web cs1">Cummins, Jim (April 1, 1996). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20050211095240/http://numbat.murdoch.edu.au/Anatomy/avian/avian2.html">"Anatomy of Flight"</a>. Archived from the original on February 11, 2005. Retrieved March 14, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Anatomy+of+Flight&rft.date=1996-04-01&rft.aulast=Cummins&rft.aufirst=Jim&rft_id=http%3A%2F%2Fnumbat.murdoch.edu.au%2FAnatomy%2Favian%2Favian2.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"><code class="cs1-code">{{<a href="/wiki/Template:Cite_web" title="Template:Cite web">cite web</a>}}</code>: CS1 maint: bot: original URL status unknown (<a href="/wiki/Category:CS1_maint:_bot:_original_URL_status_unknown" title="Category:CS1 maint: bot: original URL status unknown">link</a>) </li> <li id="cite_note-275"><a href="#cite_ref-275">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRamel" class="citation web cs1">Ramel, Gordon. <a rel="nofollow" class="external text" href="http://www.earthlife.net/birds/anatomy.html">"The Anatomy of Birds"</a>. Earth-Life Web Productions. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20050207193812/http://www.earthlife.net/birds/anatomy.html">Archived</a> from the original on February 7, 2005. Retrieved March 14, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=The+Anatomy+of+Birds&rft.pub=Earth-Life+Web+Productions&rft.aulast=Ramel&rft.aufirst=Gordon&rft_id=http%3A%2F%2Fwww.earthlife.net%2Fbirds%2Fanatomy.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Elphick129-276"><a href="#cite_ref-Elphick129_276-0">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, p. 129 </li> <li id="cite_note-Fiske-277"><a href="#cite_ref-Fiske_277-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFiskeRintamäkiKarvonen1998" class="citation magazine cs1">Fiske, Peder; Rintamäki, Pekka T.; Karvonen, Eevi (January 1998). "Mating success in lekking males: a meta-analysis". Behavioral Ecology. Vol. 9, no. 4. pp. 328–338. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fbeheco%2F9.4.328">10.1093/beheco/9.4.328</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Behavioral+Ecology&rft.atitle=Mating+success+in+lekking+males%3A+a+meta-analysis&rft.volume=9&rft.issue=4&rft.pages=328-338&rft.date=1998-01&rft_id=info%3Adoi%2F10.1093%2Fbeheco%2F9.4.328&rft.aulast=Fiske&rft.aufirst=Peder&rft.au=Rintam%C3%A4ki%2C+Pekka+T.&rft.au=Karvonen%2C+Eevi&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Elphick151-278">^ <a href="#cite_ref-Elphick151_278-0">a</a> <a href="#cite_ref-Elphick151_278-1">b</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, p. 151 </li> <li id="cite_note-279"><a href="#cite_ref-279">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMayr2005" class="citation magazine cs1">Mayr, Gerald (2005). <a rel="nofollow" class="external text" href="http://www.senckenberg.de/files/content/forschung/abteilung/terrzool/ornithologie/chascacocolius.pdf">"A new eocene Chascacocolius-like mousebird (Aves: Coliiformes) with a remarkable gaping adaptation"</a> (PDF). Organisms, Diversity & Evolution. Vol. 5, no. 3. pp. 167–171. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.ode.2004.10.013">10.1016/j.ode.2004.10.013</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160411194714/http://www.senckenberg.de/files/content/forschung/abteilung/terrzool/ornithologie/chascacocolius.pdf">Archived</a> (PDF) from the original on 2016-04-11. Retrieved 2017-01-19.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Organisms%2C+Diversity+%26+Evolution&rft.atitle=A+new+eocene+Chascacocolius-like+mousebird+%28Aves%3A+Coliiformes%29+with+a+remarkable+gaping+adaptation&rft.volume=5&rft.issue=3&rft.pages=167-171&rft.date=2005&rft_id=info%3Adoi%2F10.1016%2Fj.ode.2004.10.013&rft.aulast=Mayr&rft.aufirst=Gerald&rft_id=http%3A%2F%2Fwww.senckenberg.de%2Ffiles%2Fcontent%2Fforschung%2Fabteilung%2Fterrzool%2Fornithologie%2Fchascacocolius.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-280"><a href="#cite_ref-280">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKaiser2007" class="citation book cs1">Kaiser, Gary W. (2007). The Inner Bird: Anatomy and Evolution. Vancouver, BC: UBC Press. p. 19. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7748-1343-3" title="Special:BookSources/978-0-7748-1343-3"><bdi>978-0-7748-1343-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Inner+Bird%3A+Anatomy+and+Evolution&rft.place=Vancouver%2C+BC&rft.pages=19&rft.pub=UBC+Press&rft.date=2007&rft.isbn=978-0-7748-1343-3&rft.aulast=Kaiser&rft.aufirst=Gary+W.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-281"><a href="#cite_ref-281">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStokesStokes2003" class="citation book cs1">Stokes, Donald W. & Stokes, Lillian Q. (2003). Stokes Backyard Bird Book. Emmaus, PA: Rodale. p. 141. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-57954-864-4" title="Special:BookSources/1-57954-864-4"><bdi>1-57954-864-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Stokes+Backyard+Bird+Book&rft.place=Emmaus%2C+PA&rft.pages=141&rft.pub=Rodale&rft.date=2003&rft.isbn=1-57954-864-4&rft.aulast=Stokes&rft.aufirst=Donald+W.&rft.au=Stokes%2C+Lillian+Q.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-FOOTNOTECampbellLack1985101-282"><a href="#cite_ref-FOOTNOTECampbellLack1985101_282-0">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 101. </li> <li id="cite_note-FOOTNOTECampbellLack1985101–105-283"><a href="#cite_ref-FOOTNOTECampbellLack1985101–105_283-0">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, pp. 101–105. </li> <li id="cite_note-FOOTNOTESibley,_et_al.200155–59-284"><a href="#cite_ref-FOOTNOTESibley,_et_al.200155–59_284-0">^</a> <a href="#CITEREFSibley,_et_al.2001">Sibley, et al. 2001</a>, pp. 55–59. </li> <li id="cite_note-Kricher2020-285"><a href="#cite_ref-Kricher2020_285-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKricher2020" class="citation book cs1">Kricher, John (2020). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Lce_DwAAQBAJ&pg=PA20">Peterson Reference Guide to Bird Behavior</a>. Houghton Mifflin Harcourt. p. 20. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-328-78736-1" title="Special:BookSources/978-1-328-78736-1"><bdi>978-1-328-78736-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Peterson+Reference+Guide+to+Bird+Behavior&rft.pages=20&rft.pub=Houghton+Mifflin+Harcourt&rft.date=2020&rft.isbn=978-1-328-78736-1&rft.aulast=Kricher&rft.aufirst=John&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DLce_DwAAQBAJ%26pg%3DPA20&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill232–234-286"><a href="#cite_ref-Pettingill232–234_286-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, pp. 232–234 </li> <li id="cite_note-Berthold-287"><a href="#cite_ref-Berthold_287-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBertholdBauerWesthead2001" class="citation book cs1">Berthold, Peter; Bauer, Hans-Günther; Westhead, Valerie (2001). Bird Migration: A General Survey. Oxford: Oxford University Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-850787-1" title="Special:BookSources/978-0-19-850787-1"><bdi>978-0-19-850787-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Bird+Migration%3A+A+General+Survey&rft.place=Oxford&rft.pub=Oxford+University+Press&rft.date=2001&rft.isbn=978-0-19-850787-1&rft.aulast=Berthold&rft.aufirst=Peter&rft.au=Bauer%2C+Hans-G%C3%BCnther&rft.au=Westhead%2C+Valerie&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Seker-288"><a href="#cite_ref-Seker_288-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSekercioglu2007" class="citation magazine cs1">Sekercioglu, C.H. (2007). "Conservation ecology: area trumps mobility in fragment bird extinctions". Current Biology. Vol. 17, no. 8. pp. 283–286. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.cub.2007.04.045">10.1016/j.cub.2007.04.045</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/1743770">1743770</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Current+Biology&rft.atitle=Conservation+ecology%3A+area+trumps+mobility+in+fragment+bird+extinctions&rft.volume=17&rft.issue=8&rft.pages=283-286&rft.date=2007&rft_id=info%3Adoi%2F10.1016%2Fj.cub.2007.04.045&rft_id=info%3Apmid%2F1743770&rft.aulast=Sekercioglu&rft.aufirst=C.H.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Rolland-289"><a href="#cite_ref-Rolland_289-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRollandJiguetJønssonCondamine2014" class="citation magazine cs1">Rolland, Jonathan; Jiguet, Frédéric; Jønsson, Knud Andreas; Condamine, Fabien L.; Morlon, Hélène (2014). "Settling down of seasonal migrants promotes bird diversification". Proceedings of the Royal Society B. Vol. 281, no. 1784. p. 20140473. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1098%2Frspb.2014.0473">10.1098/rspb.2014.0473</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4043101">4043101</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/24759866">24759866</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Proceedings+of+the+Royal+Society+B&rft.atitle=Settling+down+of+seasonal+migrants+promotes+bird+diversification&rft.volume=281&rft.issue=1784&rft.pages=20140473&rft.date=2014&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4043101%23id-name%3DPMC&rft_id=info%3Apmid%2F24759866&rft_id=info%3Adoi%2F10.1098%2Frspb.2014.0473&rft.aulast=Rolland&rft.aufirst=Jonathan&rft.au=Jiguet%2C+Fr%C3%A9d%C3%A9ric&rft.au=J%C3%B8nsson%2C+Knud+Andreas&rft.au=Condamine%2C+Fabien+L.&rft.au=Morlon%2C+H%C3%A9l%C3%A8ne&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-newton-290"><a href="#cite_ref-newton_290-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNewton2008" class="citation book cs1">Newton, Ian (2008). The Migration Ecology of Birds. Elsevier. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-517367-4" title="Special:BookSources/978-0-12-517367-4"><bdi>978-0-12-517367-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Migration+Ecology+of+Birds&rft.pub=Elsevier&rft.date=2008&rft.isbn=978-0-12-517367-4&rft.aulast=Newton&rft.aufirst=Ian&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-291"><a href="#cite_ref-291">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChan2001" class="citation magazine cs1">Chan, Ken (January 2001). "Partial migration in Australian landbirds: a review". Emu. Vol. 101, no. 4. pp. 281–292. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1071%2FMU00034">10.1071/MU00034</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Emu&rft.atitle=Partial+migration+in+Australian+landbirds%3A+a+review&rft.volume=101&rft.issue=4&rft.pages=281-292&rft.date=2001-01&rft_id=info%3Adoi%2F10.1071%2FMU00034&rft.aulast=Chan&rft.aufirst=Ken&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-292"><a href="#cite_ref-292">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHummelBeukenberg1989" class="citation magazine cs1">Hummel, D.; Beukenberg, M. (1989). "Aerodynamische Interferenzeffekte beim Formationsfl ug von Vogeln". J. Ornithol. Vol. 130. pp. 15–24. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2FBF01647158">10.1007/BF01647158</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=J.+Ornithol.&rft.atitle=Aerodynamische+Interferenzeffekte+beim+Formationsfl+ug+von+Vogeln&rft.volume=130&rft.pages=15-24&rft.date=1989&rft_id=info%3Adoi%2F10.1007%2FBF01647158&rft.aulast=Hummel&rft.aufirst=D.&rft.au=Beukenberg%2C+M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-293"><a href="#cite_ref-293">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCuttsSpeakman1994" class="citation magazine cs1">Cutts, C. J.; Speakman, J. R. (1994). <a rel="nofollow" class="external text" href="http://jeb.biologists.org/cgi/reprint/189/1/251.pdf">"Energy savings in formation flight of Pink-footed Geese"</a> (PDF). J. Exp. Biol. Vol. 189, no. 1. pp. 251–261. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/9317742">9317742</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20081031132021/http://jeb.biologists.org/cgi/reprint/189/1/251.pdf">Archived</a> (PDF) from the original on 2008-10-31. Retrieved 2017-04-01.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=J.+Exp.+Biol.&rft.atitle=Energy+savings+in+formation+flight+of+Pink-footed+Geese&rft.volume=189&rft.issue=1&rft.pages=251-261&rft.date=1994&rft_id=info%3Apmid%2F9317742&rft.aulast=Cutts&rft.aufirst=C.+J.&rft.au=Speakman%2C+J.+R.&rft_id=http%3A%2F%2Fjeb.biologists.org%2Fcgi%2Freprint%2F189%2F1%2F251.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-294"><a href="#cite_ref-294">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLaboratory_of_Ornithology,_Cornell_University1974" class="citation magazine cs1">Laboratory of Ornithology, Cornell University (March 1974). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=RTclAQAAMAAJ">"Scheduled Birding Trips Around the State Join Newell"</a>. Scissortail. Vol. 24. p. 32. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0582-2637">0582-2637</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Scissortail&rft.atitle=Scheduled+Birding+Trips+Around+the+State+Join+Newell&rft.volume=24&rft.pages=32&rft.date=1974-03&rft.issn=0582-2637&rft.au=Laboratory+of+Ornithology%2C+Cornell+University&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DRTclAQAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-BeedyPandolfino2013-295"><a href="#cite_ref-BeedyPandolfino2013_295-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBeedyPandolfino2013" class="citation book cs1">Beedy, Ted; Pandolfino, Ed (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=lALkK5pRuFUC&pg=PA47">Birds of the Sierra Nevada: Their Natural History, Status, and Distribution</a>. University of California Press. p. 47. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-520-95447-2" title="Special:BookSources/978-0-520-95447-2"><bdi>978-0-520-95447-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds+of+the+Sierra+Nevada%3A+Their+Natural+History%2C+Status%2C+and+Distribution&rft.pages=47&rft.pub=University+of+California+Press&rft.date=2013&rft.isbn=978-0-520-95447-2&rft.aulast=Beedy&rft.aufirst=Ted&rft.au=Pandolfino%2C+Ed&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DlALkK5pRuFUC%26pg%3DPA47&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Terres616-617-296"><a href="#cite_ref-Terres616-617_296-0">^</a> <a href="#CITEREFTerres1980">Terres 1980</a>, pp. 616–617 </li> <li id="cite_note-297"><a href="#cite_ref-297">^</a> <a href="#CITEREFFloyd2008">Floyd 2008</a>, p. 497 </li> <li id="cite_note-298"><a href="#cite_ref-298">^</a> <a href="#CITEREFKingMcLelland1985">King & McLelland 1985</a>, p. 376 </li> <li id="cite_note-Elliot-299"><a href="#cite_ref-Elliot_299-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFElliot1898" class="citation book cs1">Elliot, Daniel Giraud (1898). <a rel="nofollow" class="external text" href="https://archive.org/details/wildfowluniteds00elligoog">The Wild Fowl of the United States and British Possessions</a>. New York, NY: F. P. Harper. p. xviii. <a href="/wiki/LCCN_(identifier)" class="mw-redirect" title="LCCN (identifier)">LCCN</a> <a rel="nofollow" class="external text" href="https://lccn.loc.gov/98001121">98001121</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Wild+Fowl+of+the+United+States+and+British+Possessions&rft.place=New+York%2C+NY&rft.pages=xviii&rft.pub=F.+P.+Harper&rft.date=1898&rft_id=info%3Alccn%2F98001121&rft.aulast=Elliot&rft.aufirst=Daniel+Giraud&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fwildfowluniteds00elligoog&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-300"><a href="#cite_ref-300">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPerrins1974" class="citation book cs1">Perrins, Christopher M. (1974). Birds. London, UK: Collins. p. 24. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-00-212173-6" title="Special:BookSources/978-0-00-212173-6"><bdi>978-0-00-212173-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds&rft.place=London%2C+UK&rft.pages=24&rft.pub=Collins&rft.date=1974&rft.isbn=978-0-00-212173-6&rft.aulast=Perrins&rft.aufirst=Christopher+M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-301"><a href="#cite_ref-301">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPetrie2006" class="citation book cs1">Petrie, Chuck (2006). Why Ducks Do That: 40 Distinctive Duck Behaviors Explained and Photographed. Minocqua, WI: Willow Creek Press. p. 31. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-59543-050-2" title="Special:BookSources/978-1-59543-050-2"><bdi>978-1-59543-050-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Why+Ducks+Do+That%3A+40+Distinctive+Duck+Behaviors+Explained+and+Photographed&rft.place=Minocqua%2C+WI&rft.pages=31&rft.pub=Willow+Creek+Press&rft.date=2006&rft.isbn=978-1-59543-050-2&rft.aulast=Petrie&rft.aufirst=Chuck&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-302"><a href="#cite_ref-302">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGoodmanFisher1962" class="citation book cs1">Goodman, Donald Charles; Fisher, Harvey I. (1962). Functional Anatomy of the Feeding Apparatus in Waterfowl (Aves:Anatidae). Carbondale, IL: Southern Illinois University Press. p. 179. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/646859135">646859135</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Functional+Anatomy+of+the+Feeding+Apparatus+in+Waterfowl+%28Aves%3AAnatidae%29&rft.place=Carbondale%2C+IL&rft.pages=179&rft.pub=Southern+Illinois+University+Press&rft.date=1962&rft_id=info%3Aoclcnum%2F646859135&rft.aulast=Goodman&rft.aufirst=Donald+Charles&rft.au=Fisher%2C+Harvey+I.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-303"><a href="#cite_ref-303">^</a> <a href="#CITEREFKingMcLelland1985">King & McLelland 1985</a>, p. 421 </li> <li id="cite_note-304"><a href="#cite_ref-304">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 470 </li> <li id="cite_note-Gill108-305">^ <a href="#cite_ref-Gill108_305-0">a</a> <a href="#cite_ref-Gill108_305-1">b</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 108 </li> <li id="cite_note-Hosker1936-306"><a href="#cite_ref-Hosker1936_306-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHosker1936" class="citation magazine cs1">Hosker, Anne (1936). "Studies on the epidermal structures of birds". Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. Vol. 226, no. 533. pp. 143–188. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1936RSPTB.226..143H">1936RSPTB.226..143H</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1098%2Frstb.1936.0006">10.1098/rstb.1936.0006</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0080-4622">0080-4622</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/92253">92253</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Philosophical+Transactions+of+the+Royal+Society+of+London.+Series+B%2C+Biological+Sciences&rft.atitle=Studies+on+the+epidermal+structures+of+birds&rft.volume=226&rft.issue=533&rft.pages=143-188&rft.date=1936&rft_id=info%3Adoi%2F10.1098%2Frstb.1936.0006&rft.issn=0080-4622&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F92253%23id-name%3DJSTOR&rft_id=info%3Abibcode%2F1936RSPTB.226..143H&rft.aulast=Hosker&rft.aufirst=Anne&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-307"><a href="#cite_ref-307">^</a> <a href="#CITEREFBird2004">Bird 2004</a>, p. 281 </li> <li id="cite_note-308"><a href="#cite_ref-308">^</a> <a href="#CITEREFBird2004">Bird 2004</a>, p. 277 </li> <li id="cite_note-Campbell386-309"><a href="#cite_ref-Campbell386_309-0">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 386 </li> <li id="cite_note-310"><a href="#cite_ref-310">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 345 </li> <li id="cite_note-skutch-311"><a href="#cite_ref-skutch_311-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSkutch1960" class="citation magazine cs1">Skutch, Alexander F (1960). "The nest as a dormitory". Ibis. Vol. 103, no. 1. pp. 50–70. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1474-919X.1961.tb02420.x">10.1111/j.1474-919X.1961.tb02420.x</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Ibis&rft.atitle=The+nest+as+a+dormitory&rft.volume=103&rft.issue=1&rft.pages=50-70&rft.date=1960&rft_id=info%3Adoi%2F10.1111%2Fj.1474-919X.1961.tb02420.x&rft.aulast=Skutch&rft.aufirst=Alexander+F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-312"><a href="#cite_ref-312">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGibbon2015" class="citation web cs1">Gibbon, Johnny (April 20, 2015). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170103173244/http://insider.si.edu/2015/04/bird-nests-variety-is-key-for-avian-architects/">"Bird Nests: Variety Is Key For The World's Avian Architects"</a>. Smithsonian. Archived from <a rel="nofollow" class="external text" href="http://smithsonianscience.org/2015/04/bird-nests-variety-is-key-for-avian-architects">the original</a> on January 3, 2017. Retrieved February 7, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Bird+Nests%3A+Variety+Is+Key+For+The+World%27s+Avian+Architects&rft.pub=Smithsonian&rft.date=2015-04-20&rft.aulast=Gibbon&rft.aufirst=Johnny&rft_id=http%3A%2F%2Fsmithsonianscience.org%2F2015%2F04%2Fbird-nests-variety-is-key-for-avian-architects&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-313"><a href="#cite_ref-313">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 387 </li> <li id="cite_note-314"><a href="#cite_ref-314">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWilliamsFlach2003" class="citation magazine cs1">Williams, David L.; Flach, E (March 2003). "Symblepharon with aberrant protrusion of the nictitating membrane in the snowy owl (Nyctea scandiaca)". Veterinary Ophthalmology. Vol. 6, no. 1. pp. 11–13. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1046%2Fj.1463-5224.2003.00250.x">10.1046/j.1463-5224.2003.00250.x</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/12641836">12641836</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Veterinary+Ophthalmology&rft.atitle=Symblepharon+with+aberrant+protrusion+of+the+nictitating+membrane+in+the+snowy+owl+%28Nyctea+scandiaca%29&rft.volume=6&rft.issue=1&rft.pages=11-13&rft.date=2003-03&rft_id=info%3Adoi%2F10.1046%2Fj.1463-5224.2003.00250.x&rft_id=info%3Apmid%2F12641836&rft.aulast=Williams&rft.aufirst=David+L.&rft.au=Flach%2C+E&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Gill185-315"><a href="#cite_ref-Gill185_315-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 185 </li> <li id="cite_note-Pettingill11-316"><a href="#cite_ref-Pettingill11_316-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 11 </li> <li id="cite_note-Hauber2014-317"><a href="#cite_ref-Hauber2014_317-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHauber2014" class="citation book cs1">Hauber, Mark E. (1 August 2014). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=evQvBAAAQBAJ">The Book of Eggs: A Life-Size Guide to the Eggs of Six Hundred of the World's Bird Species</a>. Chicago: University of Chicago Press. p. 31. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-226-05781-1" title="Special:BookSources/978-0-226-05781-1"><bdi>978-0-226-05781-1</bdi></a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20240224051302/https://books.google.com/books?id=evQvBAAAQBAJ">Archived</a> from the original on 24 February 2024. Retrieved 14 June 2018.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Book+of+Eggs%3A+A+Life-Size+Guide+to+the+Eggs+of+Six+Hundred+of+the+World%27s+Bird+Species&rft.place=Chicago&rft.pages=31&rft.pub=University+of+Chicago+Press&rft.date=2014-08-01&rft.isbn=978-0-226-05781-1&rft.aulast=Hauber&rft.aufirst=Mark+E.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DevQvBAAAQBAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Gill117-318">^ <a href="#cite_ref-Gill117_318-0">a</a> <a href="#cite_ref-Gill117_318-1">b</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 117 </li> <li id="cite_note-319"><a href="#cite_ref-319">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWhitneySmith1911" class="citation book cs1">Whitney, William Dwight; Smith, Benjamin Eli (1911). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=dhTpAAAAMAAJ&pg=PA4123">The Century Dictionary and Cyclopedia, Vol. 6</a>. New York: The Century Company. p. 4123. <a href="/wiki/LCCN_(identifier)" class="mw-redirect" title="LCCN (identifier)">LCCN</a> <a rel="nofollow" class="external text" href="https://lccn.loc.gov/11031934">11031934</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Century+Dictionary+and+Cyclopedia%2C+Vol.+6&rft.place=New+York&rft.pages=4123&rft.pub=The+Century+Company&rft.date=1911&rft_id=info%3Alccn%2F11031934&rft.aulast=Whitney&rft.aufirst=William+Dwight&rft.au=Smith%2C+Benjamin+Eli&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DdhTpAAAAMAAJ%26pg%3DPA4123&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-320"><a href="#cite_ref-320">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBock1989" class="citation magazine cs1">Bock, Walter J. (1989). "Organisms as Functional Machines: A Connectivity Explanation". American Zoologist. Vol. 29, no. 3. pp. 1119–1132. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Ficb%2F29.3.1119">10.1093/icb/29.3.1119</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/3883510">3883510</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=American+Zoologist&rft.atitle=Organisms+as+Functional+Machines%3A+A+Connectivity+Explanation&rft.volume=29&rft.issue=3&rft.pages=1119-1132&rft.date=1989&rft_id=info%3Adoi%2F10.1093%2Ficb%2F29.3.1119&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F3883510%23id-name%3DJSTOR&rft.aulast=Bock&rft.aufirst=Walter+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Weaver83-321"><a href="#cite_ref-Weaver83_321-0">^</a> <a href="#CITEREFWeaver1981">Weaver 1981</a>, p. 83 </li> <li id="cite_note-Ernst1946-322"><a href="#cite_ref-Ernst1946_322-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMayr1946" class="citation magazine cs1">Mayr, Ernst (1946). <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/auk/v063n01/p0064-p0069.pdf">"The Number of Species of Birds"</a> (PDF). The Auk. Vol. 63, no. 1. pp. 64–69. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F4079907">10.2307/4079907</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/4079907">4079907</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160304063910/http://sora.unm.edu/sites/default/files/journals/auk/v063n01/p0064-p0069.pdf">Archived</a> (PDF) from the original on 2016-03-04. Retrieved 2017-01-21.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Auk&rft.atitle=The+Number+of+Species+of+Birds&rft.volume=63&rft.issue=1&rft.pages=64-69&rft.date=1946&rft_id=info%3Adoi%2F10.2307%2F4079907&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F4079907%23id-name%3DJSTOR&rft.aulast=Mayr&rft.aufirst=Ernst&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fauk%2Fv063n01%2Fp0064-p0069.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Kennedy2014-323"><a href="#cite_ref-Kennedy2014_323-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKennedy2014" class="citation book cs1">Kennedy, Adam Scott (2014). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=gmmYDwAAQBAJ&pg=PA198">Birds of the Serengeti and Ngorongoro Conservation Area</a>. Princeton University Press. p. 198. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-691-15910-2" title="Special:BookSources/978-0-691-15910-2"><bdi>978-0-691-15910-2</bdi></a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230528143743/https://books.google.com/books?id=gmmYDwAAQBAJ&pg=PA198">Archived</a> from the original on 2023-05-28. Retrieved 2023-03-19.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds+of+the+Serengeti+and+Ngorongoro+Conservation+Area&rft.pages=198&rft.pub=Princeton+University+Press&rft.date=2014&rft.isbn=978-0-691-15910-2&rft.aulast=Kennedy&rft.aufirst=Adam+Scott&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DgmmYDwAAQBAJ%26pg%3DPA198&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-324"><a href="#cite_ref-324">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, p. 77 </li> <li id="cite_note-BarnOwlLice-325"><a href="#cite_ref-BarnOwlLice_325-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBushVillaBovesBrewer2012" class="citation magazine cs1">Bush, Sarah E.; Villa, Scott M.; Boves, Than J.; Brewer, Dallas; Belthoff, James R. (April 1, 2012). <a rel="nofollow" class="external text" href="https://doi.org/10.1645/GE-2888.1">"Influence of bill and foot morphology on the ectoparasites of barn owls"</a>. Journal of Parasitology. Vol. 98, no. 2. pp. 256–261. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1645%2FGE-2888.1">10.1645/GE-2888.1</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/22010835">22010835</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Parasitology&rft.atitle=Influence+of+bill+and+foot+morphology+on+the+ectoparasites+of+barn+owls&rft.volume=98&rft.issue=2&rft.pages=256-261&rft.date=2012-04-01&rft_id=info%3Adoi%2F10.1645%2FGE-2888.1&rft_id=info%3Apmid%2F22010835&rft.aulast=Bush&rft.aufirst=Sarah+E.&rft.au=Villa%2C+Scott+M.&rft.au=Boves%2C+Than+J.&rft.au=Brewer%2C+Dallas&rft.au=Belthoff%2C+James+R.&rft_id=https%3A%2F%2Fdoi.org%2F10.1645%2FGE-2888.1&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-FOOTNOTEChekeMannAllen200115-326">^ <a href="#cite_ref-FOOTNOTEChekeMannAllen200115_326-0">a</a> <a href="#cite_ref-FOOTNOTEChekeMannAllen200115_326-1">b</a> <a href="#CITEREFChekeMannAllen2001">Cheke, Mann & Allen 2001</a>, p. 15. </li> <li id="cite_note-FOOTNOTEChekeMannAllen200123-327"><a href="#cite_ref-FOOTNOTEChekeMannAllen200123_327-0">^</a> <a href="#CITEREFChekeMannAllen2001">Cheke, Mann & Allen 2001</a>, p. 23. </li> <li id="cite_note-328"><a href="#cite_ref-328">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEvansHatchwell1992" class="citation journal cs1">Evans, Matthew R. & Hatchwell, B.J. (1992). <a rel="nofollow" class="external text" href="https://www.researchgate.net/publication/227254273">"An experimental study of male adornment in the scarlet-tufted malachite sunbird: I. The role of pectoral tufts in territorial defence"</a>. Behavioral Ecology and Sociobiology. 29 (6): 413–419. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1992BEcoS..29..413E">1992BEcoS..29..413E</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2FBF00170171">10.1007/BF00170171</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/4600642">4600642</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Behavioral+Ecology+and+Sociobiology&rft.atitle=An+experimental+study+of+male+adornment+in+the+scarlet-tufted+malachite+sunbird%3A+I.+The+role+of+pectoral+tufts+in+territorial+defence&rft.volume=29&rft.issue=6&rft.pages=413-419&rft.date=1992&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F4600642%23id-name%3DJSTOR&rft_id=info%3Adoi%2F10.1007%2FBF00170171&rft_id=info%3Abibcode%2F1992BEcoS..29..413E&rft.aulast=Evans&rft.aufirst=Matthew+R.&rft.au=Hatchwell%2C+B.J.&rft_id=https%3A%2F%2Fwww.researchgate.net%2Fpublication%2F227254273&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-329"><a href="#cite_ref-329">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20170317235550/http://www.geol.umd.edu/~tholtz/G204/lectures/204birds.html">"GEOL 204 The Fossil Record: Feathered Dragons: The Origins of Birds and of Avian Flight"</a>. Department of Geology at the University of Maryland. Archived from <a rel="nofollow" class="external text" href="http://www.geol.umd.edu/~tholtz/G204/lectures/204birds.html">the original</a> on March 17, 2017. Retrieved January 29, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=GEOL+204+The+Fossil+Record%3A+Feathered+Dragons%3A+The+Origins+of+Birds+and+of+Avian+Flight&rft.pub=Department+of+Geology+at+the+University+of+Maryland&rft_id=http%3A%2F%2Fwww.geol.umd.edu%2F~tholtz%2FG204%2Flectures%2F204birds.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Elphick136-330"><a href="#cite_ref-Elphick136_330-0">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, p. 136 </li> <li id="cite_note-Proctor86-331"><a href="#cite_ref-Proctor86_331-0">^</a> <a href="#CITEREFProctorLynch1998">Proctor & Lynch 1998</a>, p. 86 </li> <li id="cite_note-Athan2008-332"><a href="#cite_ref-Athan2008_332-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAthan2008" class="citation book cs1">Athan, Mattie Sue (2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=wB6tG1E6O-QC&pg=PA57">Guide to the Quaker Parrot</a>. Barron's Educational Series. p. 57. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7641-3668-9" title="Special:BookSources/978-0-7641-3668-9"><bdi>978-0-7641-3668-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Guide+to+the+Quaker+Parrot&rft.pages=57&rft.pub=Barron%27s+Educational+Series&rft.date=2008&rft.isbn=978-0-7641-3668-9&rft.aulast=Athan&rft.aufirst=Mattie+Sue&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DwB6tG1E6O-QC%26pg%3DPA57&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill141-42-333"><a href="#cite_ref-Pettingill141-42_333-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, pp. 41–42 </li> <li id="cite_note-Hawkins-334">^ <a href="#cite_ref-Hawkins_334-0">a</a> <a href="#cite_ref-Hawkins_334-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFIan_J._h._DuncanPenny_Hawkins2010" class="citation book cs1">Ian J. h. Duncan; Penny Hawkins (2010). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=mhnYLcXA6MYC&pg=PA84">The Welfare of Domestic Fowl and Other Captive Birds</a>. Springer. pp. 84–85. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-90-481-3649-0" title="Special:BookSources/978-90-481-3649-0"><bdi>978-90-481-3649-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Welfare+of+Domestic+Fowl+and+Other+Captive+Birds&rft.pages=84-85&rft.pub=Springer&rft.date=2010&rft.isbn=978-90-481-3649-0&rft.au=Ian+J.+h.+Duncan&rft.au=Penny+Hawkins&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DmhnYLcXA6MYC%26pg%3DPA84&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-335"><a href="#cite_ref-335">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHudson1910" class="citation book cs1">Hudson, W.H. (1910). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=zvxGAQAAMAAJ">Harmsworth Natural History: A Complete Survey of the Animal Kingdom</a>. London: Carmelite House. p. 926.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Harmsworth+Natural+History%3A+A+Complete+Survey+of+the+Animal+Kingdom&rft.place=London&rft.pages=926&rft.pub=Carmelite+House&rft.date=1910&rft.aulast=Hudson&rft.aufirst=W.H.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DzvxGAQAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-336"><a href="#cite_ref-336">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFReference-OED-Plumage" class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://www.oed.com/search/dictionary/?q=Plumage">"Plumage"</a>. <a href="/wiki/Oxford_English_Dictionary" title="Oxford English Dictionary">Oxford English Dictionary</a> (Online ed.). <a href="/wiki/Oxford_University_Press" title="Oxford University Press">Oxford University Press</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Plumage&rft.btitle=Oxford+English+Dictionary&rft.edition=Online&rft.pub=Oxford+University+Press&rft_id=https%3A%2F%2Fwww.oed.com%2Fsearch%2Fdictionary%2F%3Fq%3DPlumage&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> (Subscription or <a rel="nofollow" class="external text" href="https://www.oed.com/public/login/loggingin#withyourlibrary">participating institution membership</a> required.) </li> <li id="cite_note-Pettingill194-337"><a href="#cite_ref-Pettingill194_337-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 194 </li> <li id="cite_note-GalaPlum-338"><a href="#cite_ref-GalaPlum_338-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRosenbergGeistHarpp" class="citation web cs1">Rosenberg, Daniel K.; Geist, Dennis; Harpp, Karen. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160317093057/http://www.darwinfoundation.org/datazone/media/pdf/59/NG_59_1998_Harpp%26Geist_Galapagos_plumology.pdf">"Galapagos plumology"</a> (PDF). darwinfoundation.org. Charles Darwin Collections Database by the Charles Darwin Foundation. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1390-2830">1390-2830</a>. Archived from <a rel="nofollow" class="external text" href="http://www.darwinfoundation.org/datazone/galapagos-research/article/galapagos-plumology/">the original</a> on March 17, 2016. Retrieved January 29, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=darwinfoundation.org&rft.atitle=Galapagos+plumology&rft.issn=1390-2830&rft.aulast=Rosenberg&rft.aufirst=Daniel+K.&rft.au=Geist%2C+Dennis&rft.au=Harpp%2C+Karen&rft_id=http%3A%2F%2Fwww.darwinfoundation.org%2Fdatazone%2Fgalapagos-research%2Farticle%2Fgalapagos-plumology%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-LangsFWPlumology-339"><a href="#cite_ref-LangsFWPlumology_339-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEichhorn2005" class="citation book cs1">Eichhorn, hrsg. von Manfred (2005). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=KRJfNmHhIpUC&pg=PA537">Langenscheidt Fachwörterbuch Biologie Englisch: englisch – deutsch, deutsch – englisch</a> (1. Aufl. ed.). Berlin [u.a.]: Langenscheidt. p. 537. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-3-86117-228-4" title="Special:BookSources/978-3-86117-228-4"><bdi>978-3-86117-228-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Langenscheidt+Fachw%C3%B6rterbuch+Biologie+Englisch%3A+englisch+%E2%80%93+deutsch%2C+deutsch+%E2%80%93+englisch&rft.place=Berlin+%5Bu.a.%5D&rft.pages=537&rft.edition=1.+Aufl.&rft.pub=Langenscheidt&rft.date=2005&rft.isbn=978-3-86117-228-4&rft.aulast=Eichhorn&rft.aufirst=hrsg.+von+Manfred&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DKRJfNmHhIpUC%26pg%3DPA537&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988">[<a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot">permanent dead link</a>‍] </li> <li id="cite_note-340"><a href="#cite_ref-340">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, p. 33 </li> <li id="cite_note-341"><a href="#cite_ref-341">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPodulkaRohrbaughBonney2003" class="citation book cs1">Podulka, Sandy; Rohrbaugh, Ronald W.; Bonney, Rick, eds. (2003). Home Study Course in Bird Biology, second edition. Cornell Laboratory of Ornithology. p. 55 (Glossary).</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Home+Study+Course+in+Bird+Biology%2C+second+edition&rft.pages=55+%28Glossary%29&rft.pub=Cornell+Laboratory+of+Ornithology&rft.date=2003&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Campbell208-342"><a href="#cite_ref-Campbell208_342-0">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 208 </li> <li id="cite_note-343"><a href="#cite_ref-343">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJuniperParr2003" class="citation book cs1">Juniper, Tony; Parr, Mike (2003). Parrots: A Guide to the Parrots of the World. London: Christopher Helm. p. 17. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7136-6933-6" title="Special:BookSources/978-0-7136-6933-6"><bdi>978-0-7136-6933-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Parrots%3A+A+Guide+to+the+Parrots+of+the+World&rft.place=London&rft.pages=17&rft.pub=Christopher+Helm&rft.date=2003&rft.isbn=978-0-7136-6933-6&rft.aulast=Juniper&rft.aufirst=Tony&rft.au=Parr%2C+Mike&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-344"><a href="#cite_ref-344">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKalstone2006" class="citation book cs1">Kalstone, Shirlee (2006). <a rel="nofollow" class="external text" href="https://archive.org/details/isbn_9780553383676/page/34">Allergic to Pets?: The Breakthrough Guide to Living with the Animals You Love</a>. New York, NY: Bantam Dell. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/isbn_9780553383676/page/34">34–35</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-553-38367-6" title="Special:BookSources/978-0-553-38367-6"><bdi>978-0-553-38367-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Allergic+to+Pets%3F%3A+The+Breakthrough+Guide+to+Living+with+the+Animals+You+Love&rft.place=New+York%2C+NY&rft.pages=34-35&rft.pub=Bantam+Dell&rft.date=2006&rft.isbn=978-0-553-38367-6&rft.aulast=Kalstone&rft.aufirst=Shirlee&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fisbn_9780553383676%2Fpage%2F34&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Lovette126-345">^ <a href="#cite_ref-Lovette126_345-0">a</a> <a href="#cite_ref-Lovette126_345-1">b</a> <a href="#CITEREFLovetteFitzpatrick2016">Lovette & Fitzpatrick 2016</a>, p. 126 </li> <li id="cite_note-HowellLewington2014-346"><a href="#cite_ref-HowellLewington2014_346-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHowellLewingtonRussell2014" class="citation book cs1">Howell, Steve N. G.; Lewington, Ian; Russell, Will (February 16, 2014). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=-YqGAAAAQBAJ&pg=PA34">Rare Birds of North America</a>. Princeton University Press. p. 34. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4008-4807-2" title="Special:BookSources/978-1-4008-4807-2"><bdi>978-1-4008-4807-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Rare+Birds+of+North+America&rft.pages=34&rft.pub=Princeton+University+Press&rft.date=2014-02-16&rft.isbn=978-1-4008-4807-2&rft.aulast=Howell&rft.aufirst=Steve+N.+G.&rft.au=Lewington%2C+Ian&rft.au=Russell%2C+Will&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D-YqGAAAAQBAJ%26pg%3DPA34&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Khanna2005-347"><a href="#cite_ref-Khanna2005_347-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKhanna2005" class="citation book cs1">Khanna, D.R. (2005). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=fDblIChi7KwC&pg=PA109">Biology of Birds</a>. Discovery Publishing House. p. 109. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-81-7141-933-3" title="Special:BookSources/978-81-7141-933-3"><bdi>978-81-7141-933-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Biology+of+Birds&rft.pages=109&rft.pub=Discovery+Publishing+House&rft.date=2005&rft.isbn=978-81-7141-933-3&rft.aulast=Khanna&rft.aufirst=D.R.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DfDblIChi7KwC%26pg%3DPA109&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-348"><a href="#cite_ref-348">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWalther2005" class="citation magazine cs1">Walther, Bruno A. (2005). "Elaborate ornaments are costly to maintain: evidence for high maintenance handicaps". Behavioral Ecology. Vol. 16, no. 1. pp. 89–95. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fbeheco%2Farh135">10.1093/beheco/arh135</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Behavioral+Ecology&rft.atitle=Elaborate+ornaments+are+costly+to+maintain%3A+evidence+for+high+maintenance+handicaps&rft.volume=16&rft.issue=1&rft.pages=89-95&rft.date=2005&rft_id=info%3Adoi%2F10.1093%2Fbeheco%2Farh135&rft.aulast=Walther&rft.aufirst=Bruno+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-349"><a href="#cite_ref-349">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShawkeyPillaiHill2003" class="citation magazine cs1">Shawkey, Matthew D.; Pillai, Shreekumar R.; Hill, Geoffrey E. (2003). "Chemical warfare? Effects of uropygial oil on feather-degrading bacteria". <a href="/wiki/Journal_of_Avian_Biology" title="Journal of Avian Biology">Journal of Avian Biology</a>. Vol. 34, no. 4. pp. 345–49. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.0908-8857.2003.03193.x">10.1111/j.0908-8857.2003.03193.x</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Avian+Biology&rft.atitle=Chemical+warfare%3F+Effects+of+uropygial+oil+on+feather-degrading+bacteria&rft.volume=34&rft.issue=4&rft.pages=345-49&rft.date=2003&rft_id=info%3Adoi%2F10.1111%2Fj.0908-8857.2003.03193.x&rft.aulast=Shawkey&rft.aufirst=Matthew+D.&rft.au=Pillai%2C+Shreekumar+R.&rft.au=Hill%2C+Geoffrey+E.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-350"><a href="#cite_ref-350">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEhrlich1986" class="citation magazine cs1">Ehrlich, Paul R. (1986). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160305202116/http://sora.unm.edu/sites/default/files/journals/auk/v103n04/p0835-p0835.pdf">"The Adaptive Significance of Anting"</a> (PDF). The Auk. Vol. 103, no. 4. p. 835. Archived from <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/auk/v103n04/p0835-p0835.pdf">the original</a> (PDF) on March 5, 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Auk&rft.atitle=The+Adaptive+Significance+of+Anting&rft.volume=103&rft.issue=4&rft.pages=835&rft.date=1986&rft.aulast=Ehrlich&rft.aufirst=Paul+R.&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fauk%2Fv103n04%2Fp0835-p0835.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-351"><a href="#cite_ref-351">^</a> <a href="#CITEREFEhrlichDobkinWheyePimm1994">Ehrlich et al. 1994</a>, p. 219 </li> <li id="cite_note-352"><a href="#cite_ref-352">^</a> <a href="#CITEREFEhrlichDobkinWheyePimm1994">Ehrlich et al. 1994</a>, p. 79 </li> <li id="cite_note-353"><a href="#cite_ref-353">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMullerPatone1998" class="citation magazine cs1">Muller, Werner; Patone, Giannino (1998). <a rel="nofollow" class="external text" href="http://jeb.biologists.org/cgi/reprint/201/18/2591.pdf">"Air transmissivity of feathers"</a> (PDF). Journal of Experimental Biology. Vol. 201, no. 18. pp. 2591–2599. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/9716511">9716511</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Experimental+Biology&rft.atitle=Air+transmissivity+of+feathers&rft.volume=201&rft.issue=18&rft.pages=2591-2599&rft.date=1998&rft_id=info%3Apmid%2F9716511&rft.aulast=Muller&rft.aufirst=Werner&rft.au=Patone%2C+Giannino&rft_id=http%3A%2F%2Fjeb.biologists.org%2Fcgi%2Freprint%2F201%2F18%2F2591.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Jenni7-354">^ <a href="#cite_ref-Jenni7_354-0">a</a> <a href="#cite_ref-Jenni7_354-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJenniWinkler1994" class="citation book cs1">Jenni, Lukas; Winkler, Raffael (1994). Moult and Ageing of European Passerines. London: Academic Press. p. 7. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-384150-6" title="Special:BookSources/978-0-12-384150-6"><bdi>978-0-12-384150-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Moult+and+Ageing+of+European+Passerines&rft.place=London&rft.pages=7&rft.pub=Academic+Press&rft.date=1994&rft.isbn=978-0-12-384150-6&rft.aulast=Jenni&rft.aufirst=Lukas&rft.au=Winkler%2C+Raffael&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-HBW37-355">^ <a href="#cite_ref-HBW37_355-0">a</a> <a href="#cite_ref-HBW37_355-1">b</a> <a href="#cite_ref-HBW37_355-2">c</a> <a href="#CITEREFdel_HoyoElliottSargatal1992">del Hoyo, Elliott & Sargatal 1992</a>, p. 37 </li> <li id="cite_note-Kaufman-356">^ <a href="#cite_ref-Kaufman_356-0">a</a> <a href="#cite_ref-Kaufman_356-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKaufman1990" class="citation book cs1">Kaufman, Kenn (1990). <a rel="nofollow" class="external text" href="https://archive.org/details/fieldguidetoadva00kauf/page/186">Advanced Birding</a>. Boston: Houghton Mifflin. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/fieldguidetoadva00kauf/page/186">186</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-395-53376-5" title="Special:BookSources/978-0-395-53376-5"><bdi>978-0-395-53376-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Advanced+Birding&rft.place=Boston&rft.pages=186&rft.pub=Houghton+Mifflin&rft.date=1990&rft.isbn=978-0-395-53376-5&rft.aulast=Kaufman&rft.aufirst=Kenn&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Ffieldguidetoadva00kauf%2Fpage%2F186&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-357"><a href="#cite_ref-357">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSvenssonGrant1999" class="citation book cs1">Svensson, Lars; Grant, Peter J. (1999). Collins Bird Guide: The Most Complete Field Guide to the Birds of Britain and Europe. London: HarperCollins. p. 231. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-00-219728-1" title="Special:BookSources/978-0-00-219728-1"><bdi>978-0-00-219728-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Collins+Bird+Guide%3A+The+Most+Complete+Field+Guide+to+the+Birds+of+Britain+and+Europe&rft.place=London&rft.pages=231&rft.pub=HarperCollins&rft.date=1999&rft.isbn=978-0-00-219728-1&rft.aulast=Svensson&rft.aufirst=Lars&rft.au=Grant%2C+Peter+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-358"><a href="#cite_ref-358">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChristie1993" class="citation book cs1">Christie, Thomas Alerstam; translated by David A. (1993). Bird migration. Cambridge [England]: <a href="/wiki/Cambridge_University_Press" title="Cambridge University Press">Cambridge University Press</a>. p. 253. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-521-44822-2" title="Special:BookSources/978-0-521-44822-2"><bdi>978-0-521-44822-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Bird+migration&rft.place=Cambridge+%5BEngland%5D&rft.pages=253&rft.pub=Cambridge+University+Press&rft.date=1993&rft.isbn=978-0-521-44822-2&rft.aulast=Christie&rft.aufirst=Thomas+Alerstam%3B+translated+by+David+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"><code class="cs1-code">{{<a href="/wiki/Template:Cite_book" title="Template:Cite book">cite book</a>}}</code>: CS1 maint: multiple names: authors list (<a href="/wiki/Category:CS1_maint:_multiple_names:_authors_list" title="Category:CS1 maint: multiple names: authors list">link</a>) </li> <li id="cite_note-Elphick49-359"><a href="#cite_ref-Elphick49_359-0">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, p. 49 </li> <li id="cite_note-360"><a href="#cite_ref-360">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHallSusanna2005" class="citation magazine cs1">Hall, K.; Susanna, S. (2005). "Do nine-primaried passerines have nine or ten primary feathers? The evolution of a concept". Journal of Ornithology. Vol. 146, no. 2. pp. 121–126. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fs10336-004-0070-5">10.1007/s10336-004-0070-5</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:36055848">36055848</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Ornithology&rft.atitle=Do+nine-primaried+passerines+have+nine+or+ten+primary+feathers%3F+The+evolution+of+a+concept&rft.volume=146&rft.issue=2&rft.pages=121-126&rft.date=2005&rft_id=info%3Adoi%2F10.1007%2Fs10336-004-0070-5&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A36055848%23id-name%3DS2CID&rft.aulast=Hall&rft.aufirst=K.&rft.au=Susanna%2C+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-361"><a href="#cite_ref-361">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPycraft1895" class="citation magazine cs1">Pycraft, W. P. (1895). "On the pterylography of the hoatzin (Opisthocomus cristatus)". Ibis. Vol. 37, no. 3. pp. 345–373. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1474-919X.1895.tb06744.x">10.1111/j.1474-919X.1895.tb06744.x</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Ibis&rft.atitle=On+the+pterylography+of+the+hoatzin+%28Opisthocomus+cristatus%29&rft.volume=37&rft.issue=3&rft.pages=345-373&rft.date=1895&rft_id=info%3Adoi%2F10.1111%2Fj.1474-919X.1895.tb06744.x&rft.aulast=Pycraft&rft.aufirst=W.+P.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-362"><a href="#cite_ref-362">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBairdBrewerRidgway1874" class="citation book cs1">Baird, Spencer Fullerton; Brewer, Thomas Mayo; Ridgway, Robert (1874). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=PF8MAQAAIAAJ&pg=PA554">A History of North American Birds</a>. Little, Brown. p. 554.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+History+of+North+American+Birds&rft.pages=554&rft.pub=Little%2C+Brown&rft.date=1874&rft.aulast=Baird&rft.aufirst=Spencer+Fullerton&rft.au=Brewer%2C+Thomas+Mayo&rft.au=Ridgway%2C+Robert&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DPF8MAQAAIAAJ%26pg%3DPA554&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Chatterjee2015-363"><a href="#cite_ref-Chatterjee2015_363-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChatterjee2015" class="citation book cs1">Chatterjee, Sankar (2015). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=V-okBwAAQBAJ&pg=PA114">The Rise of Birds: 225 Million Years of Evolution</a>. JHU Press. pp. 114–115. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4214-1614-4" title="Special:BookSources/978-1-4214-1614-4"><bdi>978-1-4214-1614-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Rise+of+Birds%3A+225+Million+Years+of+Evolution&rft.pages=114-115&rft.pub=JHU+Press&rft.date=2015&rft.isbn=978-1-4214-1614-4&rft.aulast=Chatterjee&rft.aufirst=Sankar&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DV-okBwAAQBAJ%26pg%3DPA114&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Lovette177-364"><a href="#cite_ref-Lovette177_364-0">^</a> <a href="#CITEREFLovetteFitzpatrick2016">Lovette & Fitzpatrick 2016</a>, p. 177 </li> <li id="cite_note-365"><a href="#cite_ref-365">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.merriam-webster.com/dictionary/pullus">"Definition of Pullus"</a>. Merriam-Webster. Retrieved 30 June 2024.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Merriam-Webster&rft.atitle=Definition+of+Pullus&rft_id=https%3A%2F%2Fwww.merriam-webster.com%2Fdictionary%2Fpullus&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Elphick2016-117-366"><a href="#cite_ref-Elphick2016-117_366-0">^</a> <a href="#CITEREFElphick2016">Elphick 2016</a>, p. 117 </li> <li id="cite_note-Pettingill29–32-367">^ <a href="#cite_ref-Pettingill29–32_367-0">a</a> <a href="#cite_ref-Pettingill29–32_367-1">b</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, pp. 29–32 </li> <li id="cite_note-Gill80-368">^ <a href="#cite_ref-Gill80_368-0">a</a> <a href="#cite_ref-Gill80_368-1">b</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 80 </li> <li id="cite_note-369"><a href="#cite_ref-369">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLillie1941" class="citation magazine cs1">Lillie, Frank R. (November 1941). "On the Development of Feathers". Biological Reviews. Vol. 17, no. 3. p. 247. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1469-185X.1942.tb00439.x">10.1111/j.1469-185X.1942.tb00439.x</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:84592534">84592534</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Biological+Reviews&rft.atitle=On+the+Development+of+Feathers&rft.volume=17&rft.issue=3&rft.pages=247&rft.date=1941-11&rft_id=info%3Adoi%2F10.1111%2Fj.1469-185X.1942.tb00439.x&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A84592534%23id-name%3DS2CID&rft.aulast=Lillie&rft.aufirst=Frank+R.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-370"><a href="#cite_ref-370">^</a> <a href="#CITEREFdel_HoyoElliottSargatal1992">del Hoyo, Elliott & Sargatal 1992</a>, pp. 84–85, 91, 104 </li> <li id="cite_note-371"><a href="#cite_ref-371">^</a> <a href="#CITEREFdel_HoyoElliottSargatal1992">del Hoyo, Elliott & Sargatal 1992</a>, p. 141 </li> <li id="cite_note-372"><a href="#cite_ref-372">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMadgeMcGowan2002" class="citation book cs1">Madge, Steve; McGowan, Phil (2002). Pheasants, Partridges & Grouse. London: Christopher Helm. p. 375. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7136-3966-7" title="Special:BookSources/978-0-7136-3966-7"><bdi>978-0-7136-3966-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Pheasants%2C+Partridges+%26+Grouse&rft.place=London&rft.pages=375&rft.pub=Christopher+Helm&rft.date=2002&rft.isbn=978-0-7136-3966-7&rft.aulast=Madge&rft.aufirst=Steve&rft.au=McGowan%2C+Phil&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-373"><a href="#cite_ref-373">^</a> <a href="#CITEREFdel_HoyoElliottSargatal1992">del Hoyo, Elliott & Sargatal 1992</a>, p. 105 </li> <li id="cite_note-374"><a href="#cite_ref-374">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPodulkaRohrbaughBonney2003" class="citation book cs1">Podulka, Sandy; Rohrbaugh, Ronald W.; Bonney, Rick, eds. (2003). Home Study Course in Bird Biology, Second Edition. Ithaca, New York: Cornell Lab of Ornithology. p. 1.11.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Home+Study+Course+in+Bird+Biology%2C+Second+Edition&rft.place=Ithaca%2C+New+York&rft.pages=1.11&rft.pub=Cornell+Lab+of+Ornithology&rft.date=2003&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Trail8-375"><a href="#cite_ref-Trail8_375-0">^</a> <a href="#CITEREFTrail2001">Trail 2001</a>, p. 8 </li> <li id="cite_note-376"><a href="#cite_ref-376">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMollerHoglund1991" class="citation magazine cs1">Moller, Anders Pape; Hoglund, Jacob (1991). "Patterns of Fluctuating Asymmetry in Avian Feather Ornaments: Implications for Models of Sexual Selection". Proceedings: Biological Sciences. Vol. 245, no. 1312. pp. 1–5. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1991RSPSB.245....1P">1991RSPSB.245....1P</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1098%2Frspb.1991.0080">10.1098/rspb.1991.0080</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:84991514">84991514</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Proceedings%3A+Biological+Sciences&rft.atitle=Patterns+of+Fluctuating+Asymmetry+in+Avian+Feather+Ornaments%3A+Implications+for+Models+of+Sexual+Selection&rft.volume=245&rft.issue=1312&rft.pages=1-5&rft.date=1991&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A84991514%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1098%2Frspb.1991.0080&rft_id=info%3Abibcode%2F1991RSPSB.245....1P&rft.aulast=Moller&rft.aufirst=Anders+Pape&rft.au=Hoglund%2C+Jacob&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-377"><a href="#cite_ref-377">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStresemann1963" class="citation magazine cs1"><a href="/wiki/Erwin_Stresemann" title="Erwin Stresemann">Stresemann, Erwin</a> (November–December 1963). <a rel="nofollow" class="external text" href="https://sora.unm.edu/sites/default/files/journals/condor/v065n06/p0449-p0459.pdf">"Variations in the Number of Primaries"</a> (PDF). The Condor. Vol. 65, no. 6. pp. 449–459. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F1365506">10.2307/1365506</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/1365506">1365506</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20211019024247/https://sora.unm.edu/sites/default/files/journals/condor/v065n06/p0449-p0459.pdf">Archived</a> (PDF) from the original on 2021-10-19. Retrieved 2017-02-05.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Condor&rft.atitle=Variations+in+the+Number+of+Primaries&rft.volume=65&rft.issue=6&rft.pages=449-459&rft.date=1963-11%2F1963-12&rft_id=info%3Adoi%2F10.2307%2F1365506&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F1365506%23id-name%3DJSTOR&rft.aulast=Stresemann&rft.aufirst=Erwin&rft_id=https%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fcondor%2Fv065n06%2Fp0449-p0459.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Lovette458-378"><a href="#cite_ref-Lovette458_378-0">^</a> <a href="#CITEREFLovetteFitzpatrick2016">Lovette & Fitzpatrick 2016</a>, p. 458 </li> <li id="cite_note-Terrill&Able-379"><a href="#cite_ref-Terrill&Able_379-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTerrillAbel1988" class="citation magazine cs1">Terrill, Scott B.; Abel, Kenneth P. (January 1988). <a rel="nofollow" class="external text" href="https://sora.unm.edu/sites/default/files/journals/auk/v105n01/p0205-p0206.pdf">"Bird Migration Terminology"</a> (PDF). The Auk. Vol. 105. p. 206. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fauk%2F105.1.205">10.1093/auk/105.1.205</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20211019030805/https://sora.unm.edu/sites/default/files/journals/auk/v105n01/p0205-p0206.pdf">Archived</a> (PDF) from the original on 2021-10-19. Retrieved 2017-03-19.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Auk&rft.atitle=Bird+Migration+Terminology&rft.volume=105&rft.pages=206&rft.date=1988-01&rft_id=info%3Adoi%2F10.1093%2Fauk%2F105.1.205&rft.aulast=Terrill&rft.aufirst=Scott+B.&rft.au=Abel%2C+Kenneth+P.&rft_id=https%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fauk%2Fv105n01%2Fp0205-p0206.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Lederer-380">^ <a href="#cite_ref-Lederer_380-0">a</a> <a href="#cite_ref-Lederer_380-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLederer" class="citation magazine cs1">Lederer, Roger J. <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/wilson/v084n02/p0193-p0197.pdf">"The Role of Avian Rictal Bristles"</a> (PDF). The Wilson Bulletin. Vol. 84, no. 2. pp. 193–197. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140204025111/http://sora.unm.edu/sites/default/files/journals/wilson/v084n02/p0193-p0197.pdf">Archived</a> (PDF) from the original on 2014-02-04. Retrieved 2017-01-20.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Wilson+Bulletin&rft.atitle=The+Role+of+Avian+Rictal+Bristles&rft.volume=84&rft.issue=2&rft.pages=193-197&rft.aulast=Lederer&rft.aufirst=Roger+J&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fwilson%2Fv084n02%2Fp0193-p0197.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Conover-381">^ <a href="#cite_ref-Conover_381-0">a</a> <a href="#cite_ref-Conover_381-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFConoverMiller1980" class="citation magazine cs1">Conover, Michael R.; Miller, Don E. (November 1980). <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/condor/v082n04/p0469-p0471.pdf">"Rictal Bristle Function in Willow Flycatcher"</a> (PDF). The Condor. Vol. 82, no. 4. pp. 469–471. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F1367580">10.2307/1367580</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/1367580">1367580</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170812220525/https://sora.unm.edu/sites/default/files/journals/condor/v082n04/p0469-p0471.pdf">Archived</a> (PDF) from the original on 2017-08-12. Retrieved 2017-01-20.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Condor&rft.atitle=Rictal+Bristle+Function+in+Willow+Flycatcher&rft.volume=82&rft.issue=4&rft.pages=469-471&rft.date=1980-11&rft_id=info%3Adoi%2F10.2307%2F1367580&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F1367580%23id-name%3DJSTOR&rft.aulast=Conover&rft.aufirst=Michael+R.&rft.au=Miller%2C+Don+E.&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fcondor%2Fv082n04%2Fp0469-p0471.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-382"><a href="#cite_ref-382">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLederer1972" class="citation magazine cs1">Lederer, Roger J. (1972). <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/wilson/v084n02/p0193-p0197.pdf">"The role of avian rictal bristles"</a> (PDF). The Wilson Bulletin. Vol. 84. pp. 193–97. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140204025111/http://sora.unm.edu/sites/default/files/journals/wilson/v084n02/p0193-p0197.pdf">Archived</a> (PDF) from the original on 2014-02-04. Retrieved 2017-01-20.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Wilson+Bulletin&rft.atitle=The+role+of+avian+rictal+bristles&rft.volume=84&rft.pages=193-97&rft.date=1972&rft.aulast=Lederer&rft.aufirst=Roger+J.&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fwilson%2Fv084n02%2Fp0193-p0197.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-383"><a href="#cite_ref-383">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHarris2014" class="citation magazine cs1">Harris, Mike P. (2014). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160611084736/http://www.seabirdgroup.org.uk/journals/seabird_27/seabird-27-21.pdf">"Aging Atlantic Puffins Fratercula arctica in summer and winter"</a> (PDF). Seabird. Vol. 27. pp. 22–40. Archived from <a rel="nofollow" class="external text" href="http://www.seabirdgroup.org.uk/journals/seabird_27/seabird-27-21.pdf">the original</a> (PDF) on June 11, 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Seabird&rft.atitle=Aging+Atlantic+Puffins+Fratercula+arctica+in+summer+and+winter&rft.volume=27&rft.pages=22-40&rft.date=2014&rft.aulast=Harris&rft.aufirst=Mike+P.&rft_id=http%3A%2F%2Fwww.seabirdgroup.org.uk%2Fjournals%2Fseabird_27%2Fseabird-27-21.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-384"><a href="#cite_ref-384">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20201019210122/http://www.welshwildlife.org/wp-content/uploads/2011/05/Puffin.pdf">"Skomer Island Puffin Factsheet"</a> (PDF). welshwildlife.org. Wildlife Trust of South & West Wales. May 2011. Archived from <a rel="nofollow" class="external text" href="http://www.welshwildlife.org/wp-content/uploads/2011/05/Puffin.pdf">the original</a> (PDF) on 2020-10-19. Retrieved 2017-01-20.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=welshwildlife.org&rft.atitle=Skomer+Island+Puffin+Factsheet&rft.date=2011-05&rft_id=http%3A%2F%2Fwww.welshwildlife.org%2Fwp-content%2Fuploads%2F2011%2F05%2FPuffin.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-385"><a href="#cite_ref-385">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGirling2003" class="citation book cs1">Girling, Simon (2003). Veterinary Nursing of Exotic Pets. Oxford, UK: Blackwell Publishing. p. 4. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4051-0747-1" title="Special:BookSources/978-1-4051-0747-1"><bdi>978-1-4051-0747-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Veterinary+Nursing+of+Exotic+Pets&rft.place=Oxford%2C+UK&rft.pages=4&rft.pub=Blackwell+Publishing&rft.date=2003&rft.isbn=978-1-4051-0747-1&rft.aulast=Girling&rft.aufirst=Simon&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Samour296-386"><a href="#cite_ref-Samour296_386-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSamour2000" class="citation book cs1">Samour, Jaime, ed. (2000). Avian Medicine. London, UK: Mosby. p. 296. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7234-2960-9" title="Special:BookSources/978-0-7234-2960-9"><bdi>978-0-7234-2960-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Avian+Medicine&rft.place=London%2C+UK&rft.pages=296&rft.pub=Mosby&rft.date=2000&rft.isbn=978-0-7234-2960-9&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-387"><a href="#cite_ref-387">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBonseWitter1993" class="citation magazine cs1">Bonse, R.H.; Witter, Mark S. (1993). <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/condor/v095n03/p0736-p0738.pdf">"Indentation hardness of the bill keratin of the European Starling"</a> (PDF). The Condor. Vol. 95, no. 3. pp. 736–738. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F1369622">10.2307/1369622</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/1369622">1369622</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160304210607/http://sora.unm.edu/sites/default/files/journals/condor/v095n03/p0736-p0738.pdf">Archived</a> (PDF) from the original on 2016-03-04. Retrieved 2017-01-19.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Condor&rft.atitle=Indentation+hardness+of+the+bill+keratin+of+the+European+Starling&rft.volume=95&rft.issue=3&rft.pages=736-738&rft.date=1993&rft_id=info%3Adoi%2F10.2307%2F1369622&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F1369622%23id-name%3DJSTOR&rft.aulast=Bonse&rft.aufirst=R.H.&rft.au=Witter%2C+Mark+S.&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fcondor%2Fv095n03%2Fp0736-p0738.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill8-388">^ <a href="#cite_ref-Pettingill8_388-0">a</a> <a href="#cite_ref-Pettingill8_388-1">b</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 8 </li> <li id="cite_note-Damerow2012-389"><a href="#cite_ref-Damerow2012_389-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDamerow2012" class="citation book cs1">Damerow, Gail (2012). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=YTkBu_R6jiYC&pg=PA278">The Chicken Encyclopedia: An Illustrated Reference</a>. Storey Publishing, LLC. p. 278. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-60342-561-2" title="Special:BookSources/978-1-60342-561-2"><bdi>978-1-60342-561-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Chicken+Encyclopedia%3A+An+Illustrated+Reference&rft.pages=278&rft.pub=Storey+Publishing%2C+LLC&rft.date=2012&rft.isbn=978-1-60342-561-2&rft.aulast=Damerow&rft.aufirst=Gail&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DYTkBu_R6jiYC%26pg%3DPA278&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Lucas-390"><a href="#cite_ref-Lucas_390-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLucas1972" class="citation book cs1">Lucas, Alfred M. (1972). Avian Anatomy – integument. East Lansing, Michigan: USDA Avian Anatomy Project, Michigan State University. pp. 67, 344, 394–601.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Avian+Anatomy+%E2%80%93+integument&rft.place=East+Lansing%2C+Michigan&rft.pages=67%2C+344%2C+394-601&rft.pub=USDA+Avian+Anatomy+Project%2C+Michigan+State+University&rft.date=1972&rft.aulast=Lucas&rft.aufirst=Alfred+M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Sawyer-391"><a href="#cite_ref-Sawyer_391-0">^</a> Sawyer, R.H., Knapp, L.W. 2003. Avian Skin Development and the Evolutionary Origin of Feathers. J.Exp.Zool. (Mol.Dev.Evol) 298B:57–72. </li> <li id="cite_note-Dhouailly-392">^ <a href="#cite_ref-Dhouailly_392-0">a</a> <a href="#cite_ref-Dhouailly_392-1">b</a> <a href="#cite_ref-Dhouailly_392-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDhouailly2009" class="citation magazine cs1">Dhouailly, D. (April 2009). "A New Scenario for the Evolutionary Origin of Hair, Feather, and Avian Scales". Journal of Anatomy. Vol. 214, no. 4. pp. 587–606. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1469-7580.2008.01041.x">10.1111/j.1469-7580.2008.01041.x</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2736124">2736124</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/19422430">19422430</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Anatomy&rft.atitle=A+New+Scenario+for+the+Evolutionary+Origin+of+Hair%2C+Feather%2C+and+Avian+Scales&rft.volume=214&rft.issue=4&rft.pages=587-606&rft.date=2009-04&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2736124%23id-name%3DPMC&rft_id=info%3Apmid%2F19422430&rft_id=info%3Adoi%2F10.1111%2Fj.1469-7580.2008.01041.x&rft.aulast=Dhouailly&rft.aufirst=D.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-LucasStettenheim1972-393">^ <a href="#cite_ref-LucasStettenheim1972_393-0">a</a> <a href="#cite_ref-LucasStettenheim1972_393-1">b</a> <a href="#cite_ref-LucasStettenheim1972_393-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLucasStettenheim1972" class="citation book cs1">Lucas, Alfred Martin; Stettenheim, Peter Rich (1972). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=GoIWAAAAYAAJ">Avian Anatomy Integument</a>. U.S. Government Printing Office. p. 597.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Avian+Anatomy+Integument&rft.pages=597&rft.pub=U.S.+Government+Printing+Office&rft.date=1972&rft.aulast=Lucas&rft.aufirst=Alfred+Martin&rft.au=Stettenheim%2C+Peter+Rich&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DGoIWAAAAYAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-394"><a href="#cite_ref-394">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFZhengZhouWangZhang2013" class="citation magazine cs1">Zheng, X.; Zhou, Z.; Wang, X.; Zhang, F.; Zhang, X.; Wang, Y.; Xu, X. (2013). "Hind wings in basal birds and the evolution of leg feathers". Science. Vol. 339, no. 6125. pp. 1309–1312. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2013Sci...339.1309Z">2013Sci...339.1309Z</a>. <a href="/wiki/CiteSeerX_(identifier)" class="mw-redirect" title="CiteSeerX (identifier)">CiteSeerX</a> <a rel="nofollow" class="external text" href="https://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1031.5732">10.1.1.1031.5732</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1126%2Fscience.1228753">10.1126/science.1228753</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/23493711">23493711</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:206544531">206544531</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Science&rft.atitle=Hind+wings+in+basal+birds+and+the+evolution+of+leg+feathers&rft.volume=339&rft.issue=6125&rft.pages=1309-1312&rft.date=2013&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A206544531%23id-name%3DS2CID&rft_id=info%3Abibcode%2F2013Sci...339.1309Z&rft_id=https%3A%2F%2Fciteseerx.ist.psu.edu%2Fviewdoc%2Fsummary%3Fdoi%3D10.1.1.1031.5732%23id-name%3DCiteSeerX&rft_id=info%3Apmid%2F23493711&rft_id=info%3Adoi%2F10.1126%2Fscience.1228753&rft.aulast=Zheng&rft.aufirst=X.&rft.au=Zhou%2C+Z.&rft.au=Wang%2C+X.&rft.au=Zhang%2C+F.&rft.au=Zhang%2C+X.&rft.au=Wang%2C+Y.&rft.au=Xu%2C+X.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Campbell52-395"><a href="#cite_ref-Campbell52_395-0">^</a> <a href="#CITEREFCampbellLack1985">Campbell & Lack 1985</a>, p. 52 </li> <li id="cite_note-ScottMcFarland2010-396"><a href="#cite_ref-ScottMcFarland2010_396-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFScottMcFarland2010" class="citation book cs1">Scott, S. David; McFarland, Casey (2010). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=LhdExsnFNKIC&pg=PA15">Bird Feathers: A Guide to North American Species</a>. Stackpole Books. p. 15. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8117-4217-7" title="Special:BookSources/978-0-8117-4217-7"><bdi>978-0-8117-4217-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Bird+Feathers%3A+A+Guide+to+North+American+Species&rft.pages=15&rft.pub=Stackpole+Books&rft.date=2010&rft.isbn=978-0-8117-4217-7&rft.aulast=Scott&rft.aufirst=S.+David&rft.au=McFarland%2C+Casey&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DLhdExsnFNKIC%26pg%3DPA15&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill39-397"><a href="#cite_ref-Pettingill39_397-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 39 </li> <li id="cite_note-398"><a href="#cite_ref-398">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAndersson1994" class="citation book cs1">Andersson, Malte B. (1994). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=lNnHdvzBlTYC">Sexual Selection</a>. <a href="/wiki/Princeton_University_Press" title="Princeton University Press">Princeton University Press</a>. p. 269. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-691-00057-2" title="Special:BookSources/978-0-691-00057-2"><bdi>978-0-691-00057-2</bdi></a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230119114446/https://books.google.com/books?id=lNnHdvzBlTYC">Archived</a> from the original on 2023-01-19. Retrieved 2017-03-15.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Sexual+Selection&rft.pages=269&rft.pub=Princeton+University+Press&rft.date=1994&rft.isbn=978-0-691-00057-2&rft.aulast=Andersson&rft.aufirst=Malte+B.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DlNnHdvzBlTYC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-399"><a href="#cite_ref-399">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBernsAdams2012" class="citation magazine cs1">Berns, Chelsea M.; Adams, Dean C. (November 11, 2012). "Becoming Different But Staying Alike: Patterns of Sexual Size and Shape Dimorphism in Bills of Hummingbirds". Evolutionary Biology. Vol. 40, no. 2. pp. 246–260. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fs11692-012-9206-3">10.1007/s11692-012-9206-3</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0071-3260">0071-3260</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Evolutionary+Biology&rft.atitle=Becoming+Different+But+Staying+Alike%3A+Patterns+of+Sexual+Size+and+Shape+Dimorphism+in+Bills+of+Hummingbirds&rft.volume=40&rft.issue=2&rft.pages=246-260&rft.date=2012-11-11&rft_id=info%3Adoi%2F10.1007%2Fs11692-012-9206-3&rft.issn=0071-3260&rft.aulast=Berns&rft.aufirst=Chelsea+M.&rft.au=Adams%2C+Dean+C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-400"><a href="#cite_ref-400">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcGrawHillStradiParker2002" class="citation magazine cs1">McGraw, K. J.; Hill, G. E.; Stradi, R.; Parker, R. S. (2002). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20050828183926/http://www.aces.edu/dept/hilllab/81.pdf">"The effect of dietary carotenoid access on sexual dichromatism and plumage pigment composition in the American goldfinch"</a> (PDF). Comparative Biochemistry and Physiology Part B-Biochemistry and Molecular Biology. Vol. 131, no. 2. pp. 261–269. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FS1096-4959%2801%2900500-0">10.1016/S1096-4959(01)00500-0</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/11818247">11818247</a>. Archived from <a rel="nofollow" class="external text" href="http://www.aces.edu/dept/hilllab/81.pdf">the original</a> (PDF) on August 28, 2005.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Comparative+Biochemistry+and+Physiology+Part+B-Biochemistry+and+Molecular+Biology&rft.atitle=The+effect+of+dietary+carotenoid+access+on+sexual+dichromatism+and+plumage+pigment+composition+in+the+American+goldfinch&rft.volume=131&rft.issue=2&rft.pages=261-269&rft.date=2002&rft_id=info%3Adoi%2F10.1016%2FS1096-4959%2801%2900500-0&rft_id=info%3Apmid%2F11818247&rft.aulast=McGraw&rft.aufirst=K.+J.&rft.au=Hill%2C+G.+E.&rft.au=Stradi%2C+R.&rft.au=Parker%2C+R.+S.&rft_id=http%3A%2F%2Fwww.aces.edu%2Fdept%2Fhilllab%2F81.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-401"><a href="#cite_ref-401">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOwensHartley1998" class="citation magazine cs1">Owens, I. P. F.; Hartley, I. R. (1998). "Sexual dimorphism in birds: why are there so many different forms of dimorphism?". <a href="/wiki/Proceedings_of_the_Royal_Society_B" class="mw-redirect" title="Proceedings of the Royal Society B">Proceedings of the Royal Society B</a>. Vol. 265, no. 1394. pp. 397–407. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1098%2Frspb.1998.0308">10.1098/rspb.1998.0308</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/50849">50849</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1688905">1688905</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Proceedings+of+the+Royal+Society+B&rft.atitle=Sexual+dimorphism+in+birds%3A+why+are+there+so+many+different+forms+of+dimorphism%3F&rft.volume=265&rft.issue=1394&rft.pages=397-407&rft.date=1998&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC1688905%23id-name%3DPMC&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F50849%23id-name%3DJSTOR&rft_id=info%3Adoi%2F10.1098%2Frspb.1998.0308&rft.aulast=Owens&rft.aufirst=I.+P.+F.&rft.au=Hartley%2C+I.+R.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-402"><a href="#cite_ref-402">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFrederick_II1943" class="citation book cs1">Frederick II, (Holy Roman Emperor) (1943). Wood, Casey Albert; Fyfe, Florence Marjorie (eds.). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=TccPuWKAxBkC&pg=PA70">De Arte Venardi Cum Avibus: Being the De Arte Venandi Cum Avibus of Frederick II of Hohenstaufen</a> [The Art of Falconry]. Stanford University Press. p. 72. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8047-0374-1" title="Special:BookSources/978-0-8047-0374-1"><bdi>978-0-8047-0374-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=De+Arte+Venardi+Cum+Avibus%3A+Being+the+De+Arte+Venandi+Cum+Avibus+of+Frederick+II+of+Hohenstaufen&rft.pages=72&rft.pub=Stanford+University+Press&rft.date=1943&rft.isbn=978-0-8047-0374-1&rft.aulast=Frederick+II&rft.aufirst=%28Holy+Roman+Emperor%29&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DTccPuWKAxBkC%26pg%3DPA70&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Cooper1870-403"><a href="#cite_ref-Cooper1870_403-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCooper1870" class="citation book cs1">Cooper, J.G. (1870). Baird, S.F. (ed.). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=bfURAwAAQBAJ&pg=PA570">Ornithology</a>. Geological Survey of California, J.D. Whitney, State Geologist. p. 570. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-5-87984-211-1" title="Special:BookSources/978-5-87984-211-1"><bdi>978-5-87984-211-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Ornithology&rft.pages=570&rft.pub=Geological+Survey+of+California%2C+J.D.+Whitney%2C+State+Geologist&rft.date=1870&rft.isbn=978-5-87984-211-1&rft.aulast=Cooper&rft.aufirst=J.G.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DbfURAwAAQBAJ%26pg%3DPA570&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Panama-404"><a href="#cite_ref-Panama_404-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRidgelyGwynne1989" class="citation book cs1">Ridgely, Robert S.; Gwynne, John A. Jr. (1989). Birds of Panama with Costa Rica, Nicaragua, and Honduras. Princeton University Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-691-08529-6" title="Special:BookSources/978-0-691-08529-6"><bdi>978-0-691-08529-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds+of+Panama+with+Costa+Rica%2C+Nicaragua%2C+and+Honduras&rft.pub=Princeton+University+Press&rft.date=1989&rft.isbn=978-0-691-08529-6&rft.aulast=Ridgely&rft.aufirst=Robert+S.&rft.au=Gwynne%2C+John+A.+Jr.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Rand-405"><a href="#cite_ref-Rand_405-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRand1954" class="citation magazine cs1">Rand, A.L. (June 1954). <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/wilson/v066n02/p0127-p0134.pdf">"On the spurs on birds' wings"</a> (PDF). The Wilson Bulletin. Vol. 66, no. 2. pp. 127–134. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160303165850/http://sora.unm.edu/sites/default/files/journals/wilson/v066n02/p0127-p0134.pdf">Archived</a> (PDF) from the original on 2016-03-03. Retrieved 2017-04-24.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Wilson+Bulletin&rft.atitle=On+the+spurs+on+birds%27+wings&rft.volume=66&rft.issue=2&rft.pages=127-134&rft.date=1954-06&rft.aulast=Rand&rft.aufirst=A.L.&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fwilson%2Fv066n02%2Fp0127-p0134.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill56-406"><a href="#cite_ref-Pettingill56_406-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 56 </li> <li id="cite_note-407"><a href="#cite_ref-407">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDunnAlderfer2006" class="citation book cs1">Dunn, Jon L.; Alderfer, Jonathan, eds. (2006). Field Guide to the Birds of North America. Washington, D.C.: National Geographic Society. p. 10. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7922-5314-3" title="Special:BookSources/978-0-7922-5314-3"><bdi>978-0-7922-5314-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Field+Guide+to+the+Birds+of+North+America&rft.place=Washington%2C+D.C.&rft.pages=10&rft.pub=National+Geographic+Society&rft.date=2006&rft.isbn=978-0-7922-5314-3&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Terres995-408"><a href="#cite_ref-Terres995_408-0">^</a> <a href="#CITEREFTerres1980">Terres 1980</a>, p. 995 </li> <li id="cite_note-409"><a href="#cite_ref-409">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLarsenGoller2002" class="citation magazine cs1">Larsen, O. N.; Goller, Franz (2002). <a rel="nofollow" class="external text" href="http://jeb.biologists.org/cgi/content/full/205/1/25">"Direct observation of syringeal muscle function in songbirds and a parrot"</a>. The Journal of Experimental Biology. Vol. 205, no. Pt 1. pp. 25–35. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/11818409">11818409</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20151222080812/http://jeb.biologists.org/content/205/1/25.full">Archived</a> from the original on 2015-12-22. Retrieved 2017-01-22.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+Experimental+Biology&rft.atitle=Direct+observation+of+syringeal+muscle+function+in+songbirds+and+a+parrot&rft.volume=205&rft.issue=Pt+1&rft.pages=25-35&rft.date=2002&rft_id=info%3Apmid%2F11818409&rft.aulast=Larsen&rft.aufirst=O.+N.&rft.au=Goller%2C+Franz&rft_id=http%3A%2F%2Fjeb.biologists.org%2Fcgi%2Fcontent%2Ffull%2F205%2F1%2F25&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-410"><a href="#cite_ref-410">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSuthers1990" class="citation magazine cs1">Suthers, R.A. (October 1990). "Contributions to birdsong from the left and right sides of the intact syrinx". Nature. Vol. 347, no. 6292. pp. 473–477. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1990Natur.347..473S">1990Natur.347..473S</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1038%2F347473a0">10.1038/347473a0</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nature&rft.atitle=Contributions+to+birdsong+from+the+left+and+right+sides+of+the+intact+syrinx&rft.volume=347&rft.issue=6292&rft.pages=473-477&rft.date=1990-10&rft_id=info%3Adoi%2F10.1038%2F347473a0&rft_id=info%3Abibcode%2F1990Natur.347..473S&rft.aulast=Suthers&rft.aufirst=R.A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Cade1982-411"><a href="#cite_ref-Cade1982_411-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCade1982" class="citation book cs1">Cade, Thomas Joseph (1982). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=55fwAAAAMAAJ">The falcons of the world</a>. Ithaca, N.Y.: Comstock/Cornell University Press. p. 13. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8014-1454-1" title="Special:BookSources/978-0-8014-1454-1"><bdi>978-0-8014-1454-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+falcons+of+the+world&rft.place=Ithaca%2C+N.Y.&rft.pages=13&rft.pub=Comstock%2FCornell+University+Press&rft.date=1982&rft.isbn=978-0-8014-1454-1&rft.aulast=Cade&rft.aufirst=Thomas+Joseph&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D55fwAAAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-MollerBarbosa1998-412"><a href="#cite_ref-MollerBarbosa1998_412-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMo̸llerBarbosaCuervoLope1998" class="citation magazine cs1">Mo̸ller, A. P.; Barbosa, A.; Cuervo, J. J.; Lope, F. d.; Merino, S.; Saino, N. (1998). "Sexual selection and tail streamers in the barn swallow". Proceedings of the Royal Society B: Biological Sciences. Vol. 265, no. 1394. pp. 409–414. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1098%2Frspb.1998.0309">10.1098/rspb.1998.0309</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0962-8452">0962-8452</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1688894">1688894</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Proceedings+of+the+Royal+Society+B%3A+Biological+Sciences&rft.atitle=Sexual+selection+and+tail+streamers+in+the+barn+swallow&rft.volume=265&rft.issue=1394&rft.pages=409-414&rft.date=1998&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC1688894%23id-name%3DPMC&rft.issn=0962-8452&rft_id=info%3Adoi%2F10.1098%2Frspb.1998.0309&rft.aulast=Mo%CC%B8ller&rft.aufirst=A.+P.&rft.au=Barbosa%2C+A.&rft.au=Cuervo%2C+J.+J.&rft.au=Lope%2C+F.+d.&rft.au=Merino%2C+S.&rft.au=Saino%2C+N.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-MatyjasiakJabŁoński2001-413"><a href="#cite_ref-MatyjasiakJabŁoński2001_413-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMatyjasiakJabŁoński2001" class="citation magazine cs1">Matyjasiak, Piotr; JabŁoński, Piotr G. (2001). "Hypothetical mechanisms of the initial evolution of sexually dimorphic tail streamers in Hirundinidae". <a href="/wiki/Evolution_(journal)" title="Evolution (journal)">Evolution</a>. Vol. 55, no. 2. p. 446. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1554%2F0014-3820%282001%29055%5B0446%3AHMOTIE%5D2.0.CO%3B2">10.1554/0014-3820(2001)055[0446:HMOTIE]2.0.CO;2</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0014-3820">0014-3820</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/11308101">11308101</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Evolution&rft.atitle=Hypothetical+mechanisms+of+the+initial+evolution+of+sexually+dimorphic+tail+streamers+in+Hirundinidae&rft.volume=55&rft.issue=2&rft.pages=446&rft.date=2001&rft.issn=0014-3820&rft_id=info%3Apmid%2F11308101&rft_id=info%3Adoi%2F10.1554%2F0014-3820%282001%29055%5B0446%3AHMOTIE%5D2.0.CO%3B2&rft.aulast=Matyjasiak&rft.aufirst=Piotr&rft.au=Jab%C5%81o%C5%84ski%2C+Piotr+G.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Buchanan2000-414"><a href="#cite_ref-Buchanan2000_414-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBuchanan2000" class="citation magazine cs1">Buchanan, K. L. (2000). "The effect of tail streamer length on aerodynamic performance in the barn swallow". Behavioral Ecology. Vol. 11, no. 2. pp. 228–238. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fbeheco%2F11.2.228">10.1093/beheco/11.2.228</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/1465-7279">1465-7279</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Behavioral+Ecology&rft.atitle=The+effect+of+tail+streamer+length+on+aerodynamic+performance+in+the+barn+swallow&rft.volume=11&rft.issue=2&rft.pages=228-238&rft.date=2000&rft_id=info%3Adoi%2F10.1093%2Fbeheco%2F11.2.228&rft.issn=1465-7279&rft.aulast=Buchanan&rft.aufirst=K.+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-415"><a href="#cite_ref-415">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFowlerFreedmanScannella2009" class="citation magazine cs1">Fowler, D.W.; Freedman, E.A.; Scannella, J.B. (2009). Pizzari, Tom (ed.). "Predatory Functional Morphology in Raptors: Interdigital Variation in Talon Size Is Related to Prey Restraint and Immobilisation Technique". PLoS ONE. Vol. 4, no. 11. pp. e7999. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2009PLoSO...4.7999F">2009PLoSO...4.7999F</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1371%2Fjournal.pone.0007999">10.1371/journal.pone.0007999</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2776979">2776979</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/19946365">19946365</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=PLoS+ONE&rft.atitle=Predatory+Functional+Morphology+in+Raptors%3A+Interdigital+Variation+in+Talon+Size+Is+Related+to+Prey+Restraint+and+Immobilisation+Technique&rft.volume=4&rft.issue=11&rft.pages=e7999&rft.date=2009&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2776979%23id-name%3DPMC&rft_id=info%3Apmid%2F19946365&rft_id=info%3Adoi%2F10.1371%2Fjournal.pone.0007999&rft_id=info%3Abibcode%2F2009PLoSO...4.7999F&rft.aulast=Fowler&rft.aufirst=D.W.&rft.au=Freedman%2C+E.A.&rft.au=Scannella%2C+J.B.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Parallel-416"><a href="#cite_ref-Parallel_416-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFainHoude2004" class="citation magazine cs1">Fain, Matthew G.; Houde, Peter (2004). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170709030601/http://biology-web.nmsu.edu/~houde/Parallel_radiations.pdf">"Parallel radiations in the primary clades of birds"</a> (PDF). <a href="/wiki/Evolution_(journal)" title="Evolution (journal)">Evolution</a>. Vol. 58, no. 11. pp. 2558–2573. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1554%2F04-235">10.1554/04-235</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/15612298">15612298</a>. Archived from <a rel="nofollow" class="external text" href="http://biology-web.nmsu.edu/~houde/Parallel_radiations.pdf">the original</a> (PDF) on July 9, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Evolution&rft.atitle=Parallel+radiations+in+the+primary+clades+of+birds&rft.volume=58&rft.issue=11&rft.pages=2558-2573&rft.date=2004&rft_id=info%3Adoi%2F10.1554%2F04-235&rft_id=info%3Apmid%2F15612298&rft.aulast=Fain&rft.aufirst=Matthew+G.&rft.au=Houde%2C+Peter&rft_id=http%3A%2F%2Fbiology-web.nmsu.edu%2F~houde%2FParallel_radiations.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-417"><a href="#cite_ref-417">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFParker1891" class="citation magazine cs1">Parker, W. K. (1891). <a rel="nofollow" class="external text" href="https://www.biodiversitylibrary.org/page/31083330">"On the Morphology of a Reptilian Bird, Opisthocomus hoazin"</a>. Transactions of the Zoological Society of London. Vol. 13, no. 2. pp. 43–89. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1096-3642.1891.tb00045.x">10.1111/j.1096-3642.1891.tb00045.x</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170701235816/http://www.biodiversitylibrary.org/page/31083330">Archived</a> from the original on 2017-07-01. Retrieved 2018-02-21.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Transactions+of+the+Zoological+Society+of+London&rft.atitle=On+the+Morphology+of+a+Reptilian+Bird%2C+Opisthocomus+hoazin&rft.volume=13&rft.issue=2&rft.pages=43-89&rft.date=1891&rft_id=info%3Adoi%2F10.1111%2Fj.1096-3642.1891.tb00045.x&rft.aulast=Parker&rft.aufirst=W.+K.&rft_id=https%3A%2F%2Fwww.biodiversitylibrary.org%2Fpage%2F31083330&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-418"><a href="#cite_ref-418">^</a> Sir <a href="/wiki/Walter_Lawry_Buller" class="mw-redirect" title="Walter Lawry Buller">Walter Lawry Buller</a> (1888): A History of the Birds of New Zealand. London <a rel="nofollow" class="external text" href="http://www.nzetc.org/tm/scholarly/tei-BulBird-t1-g1-t2-body-d138.html">excerpt</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110727144959/http://www.nzetc.org/tm/scholarly/tei-BulBird-t1-g1-t2-body-d138.html">Archived</a> 2011-07-27 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> from Zealand Electronic Text Centre collection </li> <li id="cite_note-419"><a href="#cite_ref-419">^</a> <a href="#CITEREFNewton,_et_al.1899">Newton, et al. 1899</a>, p. 948 </li> <li id="cite_note-420"><a href="#cite_ref-420">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRomerParsons1977" class="citation book cs1">Romer, Alfred Sherwood; Parsons, Thomas S. (1977). The Vertebrate Body. Philadelphia, PA: Holt-Saunders. pp. 205–208. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-03-910284-5" title="Special:BookSources/978-0-03-910284-5"><bdi>978-0-03-910284-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Vertebrate+Body&rft.place=Philadelphia%2C+PA&rft.pages=205-208&rft.pub=Holt-Saunders&rft.date=1977&rft.isbn=978-0-03-910284-5&rft.aulast=Romer&rft.aufirst=Alfred+Sherwood&rft.au=Parsons%2C+Thomas+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Pettingill33-421"><a href="#cite_ref-Pettingill33_421-0">^</a> <a href="#CITEREFPettingill1985">Pettingill 1985</a>, p. 33 </li> <li id="cite_note-Proctor54-422"><a href="#cite_ref-Proctor54_422-0">^</a> <a href="#CITEREFProctorLynch1998">Proctor & Lynch 1998</a>, p. 54 </li> <li id="cite_note-Raptors-423"><a href="#cite_ref-Raptors_423-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFerguson-LeesChristie2001" class="citation book cs1">Ferguson-Lees, James; Christie, David A. (2001). Raptors of the World. London: Christopher Helm. p. 27. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7136-8026-3" title="Special:BookSources/978-0-7136-8026-3"><bdi>978-0-7136-8026-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Raptors+of+the+World&rft.place=London&rft.pages=27&rft.pub=Christopher+Helm&rft.date=2001&rft.isbn=978-0-7136-8026-3&rft.aulast=Ferguson-Lees&rft.aufirst=James&rft.au=Christie%2C+David+A.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-424"><a href="#cite_ref-424">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHickman2008" class="citation magazine cs1">Hickman, Scott (2008). "The trouble with tertials". Auk. Vol. 125, no. 2. p. 493. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1525%2Fauk.2008.2408">10.1525/auk.2008.2408</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Auk&rft.atitle=The+trouble+with+tertials&rft.volume=125&rft.issue=2&rft.pages=493&rft.date=2008&rft_id=info%3Adoi%2F10.1525%2Fauk.2008.2408&rft.aulast=Hickman&rft.aufirst=Scott&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-425"><a href="#cite_ref-425">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBergerLunk1954" class="citation magazine cs1">Berger, A.J.; Lunk, W.A. (1954). <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/wilson/v066n02/p0119-p0126.pdf">"The Pterylosis of the Nestling Coua ruficeps"</a> (PDF). The Wilson Bulletin. Vol. 66, no. 2. pp. 119–126. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20220808145956/http://sora.unm.edu/sites/default/files/journals/wilson/v066n02/p0119-p0126.pdf">Archived</a> (PDF) from the original on 2022-08-08. Retrieved 2017-01-16.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Wilson+Bulletin&rft.atitle=The+Pterylosis+of+the+Nestling+Coua+ruficeps&rft.volume=66&rft.issue=2&rft.pages=119-126&rft.date=1954&rft.aulast=Berger&rft.aufirst=A.J.&rft.au=Lunk%2C+W.A.&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fwilson%2Fv066n02%2Fp0119-p0126.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Carnaby11-426"><a href="#cite_ref-Carnaby11_426-0">^</a> <a href="#CITEREFCarnaby2008">Carnaby 2008</a>, p. 11 </li> <li id="cite_note-SchoddeMason1999-427"><a href="#cite_ref-SchoddeMason1999_427-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSchoddeMason1999" class="citation book cs1">Schodde, R; Mason, IJ (1999). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=XXbJoaGF36YC&pg=PT1122">Directory of Australian Birds: Passerines: Passerines</a>. Csiro Publishing. p. 1122. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-643-10293-4" title="Special:BookSources/978-0-643-10293-4"><bdi>978-0-643-10293-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Directory+of+Australian+Birds%3A+Passerines%3A+Passerines&rft.pages=1122&rft.pub=Csiro+Publishing&rft.date=1999&rft.isbn=978-0-643-10293-4&rft.aulast=Schodde&rft.aufirst=R&rft.au=Mason%2C+IJ&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DXXbJoaGF36YC%26pg%3DPT1122&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-428"><a href="#cite_ref-428">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKlasing1999" class="citation magazine cs1">Klasing, Kirk C. (1999). "Avian gastrointestinal anatomy and physiology". Seminars in Avian and Exotic Pet Medicine. Vol. 8, no. 2. pp. 42–50. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FS1055-937X%2899%2980036-X">10.1016/S1055-937X(99)80036-X</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Seminars+in+Avian+and+Exotic+Pet+Medicine&rft.atitle=Avian+gastrointestinal+anatomy+and+physiology&rft.volume=8&rft.issue=2&rft.pages=42-50&rft.date=1999&rft_id=info%3Adoi%2F10.1016%2FS1055-937X%2899%2980036-X&rft.aulast=Klasing&rft.aufirst=Kirk+C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-429"><a href="#cite_ref-429">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGosner1993" class="citation magazine cs1">Gosner, Kenneth L. (June 1993). <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/wilson/v105n02/p0316-p0324.pdf">"Scopate Tomia: An Adaptation for Handling Hard-shelled Prey?"</a> (PDF). The Wilson Bulletin. Vol. 105, no. 2. pp. 316–324. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160304081831/http://sora.unm.edu/sites/default/files/journals/wilson/v105n02/p0316-p0324.pdf">Archived</a> (PDF) from the original on 2016-03-04. Retrieved 2017-01-17.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Wilson+Bulletin&rft.atitle=Scopate+Tomia%3A+An+Adaptation+for+Handling+Hard-shelled+Prey%3F&rft.volume=105&rft.issue=2&rft.pages=316-324&rft.date=1993-06&rft.aulast=Gosner&rft.aufirst=Kenneth+L.&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fwilson%2Fv105n02%2Fp0316-p0324.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-430"><a href="#cite_ref-430">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOrnelas" class="citation magazine cs1">Ornelas, Juan Francisco. <a rel="nofollow" class="external text" href="http://sora.unm.edu/sites/default/files/journals/auk/v111n03/p0703-p0710.pdf">"Serrate Tomia: An Adaptation for Nectar Robbing in Hummingbirds?"</a> (PDF). The Auk. Vol. 111, no. 3. pp. 703–710. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160305195625/http://sora.unm.edu/sites/default/files/journals/auk/v111n03/p0703-p0710.pdf">Archived</a> (PDF) from the original on 2016-03-05. Retrieved 2017-01-17.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Auk&rft.atitle=Serrate+Tomia%3A+An+Adaptation+for+Nectar+Robbing+in+Hummingbirds%3F&rft.volume=111&rft.issue=3&rft.pages=703-710&rft.aulast=Ornelas&rft.aufirst=Juan+Francisco&rft_id=http%3A%2F%2Fsora.unm.edu%2Fsites%2Fdefault%2Ffiles%2Fjournals%2Fauk%2Fv111n03%2Fp0703-p0710.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-431"><a href="#cite_ref-431">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMadgeBurn1988" class="citation book cs1">Madge, Steve; Burn, Hilary (1988). Wildfowl. London: Christopher Helm. pp. 143–144. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7470-2201-5" title="Special:BookSources/978-0-7470-2201-5"><bdi>978-0-7470-2201-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Wildfowl&rft.place=London&rft.pages=143-144&rft.pub=Christopher+Helm&rft.date=1988&rft.isbn=978-0-7470-2201-5&rft.aulast=Madge&rft.aufirst=Steve&rft.au=Burn%2C+Hilary&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-432"><a href="#cite_ref-432">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSchleucher2004" class="citation magazine cs1">Schleucher, Elke (2004). "Torpor in birds: taxonomy, energetics, and ecology". Physiological and Biochemical Zoology. Vol. 77, no. 6. pp. 942–949. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F423744">10.1086/423744</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/15674768">15674768</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Physiological+and+Biochemical+Zoology&rft.atitle=Torpor+in+birds%3A+taxonomy%2C+energetics%2C+and+ecology&rft.volume=77&rft.issue=6&rft.pages=942-949&rft.date=2004&rft_id=info%3Adoi%2F10.1086%2F423744&rft_id=info%3Apmid%2F15674768&rft.aulast=Schleucher&rft.aufirst=Elke&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-433"><a href="#cite_ref-433">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBrigham1992" class="citation magazine cs1">Brigham, R. Mark (1992). "Daily torpor in a free-ranging goatsucker, the common poorwill (Phalaenoptilus nuttallii)". Physiological Zoology. Vol. 65, no. 2. pp. 457–472. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2Fphyszool.65.2.30158263">10.1086/physzool.65.2.30158263</a>. <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/30158263">30158263</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Physiological+Zoology&rft.atitle=Daily+torpor+in+a+free-ranging+goatsucker%2C+the+common+poorwill+%28Phalaenoptilus+nuttallii%29&rft.volume=65&rft.issue=2&rft.pages=457-472&rft.date=1992&rft_id=info%3Adoi%2F10.1086%2Fphyszool.65.2.30158263&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F30158263%23id-name%3DJSTOR&rft.aulast=Brigham&rft.aufirst=R.+Mark&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-434"><a href="#cite_ref-434">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFReference-OED-Underwing" class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://www.oed.com/search/dictionary/?q=Underwing">"Underwing"</a>. <a href="/wiki/Oxford_English_Dictionary" title="Oxford English Dictionary">Oxford English Dictionary</a> (Online ed.). <a href="/wiki/Oxford_University_Press" title="Oxford University Press">Oxford University Press</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Underwing&rft.btitle=Oxford+English+Dictionary&rft.edition=Online&rft.pub=Oxford+University+Press&rft_id=https%3A%2F%2Fwww.oed.com%2Fsearch%2Fdictionary%2F%3Fq%3DUnderwing&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> (Subscription or <a rel="nofollow" class="external text" href="https://www.oed.com/public/login/loggingin#withyourlibrary">participating institution membership</a> required.) </li> <li id="cite_note-RAOU1991-435"><a href="#cite_ref-RAOU1991_435-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation magazine cs1">"Wing Span". RAOU Newsletter. Vol. 21, no. 4. 2011. p. 17. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/23961486">23961486</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=RAOU+Newsletter&rft.atitle=Wing+Span&rft.volume=21&rft.issue=4&rft.pages=17&rft.date=2011&rft_id=info%3Aoclcnum%2F23961486&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Wheelock-436">^ <a href="#cite_ref-Wheelock_436-0">a</a> <a href="#cite_ref-Wheelock_436-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWheelock1904" class="citation book cs1">Wheelock, Irene Grosvenor (1904). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=RZoaAAAAYAAJ&pg=PR15">Birds of California: An Introduction to More than 300 Common Birds of the State and Adjacent Islands</a>. Chicago: A.C. McClurg. p. 15. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/2064174">2064174</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds+of+California%3A+An+Introduction+to+More+than+300+Common+Birds+of+the+State+and+Adjacent+Islands&rft.place=Chicago&rft.pages=15&rft.pub=A.C.+McClurg&rft.date=1904&rft_id=info%3Aoclcnum%2F2064174&rft.aulast=Wheelock&rft.aufirst=Irene+Grosvenor&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DRZoaAAAAYAAJ%26pg%3DPR15&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-nebraskabirdlib-437"><a href="#cite_ref-nebraskabirdlib_437-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.nebraskabirdlibrary.org/resources/glossary-of-bird-terms/">"Glossary of Bird Terms"</a>. www.nebraskabirdlibrary.org. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170327081244/http://www.nebraskabirdlibrary.org/resources/glossary-of-bird-terms/">Archived</a> from the original on March 27, 2017. Retrieved March 26, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.nebraskabirdlibrary.org&rft.atitle=Glossary+of+Bird+Terms&rft_id=http%3A%2F%2Fwww.nebraskabirdlibrary.org%2Fresources%2Fglossary-of-bird-terms%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Gill102-438"><a href="#cite_ref-Gill102_438-0">^</a> <a href="#CITEREFGill1995">Gill 1995</a>, p. 102 </li> <li id="cite_note-439"><a href="#cite_ref-439">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFReference-OED-vagrant" class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://www.oed.com/search/dictionary/?q=vagrant">"vagrant"</a>. <a href="/wiki/Oxford_English_Dictionary" title="Oxford English Dictionary">Oxford English Dictionary</a> (Online ed.). <a href="/wiki/Oxford_University_Press" title="Oxford University Press">Oxford University Press</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=vagrant&rft.btitle=Oxford+English+Dictionary&rft.edition=Online&rft.pub=Oxford+University+Press&rft_id=https%3A%2F%2Fwww.oed.com%2Fsearch%2Fdictionary%2F%3Fq%3Dvagrant&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> (Subscription or <a rel="nofollow" class="external text" href="https://www.oed.com/public/login/loggingin#withyourlibrary">participating institution membership</a> required.) </li> <li id="cite_note-Alderfer2012-440"><a href="#cite_ref-Alderfer2012_440-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAlderfer2012" class="citation book cs1">Alderfer, Jonathan K. (2012). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=FkT761I4150C&pg=PT33">Bird-watcher's Bible: A Complete Treasury: Science, Know-how, Beauty, Lore</a>. National Geographic. p. 32. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4262-0964-2" title="Special:BookSources/978-1-4262-0964-2"><bdi>978-1-4262-0964-2</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Bird-watcher%27s+Bible%3A+A+Complete+Treasury%3A+Science%2C+Know-how%2C+Beauty%2C+Lore&rft.pages=32&rft.pub=National+Geographic&rft.date=2012&rft.isbn=978-1-4262-0964-2&rft.aulast=Alderfer&rft.aufirst=Jonathan+K.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DFkT761I4150C%26pg%3DPT33&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Kahn2007-441"><a href="#cite_ref-Kahn2007_441-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKahn2007" class="citation book cs1">Kahn, Cynthia M. (2007). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=eE2IvM10IX4C&pg=PA849">The Merck/Merial Manual For Pet Health: The complete health resource for your dog, cat, horse or other pets – in everyday language</a>. Simon and Schuster. p. 849. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-911910-99-5" title="Special:BookSources/978-0-911910-99-5"><bdi>978-0-911910-99-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Merck%2FMerial+Manual+For+Pet+Health%3A+The+complete+health+resource+for+your+dog%2C+cat%2C+horse+or+other+pets+%E2%80%93+in+everyday+language&rft.pages=849&rft.pub=Simon+and+Schuster&rft.date=2007&rft.isbn=978-0-911910-99-5&rft.aulast=Kahn&rft.aufirst=Cynthia+M.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DeE2IvM10IX4C%26pg%3DPA849&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Sherwin,_2010-442"><a href="#cite_ref-Sherwin,_2010_442-0">^</a> Sherwin, C.M., (2010). The welfare and ethical assessment of housing for egg production. In The Welfare of Domestic Fowl and Other Captive Birds, I.J.H. Duncan and P. Hawkins (eds), Springer, pp. 237–258 </li> <li id="cite_note-443"><a href="#cite_ref-443">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPotzschLewisNicolGreen2001" class="citation magazine cs1">Potzsch, C. J.; Lewis, K.; Nicol, C. J.; Green, L. E. (2001). "A cross-sectional study of the prevalence of vent pecking in laying hens in alternative systems and its associations with feather pecking, management and disease". Applied Animal Behaviour Science. Vol. 74, no. 4. pp. 259–272. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FS0168-1591%2801%2900167-8">10.1016/S0168-1591(01)00167-8</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Applied+Animal+Behaviour+Science&rft.atitle=A+cross-sectional+study+of+the+prevalence+of+vent+pecking+in+laying+hens+in+alternative+systems+and+its+associations+with+feather+pecking%2C+management+and+disease&rft.volume=74&rft.issue=4&rft.pages=259-272&rft.date=2001&rft_id=info%3Adoi%2F10.1016%2FS0168-1591%2801%2900167-8&rft.aulast=Potzsch&rft.aufirst=C.+J.&rft.au=Lewis%2C+K.&rft.au=Nicol%2C+C.+J.&rft.au=Green%2C+L.+E.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-444"><a href="#cite_ref-444">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFReference-OED-Wattle" class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://www.oed.com/search/dictionary/?q=Wattle">"Wattle"</a>. <a href="/wiki/Oxford_English_Dictionary" title="Oxford English Dictionary">Oxford English Dictionary</a> (Online ed.). <a href="/wiki/Oxford_University_Press" title="Oxford University Press">Oxford University Press</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Wattle&rft.btitle=Oxford+English+Dictionary&rft.edition=Online&rft.pub=Oxford+University+Press&rft_id=https%3A%2F%2Fwww.oed.com%2Fsearch%2Fdictionary%2F%3Fq%3DWattle&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> (Subscription or <a rel="nofollow" class="external text" href="https://www.oed.com/public/login/loggingin#withyourlibrary">participating institution membership</a> required.) </li> <li id="cite_note-CruickshankCruickshank1976-445"><a href="#cite_ref-CruickshankCruickshank1976_445-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCruickshankCruickshank1976" class="citation book cs1">Cruickshank, Allan D.; Cruickshank, Helen Gere (1976). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=96KxUxvA4H4C&pg=PA97">1001 Questions Answered about Birds</a>. Courier Corporation. p. 97. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-486-23315-4" title="Special:BookSources/978-0-486-23315-4"><bdi>978-0-486-23315-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=1001+Questions+Answered+about+Birds&rft.pages=97&rft.pub=Courier+Corporation&rft.date=1976&rft.isbn=978-0-486-23315-4&rft.aulast=Cruickshank&rft.aufirst=Allan+D.&rft.au=Cruickshank%2C+Helen+Gere&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D96KxUxvA4H4C%26pg%3DPA97&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Kochan1995-446"><a href="#cite_ref-Kochan1995_446-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKochan1995" class="citation book cs1">Kochan, Jack B. (September 1995). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=ybRPAAAAYAAJ">Bills & mouths</a>. Stackpole Books. p. 12. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8117-3057-0" title="Special:BookSources/978-0-8117-3057-0"><bdi>978-0-8117-3057-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Bills+%26+mouths&rft.pages=12&rft.pub=Stackpole+Books&rft.date=1995-09&rft.isbn=978-0-8117-3057-0&rft.aulast=Kochan&rft.aufirst=Jack+B.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DybRPAAAAYAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-StarkSclater1900-447"><a href="#cite_ref-StarkSclater1900_447-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStark1900" class="citation book cs1">Stark, Arthur Cowell (1900). <a rel="nofollow" class="external text" href="https://biodiversitylibrary.org/page/19014806">The Birds of South Africa Vol. 1</a>. Vol. 1. London: R. H. Porter. p. 23. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180928003631/https://www.biodiversitylibrary.org/page/19014806">Archived</a> from the original on 2018-09-28. Retrieved 2018-09-27.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Birds+of+South+Africa+Vol.+1&rft.place=London&rft.pages=23&rft.pub=R.+H.+Porter&rft.date=1900&rft.aulast=Stark&rft.aufirst=Arthur+Cowell&rft_id=https%3A%2F%2Fbiodiversitylibrary.org%2Fpage%2F19014806&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Kricher2015-448"><a href="#cite_ref-Kricher2015_448-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKricher2015" class="citation book cs1">Kricher, John (February 18, 2015). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=b2sZBgAAQBAJ&pg=PA273">A Neotropical Companion: An Introduction to the Animals, Plants, and Ecosystems of the New World Tropics. Illustrated by Andrea S. LeJeune</a>. Princeton University Press. p. 273. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4008-6691-5" title="Special:BookSources/978-1-4008-6691-5"><bdi>978-1-4008-6691-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Neotropical+Companion%3A+An+Introduction+to+the+Animals%2C+Plants%2C+and+Ecosystems+of+the+New+World+Tropics.+Illustrated+by+Andrea+S.+LeJeune&rft.pages=273&rft.pub=Princeton+University+Press&rft.date=2015-02-18&rft.isbn=978-1-4008-6691-5&rft.aulast=Kricher&rft.aufirst=John&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Db2sZBgAAQBAJ%26pg%3DPA273&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-449"><a href="#cite_ref-449">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOgilvieWallace1975" class="citation magazine cs1">Ogilvie, M.A.; Wallace, D.I.M. (1975). "Field identification of grey geese". British Birds. Vol. 68. pp. 57–67.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=British+Birds&rft.atitle=Field+identification+of+grey+geese&rft.volume=68&rft.pages=57-67&rft.date=1975&rft.aulast=Ogilvie&rft.aufirst=M.A.&rft.au=Wallace%2C+D.I.M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-450"><a href="#cite_ref-450">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCeurstemont2012" class="citation web cs1">Ceurstemont, Sandrine (January 25, 2012). <a rel="nofollow" class="external text" href="https://www.newscientist.com/blogs/nstv/2012/01/first-slow-mo-video-of-goose-flying-upside-down.html">"Goose flying upside down captured in slow-mo movie"</a>. New Scientist TV. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170817082810/https://www.newscientist.com/blogs/nstv/2012/01/first-slow-mo-video-of-goose-flying-upside-down.html">Archived</a> from the original on August 17, 2017. Retrieved April 19, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Goose+flying+upside+down+captured+in+slow-mo+movie&rft.pub=New+Scientist+TV&rft.date=2012-01-25&rft.aulast=Ceurstemont&rft.aufirst=Sandrine&rft_id=https%3A%2F%2Fwww.newscientist.com%2Fblogs%2Fnstv%2F2012%2F01%2Ffirst-slow-mo-video-of-goose-flying-upside-down.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Attenborough1998-451"><a href="#cite_ref-Attenborough1998_451-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAttenborough1998" class="citation book cs1">Attenborough, David (September 24, 1998). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=HO0PAQAAMAAJ">The life of birds</a>. BBC. p. 49. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-563-38792-3" title="Special:BookSources/978-0-563-38792-3"><bdi>978-0-563-38792-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+life+of+birds&rft.pages=49&rft.pub=BBC&rft.date=1998-09-24&rft.isbn=978-0-563-38792-3&rft.aulast=Attenborough&rft.aufirst=David&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DHO0PAQAAMAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-DunnAlderfer2006-452"><a href="#cite_ref-DunnAlderfer2006_452-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDunnAlderfer2006" class="citation book cs1">Dunn, Jon Lloyd; Alderfer, Jonathan K. (2006). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=gA-rfkTZi1YC&pg=PA12">National Geographic Field Guide to the Birds of North America</a>. Washington D.C.: National Geographic Books. p. 12. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7922-5314-3" title="Special:BookSources/978-0-7922-5314-3"><bdi>978-0-7922-5314-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=National+Geographic+Field+Guide+to+the+Birds+of+North+America&rft.place=Washington+D.C.&rft.pages=12&rft.pub=National+Geographic+Books&rft.date=2006&rft.isbn=978-0-7922-5314-3&rft.aulast=Dunn&rft.aufirst=Jon+Lloyd&rft.au=Alderfer%2C+Jonathan+K.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DgA-rfkTZi1YC%26pg%3DPA12&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Bengal1872-453"><a href="#cite_ref-Bengal1872_453-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBrooksEtáwah1872" class="citation book cs1">Brooks, W.E.; Etáwah, C.E. (1872). The Honorary Secretaries (ed.). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=5s5TAAAAcAAJ&pg=PA65">Proceedings of the Asiatic Society of Bengal: 1872 – Brooks on Imperial Eagles of India</a>. Calcutta: C.B. Lewis, Baptist Mission Press. p. 65.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Proceedings+of+the+Asiatic+Society+of+Bengal%3A+1872+%E2%80%93+Brooks+on+Imperial+Eagles+of+India&rft.place=Calcutta&rft.pages=65&rft.pub=C.B.+Lewis%2C+Baptist+Mission+Press&rft.date=1872&rft.aulast=Brooks&rft.aufirst=W.E.&rft.au=Et%C3%A1wah%2C+C.E.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D5s5TAAAAcAAJ%26pg%3DPA65&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Floyd2008_498-454"><a href="#cite_ref-Floyd2008_498_454-0">^</a> <a href="#CITEREFFloyd2008">Floyd 2008</a>, p. 498 </li> <li id="cite_note-455"><a href="#cite_ref-455">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJones" class="citation web cs1">Jones, Alan K. <a rel="nofollow" class="external text" href="https://theparrotsocietyuk.org/site/index.php/parrot-information/veterinary-advice/wing-clipping/">"Wing Clipping in Pet Birds - a study and comparison of techniques"</a>. The Parrot Society UK. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210116155210/https://theparrotsocietyuk.org/site/index.php/parrot-information/veterinary-advice/wing-clipping/">Archived</a> from the original on January 16, 2021. Retrieved December 21, 2020.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Wing+Clipping+in+Pet+Birds+-+a+study+and+comparison+of+techniques&rft.pub=The+Parrot+Society+UK&rft.aulast=Jones&rft.aufirst=Alan+K&rft_id=https%3A%2F%2Ftheparrotsocietyuk.org%2Fsite%2Findex.php%2Fparrot-information%2Fveterinary-advice%2Fwing-clipping%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Hess-456"><a href="#cite_ref-Hess_456-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHess2017" class="citation web cs1">Hess, Laurie, DVM (February 27, 2017). <a rel="nofollow" class="external text" href="https://www.petmd.com/bird/grooming/how-clip-birds-wings">"How to Clip a Bird's Wings"</a>. PetMD. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20201029234730/https://www.petmd.com/bird/grooming/how-clip-birds-wings">Archived</a> from the original on 29 October 2020. Retrieved 22 December 2020.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=PetMD&rft.atitle=How+to+Clip+a+Bird%27s+Wings&rft.date=2017-02-27&rft.aulast=Hess&rft.aufirst=Laurie%2C+DVM&rft_id=https%3A%2F%2Fwww.petmd.com%2Fbird%2Fgrooming%2Fhow-clip-birds-wings&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"><code class="cs1-code">{{<a href="/wiki/Template:Cite_web" title="Template:Cite web">cite web</a>}}</code>: CS1 maint: multiple names: authors list (<a href="/wiki/Category:CS1_maint:_multiple_names:_authors_list" title="Category:CS1 maint: multiple names: authors list">link</a>) </li> <li id="cite_note-Speer2015-457"><a href="#cite_ref-Speer2015_457-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSpeer2015" class="citation book cs1">Speer, Brian (2015). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=tclQCwAAQBAJ">Current Therapy in Avian Medicine and Surgery</a>. Elsevier Health Sciences. p. 700. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-323-24367-4" title="Special:BookSources/978-0-323-24367-4"><bdi>978-0-323-24367-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Current+Therapy+in+Avian+Medicine+and+Surgery&rft.pages=700&rft.pub=Elsevier+Health+Sciences&rft.date=2015&rft.isbn=978-0-323-24367-4&rft.aulast=Speer&rft.aufirst=Brian&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DtclQCwAAQBAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-458"><a href="#cite_ref-458">^</a> Baumel, J.J. (1993) Handbook of Avian Anatomy: Nomina Anatomica Avium. 2nd Ed. Nuttall Ornithological Club. Cambridge, MA </li> <li id="cite_note-459"><a href="#cite_ref-459">^</a> <a href="#CITEREFFeduccia1999">Feduccia 1999</a>, pp. 16–18 </li> <li id="cite_note-birdacademy-460"><a href="#cite_ref-birdacademy_460-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-terms/">"Bird Academy's A-to-Z Glossary of Bird Terms"</a>. September 9, 2016. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170320144412/https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-terms/">Archived</a> from the original on March 20, 2017. Retrieved March 19, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Bird+Academy%27s+A-to-Z+Glossary+of+Bird+Terms&rft.date=2016-09-09&rft_id=https%3A%2F%2Facademy.allaboutbirds.org%2Fbird-academys-a-to-z-glossary-of-bird-terms%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-Elphick2007-461"><a href="#cite_ref-Elphick2007_461-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFElphick2007" class="citation book cs1">Elphick, Jonathan (2007). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=j91I9I4pq20C&pg=PT159">The Atlas of Bird Migration: Tracing the Great Journeys of the World's Birds</a>. Struik. pp. 154–155. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-77007-499-6" title="Special:BookSources/978-1-77007-499-6"><bdi>978-1-77007-499-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Atlas+of+Bird+Migration%3A+Tracing+the+Great+Journeys+of+the+World%27s+Birds&rft.pages=154-155&rft.pub=Struik&rft.date=2007&rft.isbn=978-1-77007-499-6&rft.aulast=Elphick&rft.aufirst=Jonathan&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dj91I9I4pq20C%26pg%3DPT159&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988">[<a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot">permanent dead link</a>‍] </li> <li id="cite_note-Williams94-462"><a href="#cite_ref-Williams94_462-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWilliams2005" class="citation book cs1">Williams, Ernest H. Williams Jr. (2005). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=VoV7CclhNJcC&pg=PA94">The Nature Handbook: A Guide to Observing the Great Outdoors</a>. Oxford University Press. p. 94. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-972075-0" title="Special:BookSources/978-0-19-972075-0"><bdi>978-0-19-972075-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Nature+Handbook%3A+A+Guide+to+Observing+the+Great+Outdoors&rft.pages=94&rft.pub=Oxford+University+Press&rft.date=2005&rft.isbn=978-0-19-972075-0&rft.aulast=Williams&rft.aufirst=Ernest+H.+Williams+Jr.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DVoV7CclhNJcC%26pg%3DPA94&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"> </li> <li id="cite_note-463"><a href="#cite_ref-463">^</a> <a href="#CITEREFCoues1890">Coues 1890</a>, p. 187 </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Bibliography">Bibliography</h2>[<a href="/w/index.php?title=Glossary_of_bird_terms&action=edit&section=28" title="Edit section: Bibliography">edit</a>]</div> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBird2004" class="citation book cs1">Bird, David Michael (2004). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=HTX6BatQFDgC&pg=PA4">The Bird Almanac: A Guide to Essential Facts and Figures of the World's Birds</a>. Firefly Books. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-55297-925-9" title="Special:BookSources/978-1-55297-925-9"><bdi>978-1-55297-925-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Bird+Almanac%3A+A+Guide+to+Essential+Facts+and+Figures+of+the+World%27s+Birds&rft.pub=Firefly+Books&rft.date=2004&rft.isbn=978-1-55297-925-9&rft.aulast=Bird&rft.aufirst=David+Michael&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DHTX6BatQFDgC%26pg%3DPA4&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCampbellLack1985" class="citation book cs1">Campbell, Bruce; Lack, Elizabeth, eds. (1985). A Dictionary of Birds. Carlton, England: T and A D Poyser. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-85661-039-4" title="Special:BookSources/978-0-85661-039-4"><bdi>978-0-85661-039-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Dictionary+of+Birds&rft.place=Carlton%2C+England&rft.pub=T+and+A+D+Poyser&rft.date=1985&rft.isbn=978-0-85661-039-4&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCarnaby2008" class="citation book cs1">Carnaby, Trevor (2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=hh11gLdZyDgC&pg=PA11">Beat about the Bush: Birds</a>. Johannesburg: Jacana Media. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-77009-241-9" title="Special:BookSources/978-1-77009-241-9"><bdi>978-1-77009-241-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Beat+about+the+Bush%3A+Birds&rft.place=Johannesburg&rft.pub=Jacana+Media&rft.date=2008&rft.isbn=978-1-77009-241-9&rft.aulast=Carnaby&rft.aufirst=Trevor&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dhh11gLdZyDgC%26pg%3DPA11&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChandler1916" class="citation book cs1">Chandler, Asa C. (1916). <a rel="nofollow" class="external text" href="https://archive.org/stream/studyofstructure00chan#page/n0/mode/1up">A study of the structure of feathers, with reference to their taxonomic significance</a>. Berkeley, CA: University of California Press.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+study+of+the+structure+of+feathers%2C+with+reference+to+their+taxonomic+significance&rft.place=Berkeley%2C+CA&rft.pub=University+of+California+Press&rft.date=1916&rft.aulast=Chandler&rft.aufirst=Asa+C.&rft_id=https%3A%2F%2Farchive.org%2Fstream%2Fstudyofstructure00chan%23page%2Fn0%2Fmode%2F1up&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChekeMannAllen2001" class="citation book cs1">Cheke, Robert A.; Mann, Clive F. & Allen, Richard (2001). Sunbirds: A Guide to the Sunbirds, Flowerpeckers, Spiderhunters and Sugarbirds of the World. London: Christopher Helm. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-873403-80-8" title="Special:BookSources/978-1-873403-80-8"><bdi>978-1-873403-80-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Sunbirds%3A+A+Guide+to+the+Sunbirds%2C+Flowerpeckers%2C+Spiderhunters+and+Sugarbirds+of+the+World&rft.place=London&rft.pub=Christopher+Helm&rft.date=2001&rft.isbn=978-1-873403-80-8&rft.aulast=Cheke&rft.aufirst=Robert+A.&rft.au=Mann%2C+Clive+F.&rft.au=Allen%2C+Richard&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCoues1890" class="citation book cs1">Coues, Elliott (1890). <a rel="nofollow" class="external text" href="https://archive.org/details/in.ernet.dli.2015.32046">Handbook of Field and General Ornithology</a>. London: Macmillan and Co. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/263166207">263166207</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+Field+and+General+Ornithology&rft.place=London&rft.pub=Macmillan+and+Co&rft.date=1890&rft_id=info%3Aoclcnum%2F263166207&rft.aulast=Coues&rft.aufirst=Elliott&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fin.ernet.dli.2015.32046&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFdel_HoyoElliottSargatal1992" class="citation book cs1">del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi, eds. (1992). <a href="/wiki/Handbook_of_the_Birds_of_the_World" title="Handbook of the Birds of the World">Handbook of the Birds of the World, Volume 1: Ostrich to Ducks</a>. Barcelona: Lynx Edicions. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-84-87334-10-8" title="Special:BookSources/978-84-87334-10-8"><bdi>978-84-87334-10-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+the+Birds+of+the+World%2C+Volume+1%3A+Ostrich+to+Ducks&rft.place=Barcelona&rft.pub=Lynx+Edicions&rft.date=1992&rft.isbn=978-84-87334-10-8&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEhrlichDobkinWheyePimm1994" class="citation book cs1"><a href="/wiki/Paul_R._Ehrlich" title="Paul R. Ehrlich">Ehrlich, Paul R.</a>; Dobkin, Darryl A.; Wheye, Darryl; Pimm, Stuart L. (1994). <a rel="nofollow" class="external text" href="https://archive.org/details/birdwatchershand00ehrl">The Birdwatcher's Handbook</a>. Oxford University Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-858407-0" title="Special:BookSources/978-0-19-858407-0"><bdi>978-0-19-858407-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Birdwatcher%27s+Handbook&rft.pub=Oxford+University+Press&rft.date=1994&rft.isbn=978-0-19-858407-0&rft.aulast=Ehrlich&rft.aufirst=Paul+R.&rft.au=Dobkin%2C+Darryl+A.&rft.au=Wheye%2C+Darryl&rft.au=Pimm%2C+Stuart+L.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fbirdwatchershand00ehrl&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFElphick2016" class="citation book cs1">Elphick, Jonathan (2016). Birds: A Complete Guide to their Biology and Behavior. Buffalo, New York: Firefly Books. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-77085-762-9" title="Special:BookSources/978-1-77085-762-9"><bdi>978-1-77085-762-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds%3A+A+Complete+Guide+to+their+Biology+and+Behavior&rft.place=Buffalo%2C+New+York&rft.pub=Firefly+Books&rft.date=2016&rft.isbn=978-1-77085-762-9&rft.aulast=Elphick&rft.aufirst=Jonathan&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFeduccia1999" class="citation book cs1">Feduccia, Alan (1999). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=8QRKV7eSqmIC&pg=PA16">The Origin and Evolution of Birds</a>. Yale University Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-300-07861-9" title="Special:BookSources/978-0-300-07861-9"><bdi>978-0-300-07861-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Origin+and+Evolution+of+Birds&rft.pub=Yale+University+Press&rft.date=1999&rft.isbn=978-0-300-07861-9&rft.aulast=Feduccia&rft.aufirst=Alan&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D8QRKV7eSqmIC%26pg%3DPA16&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFloyd2008" class="citation book cs1">Floyd, Ted (2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=Nn3Hz6OwjTAC">Smithsonian Field Guide to the Birds of North America</a>. HarperCollins. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-06-112040-4" title="Special:BookSources/978-0-06-112040-4"><bdi>978-0-06-112040-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Smithsonian+Field+Guide+to+the+Birds+of+North+America&rft.pub=HarperCollins&rft.date=2008&rft.isbn=978-0-06-112040-4&rft.aulast=Floyd&rft.aufirst=Ted&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DNn3Hz6OwjTAC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGill1995" class="citation book cs1">Gill, Frank B. (1995). Ornithology (2 ed.). New York, NY: W. H. Freeman and Company. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7167-2415-5" title="Special:BookSources/978-0-7167-2415-5"><bdi>978-0-7167-2415-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Ornithology&rft.place=New+York%2C+NY&rft.edition=2&rft.pub=W.+H.+Freeman+and+Company&rft.date=1995&rft.isbn=978-0-7167-2415-5&rft.aulast=Gill&rft.aufirst=Frank+B.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHowell2007" class="citation book cs1">Howell, Steve N. G. (2007). Gulls of the Americas. New York: Houghton Mifflin Company. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-618-72641-7" title="Special:BookSources/978-0-618-72641-7"><bdi>978-0-618-72641-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Gulls+of+the+Americas&rft.place=New+York&rft.pub=Houghton+Mifflin+Company&rft.date=2007&rft.isbn=978-0-618-72641-7&rft.aulast=Howell&rft.aufirst=Steve+N.+G.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKingMcLelland1985" class="citation book cs1">King, Anthony Stuart; McLelland, John, eds. (1985). Form and Function in Birds, volume 3. London, UK: Academic Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-407503-0" title="Special:BookSources/978-0-12-407503-0"><bdi>978-0-12-407503-0</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Form+and+Function+in+Birds%2C+volume+3&rft.place=London%2C+UK&rft.pub=Academic+Press&rft.date=1985&rft.isbn=978-0-12-407503-0&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLovetteFitzpatrick2016" class="citation book cs1">Lovette, Irby J.; Fitzpatrick, John W. (2016). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=OiaNDAAAQBAJ">Handbook of Bird Biology</a>. Wiley. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-118-29104-7" title="Special:BookSources/978-1-118-29104-7"><bdi>978-1-118-29104-7</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+Bird+Biology&rft.pub=Wiley&rft.date=2016&rft.isbn=978-1-118-29104-7&rft.aulast=Lovette&rft.aufirst=Irby+J.&rft.au=Fitzpatrick%2C+John+W.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DOiaNDAAAQBAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNewton,_et_al.1899" class="citation book cs1">Newton, Alfred; Gadow, Hans Friedrich; Lydekker, Richard; Roy, Charles Smart; Shufeldt, Robert Wilson (1899). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=2u8ZAAAAYAAJ">A Dictionary of Birds</a>. London: A. and C. Black. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/623393918">623393918</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=A+Dictionary+of+Birds&rft.place=London&rft.pub=A.+and+C.+Black&rft.date=1899&rft_id=info%3Aoclcnum%2F623393918&rft.aulast=Newton&rft.aufirst=Alfred&rft.au=Gadow%2C+Hans+Friedrich&rft.au=Lydekker%2C+Richard&rft.au=Roy%2C+Charles+Smart&rft.au=Shufeldt%2C+Robert+Wilson&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D2u8ZAAAAYAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMobley,_et_al.2008" class="citation book cs1">Mobley, Jason A.; Brewer, Duncan; Elphick, Jonathan; Hoare, Ben; Unwin, Mike; Woodward, John; et al. (2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=gccfdvSUTg4C">Birds of the World</a>. Tarrytown, NY: Marshall Cavendish. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7614-7775-4" title="Special:BookSources/978-0-7614-7775-4"><bdi>978-0-7614-7775-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Birds+of+the+World&rft.place=Tarrytown%2C+NY&rft.pub=Marshall+Cavendish&rft.date=2008&rft.isbn=978-0-7614-7775-4&rft.aulast=Mobley&rft.aufirst=Jason+A.&rft.au=Brewer%2C+Duncan&rft.au=Elphick%2C+Jonathan&rft.au=Hoare%2C+Ben&rft.au=Unwin%2C+Mike&rft.au=Woodward%2C+John&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DgccfdvSUTg4C&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPettingill1985" class="citation book cs1">Pettingill, Olin Sewall Jr. (1985). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=JE22s15ZqzsC">Ornithology in Laboratory and Field</a>. Orlando, FL: Academic Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-552455-1" title="Special:BookSources/978-0-12-552455-1"><bdi>978-0-12-552455-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Ornithology+in+Laboratory+and+Field&rft.place=Orlando%2C+FL&rft.pub=Academic+Press&rft.date=1985&rft.isbn=978-0-12-552455-1&rft.aulast=Pettingill&rft.aufirst=Olin+Sewall+Jr.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DJE22s15ZqzsC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPettingill2013" class="citation book cs1">Pettingill, Olin Sewall Jr. (2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=livLBAAAQBAJ">Ornithology in Laboratory and Field</a>. Elsevier. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4832-6311-3" title="Special:BookSources/978-1-4832-6311-3"><bdi>978-1-4832-6311-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Ornithology+in+Laboratory+and+Field&rft.pub=Elsevier&rft.date=2013&rft.isbn=978-1-4832-6311-3&rft.aulast=Pettingill&rft.aufirst=Olin+Sewall+Jr.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DlivLBAAAQBAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFProctorLynch1998" class="citation book cs1">Proctor, Noble S.; Lynch, Patrick J. (1998). Manual of Ornithology: Avian Structure and Function. New Haven, CT: Yale University Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-300-07619-6" title="Special:BookSources/978-0-300-07619-6"><bdi>978-0-300-07619-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Manual+of+Ornithology%3A+Avian+Structure+and+Function&rft.place=New+Haven%2C+CT&rft.pub=Yale+University+Press&rft.date=1998&rft.isbn=978-0-300-07619-6&rft.aulast=Proctor&rft.aufirst=Noble+S.&rft.au=Lynch%2C+Patrick+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRoots2006" class="citation book cs1">Roots, Clive (2006). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=7PQD-0dYJLgC">Flightless Birds</a>. Westport, CT: Greenwood Publishing Group. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-313-08394-5" title="Special:BookSources/978-0-313-08394-5"><bdi>978-0-313-08394-5</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Flightless+Birds&rft.place=Westport%2C+CT&rft.pub=Greenwood+Publishing+Group&rft.date=2006&rft.isbn=978-0-313-08394-5&rft.aulast=Roots&rft.aufirst=Clive&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D7PQD-0dYJLgC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFScott2010" class="citation book cs1">Scott, Graham (2010). <a rel="nofollow" class="external text" href="https://archive.org/details/Essential_Ornithology_by_Graham_Scott">Essential Ornithology</a>. Oxford University Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-19-856997-8" title="Special:BookSources/978-0-19-856997-8"><bdi>978-0-19-856997-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Essential+Ornithology&rft.pub=Oxford+University+Press&rft.date=2010&rft.isbn=978-0-19-856997-8&rft.aulast=Scott&rft.aufirst=Graham&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2FEssential_Ornithology_by_Graham_Scott&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSibley,_et_al.2001" class="citation book cs1"><a href="/wiki/David_Allen_Sibley" title="David Allen Sibley">Sibley, David</a>; et al. (2001). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=_wwhHAAACAAJ">The Sibley Guide to Bird Life & Behaviour</a>. London: Christopher Helm. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7136-6250-4" title="Special:BookSources/978-0-7136-6250-4"><bdi>978-0-7136-6250-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Sibley+Guide+to+Bird+Life+%26+Behaviour&rft.place=London&rft.pub=Christopher+Helm&rft.date=2001&rft.isbn=978-0-7136-6250-4&rft.aulast=Sibley&rft.aufirst=David&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D_wwhHAAACAAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTerres1980" class="citation book cs1"><a href="/wiki/John_Kenneth_Terres" title="John Kenneth Terres">Terres, J. K.</a> (1980). <a rel="nofollow" class="external text" href="https://archive.org/details/audubonsocietyen00terr">The Audubon Society Encyclopedia of North American Birds</a>. New York, NY: Knopf. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-394-46651-4" title="Special:BookSources/978-0-394-46651-4"><bdi>978-0-394-46651-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Audubon+Society+Encyclopedia+of+North+American+Birds&rft.place=New+York%2C+NY&rft.pub=Knopf&rft.date=1980&rft.isbn=978-0-394-46651-4&rft.aulast=Terres&rft.aufirst=J.+K.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Faudubonsocietyen00terr&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTrail2001" class="citation web cs1">Trail, Pepper (2001). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170930001526/https://www.fws.gov/lab/idnotes/WingFeathers-prnt.pdf">"Wing Feathers"</a> (PDF). U.S. Fish and Wildlife Service. Archived from <a rel="nofollow" class="external text" href="https://www.fws.gov/lab/idnotes/WingFeathers-prnt.pdf">the original</a> (PDF) on September 30, 2017. Retrieved August 5, 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Wing+Feathers&rft.pub=U.S.+Fish+and+Wildlife+Service&rft.date=2001&rft.aulast=Trail&rft.aufirst=Pepper&rft_id=https%3A%2F%2Fwww.fws.gov%2Flab%2Fidnotes%2FWingFeathers-prnt.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVinicombe2014" class="citation book cs1">Vinicombe, Keith (2014). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=9eHzAgAAQBAJ&pg=PA14">The Helm Guide to Bird Identification</a>. London: Bloomsbury Publishing. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4729-0554-3" title="Special:BookSources/978-1-4729-0554-3"><bdi>978-1-4729-0554-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Helm+Guide+to+Bird+Identification&rft.place=London&rft.pub=Bloomsbury+Publishing&rft.date=2014&rft.isbn=978-1-4729-0554-3&rft.aulast=Vinicombe&rft.aufirst=Keith&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D9eHzAgAAQBAJ%26pg%3DPA14&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWeaver1981" class="citation book cs1">Weaver, Peter (1981). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=qx64F8iwnJkC">The Birdwatcher's Dictionary</a>. London: Bloomsbury Publishing. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4081-3852-6" title="Special:BookSources/978-1-4081-3852-6"><bdi>978-1-4081-3852-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Birdwatcher%27s+Dictionary&rft.place=London&rft.pub=Bloomsbury+Publishing&rft.date=1981&rft.isbn=978-1-4081-3852-6&rft.aulast=Weaver&rft.aufirst=Peter&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dqx64F8iwnJkC&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGlossary+of+bird+terms" class="Z3988"></li></ul> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 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template">e</abbr></a></li></ul></div><div id="Birds_(class:_Aves)" style="font-size:114%;margin:0 4em"><a href="/wiki/Bird" title="Bird">Birds</a> (<a href="/wiki/Class_(biology)" title="Class (biology)">class</a>: Aves)</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><a href="/wiki/Outline_of_birds" title="Outline of birds">Outline</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Bird_anatomy" title="Bird anatomy">Anatomy</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Beak" title="Beak">Beak</a></li> <li><a href="/wiki/Avian_brain" title="Avian brain">Brain</a></li> <li><a href="/wiki/Crop_(anatomy)#Birds" title="Crop (anatomy)">Crop</a> <ul><li><a href="/wiki/Crop_milk" title="Crop milk">milk</a></li></ul></li> <li><a href="/wiki/Dactyly#bird_digits" title="Dactyly">Dactyly</a></li> <li><a href="/wiki/Bird_egg" title="Bird egg">Eggs</a></li> <li><a href="/wiki/Feather" title="Feather">Feathers</a></li> <li><a href="/wiki/Bird_flight" title="Bird flight">Flight</a></li> <li><a href="/wiki/Uropygial_gland" title="Uropygial gland">Preen gland</a></li> <li><a href="/wiki/Plumage" title="Plumage">Plumage</a></li> <li><a href="/wiki/Bird_vision" title="Bird vision">Vision</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Bird_behaviour" class="mw-redirect" title="Bird behaviour">Behaviour</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bird_vocalization" title="Bird vocalization">Singing</a></li> <li><a href="/wiki/Bird_intelligence" title="Bird intelligence">Intelligence</a></li> <li><a href="/wiki/Bird_migration" title="Bird migration">Migration</a></li> <li><a href="/wiki/Avian_foraging" title="Avian foraging">Foraging</a></li> <li><a href="/wiki/Sexual_selection_in_birds" title="Sexual selection in birds">Sexual selection</a></li> <li><a href="/wiki/Lek_mating" title="Lek mating">Lek mating</a></li> <li><a href="/wiki/Seabird_breeding_behavior" title="Seabird breeding behavior">Seabird breeding</a></li> <li><a href="/wiki/Egg_incubation#Avian_incubation" title="Egg incubation">Incubation</a></li> <li><a href="/wiki/Brood_parasite" class="mw-redirect" title="Brood parasite">Brood parasites</a></li> <li><a href="/wiki/Bird_nest" title="Bird nest">Nesting</a></li> <li><a href="/wiki/Bird_hybrid" title="Bird hybrid">Hybrids</a></li> <li><a href="/wiki/Bird_colony" title="Bird colony">Colony</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Evolution" title="Evolution">Evolution</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Origin_of_birds" title="Origin of birds">Origin of birds</a> <ul><li><a href="/wiki/Theropoda" title="Theropoda">Theropoda</a></li> <li><a href="/wiki/Dinosaur" title="Dinosaur">dinosaurs</a></li></ul></li> <li><a href="/wiki/Origin_of_avian_flight" title="Origin of avian flight">Origin of flight</a></li> <li><a href="/wiki/Evolution_of_birds" title="Evolution of birds">Evolution of birds</a></li> <li><a href="/wiki/Darwin%27s_finches" title="Darwin's finches">Darwin's finches</a></li> <li><a href="/wiki/Seabird" title="Seabird">Seabirds</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_fossil_bird_genera" title="List of fossil bird genera">Fossil birds</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Archaeopteryx" title="Archaeopteryx">Archaeopteryx</a></li> <li><a href="/wiki/Omnivoropterygidae" title="Omnivoropterygidae">Omnivoropterygiformes</a></li> <li><a href="/wiki/Jeholornithidae" title="Jeholornithidae">Jeholornithidae</a></li> <li><a href="/wiki/Confuciusornithiformes" class="mw-redirect" title="Confuciusornithiformes">Confuciusornithiformes</a></li> <li><a href="/wiki/Enantiornithes" title="Enantiornithes">Enantiornithes</a></li> <li><a href="/wiki/Chaoyangiformes" class="mw-redirect" title="Chaoyangiformes">Chaoyangiformes</a></li> <li><a href="/wiki/Patagopterygiformes" title="Patagopterygiformes">Patagopterygiformes</a></li> <li><a href="/wiki/Ambiortiformes" title="Ambiortiformes">Ambiortiformes</a></li> <li><a href="/wiki/Songlingornithiformes" class="mw-redirect" title="Songlingornithiformes">Songlingornithiformes</a></li> <li><a href="/wiki/Hongshanornithidae" title="Hongshanornithidae">Hongshanornithidae</a></li> <li><a href="/wiki/Gansus" title="Gansus">Gansuiformes</a></li> <li><a href="/wiki/Ichthyornithes" title="Ichthyornithes">Ichthyornithiformes</a></li> <li><a href="/wiki/Hesperornithes" title="Hesperornithes">Hesperornithes</a></li> <li><a href="/wiki/Lithornithidae" title="Lithornithidae">Lithornithiformes</a></li> <li><a href="/wiki/Moa" title="Moa">Dinornithiformes</a></li> <li><a href="/wiki/Elephant_bird" title="Elephant bird">Aepyornithiformes</a></li> <li><a href="/wiki/Gastornithiformes" title="Gastornithiformes">Gastornithiformes</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Human_uses_of_birds" title="Human uses of birds">Human interaction</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bird_ringing" title="Bird ringing">Ringing</a></li> <li><a href="/wiki/Ornithology" title="Ornithology">Ornithology</a></li> <li><a href="/wiki/Ornithomancy" title="Ornithomancy">Ornithomancy</a></li> <li><a href="/wiki/Bird_collections" title="Bird collections">Bird collections</a></li> <li><a href="/wiki/Birdwatching" title="Birdwatching">Birdwatching</a> <ul><li><a href="/wiki/Big_year" title="Big year">big year</a></li></ul></li> <li><a href="/wiki/Bird_feeding" title="Bird feeding">Bird feeding</a></li> <li><a href="/wiki/Bird_conservation" title="Bird conservation">Conservation</a></li> <li><a href="/wiki/Aviculture" title="Aviculture">Aviculture</a></li> <li><a href="/wiki/Waterfowl_hunting" title="Waterfowl hunting">Waterfowl hunting</a></li> <li><a href="/wiki/Cockfight" class="mw-redirect" title="Cockfight">Cockfighting</a></li> <li><a href="/wiki/Pigeon_racing" title="Pigeon racing">Pigeon racing</a></li> <li><a href="/wiki/Falconry" title="Falconry">Falconry</a></li> <li><a href="/wiki/Pheasantry" title="Pheasantry">Pheasantry</a></li> <li><a href="/wiki/Imping" title="Imping">Imping</a></li> <li><a href="/wiki/Oology" title="Oology">Egg collecting</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Lists</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_birds" title="List of birds">Families and orders</a></li> <li><a href="/wiki/List_of_bird_genera" title="List of bird genera">Genera</a></li> <li><a class="mw-selflink selflink">Glossary of bird terms</a></li> <li><a href="/wiki/List_of_birds_by_population" title="List of birds by population">List by population</a></li> <li><a href="/wiki/Lists_of_birds_by_region" title="Lists of birds by region">Lists by region</a></li> <li><a href="/wiki/List_of_extinct_bird_species_since_1500" title="List of extinct bird species since 1500">Extinct species since 1500</a></li> <li><a href="/wiki/List_of_Late_Quaternary_prehistoric_bird_species" title="List of Late Quaternary prehistoric bird species">Late Quaternary prehistoric birds</a></li> <li>Notable birds <ul><li><a href="/wiki/List_of_individual_birds" title="List of individual birds">individuals</a></li> <li><a href="/wiki/List_of_fictional_birds" title="List of fictional birds">fictional</a></li></ul></li></ul> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Neornithes" style="font-size:114%;margin:0 4em">Neornithes</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Palaeognathae" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Palaeognathae" title="Palaeognathae">Palaeognathae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Struthionidae" title="Struthionidae">Struthioniformes (ostriches)</a></li> <li><a href="/wiki/Rheidae" title="Rheidae">Rheiformes (rheas)</a></li> <li><a href="/wiki/Tinamou" title="Tinamou">Tinamiformes (tinamous)</a></li> <li><a href="/wiki/Kiwi_(bird)" title="Kiwi (bird)">Apterygiformes (kiwis)</a></li> <li><a href="/wiki/Casuariiformes" title="Casuariiformes">Casuariiformes (emus and cassowaries)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Neognathae" title="Neognathae">N e o g n a t h a e</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Galloanserae_(fowls)" scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Galloanserae" class="mw-redirect" title="Galloanserae">G a l l o a n s e r a e</a> (<a href="/wiki/Fowl" title="Fowl">fowls</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Anseriformes" title="Anseriformes">Anseriformes</a> (waterfowls)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Anatidae" title="Anatidae">Anatidae</a> (<a href="/wiki/Duck" title="Duck">ducks</a>)</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Anatinae" title="Anatinae">Anatinae</a> <ul><li><a href="/wiki/Diving_duck" title="Diving duck">Aythyini</a></li> <li><a href="/wiki/Mergini" title="Mergini">Mergini</a></li> <li><a href="/wiki/Oxyurini" title="Oxyurini">Oxyurini</a></li></ul></li> <li><a href="/wiki/Anserinae" title="Anserinae">Anserinae</a> <ul><li><a href="/wiki/Swan" title="Swan">swans</a></li> <li><a href="/wiki/Goose" title="Goose">true geese</a></li></ul></li> <li><a href="/wiki/Whistling_duck" title="Whistling duck">Dendrocygninae</a></li> <li><a href="/wiki/Freckled_duck" title="Freckled duck">Stictonettinae</a></li> <li><a href="/wiki/Tadorninae" title="Tadorninae">Tadorninae</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Anhimidae" class="mw-redirect" title="Anhimidae">Anhimidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Horned_screamer" title="Horned screamer">Anhima</a></li> <li><a href="/wiki/Chauna" title="Chauna">Chauna</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Anseranatidae" title="Anseranatidae">Anseranatidae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Magpie_goose" title="Magpie goose">Anseranas</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Galliformes" title="Galliformes">Galliformes</a> (<a href="/wiki/Landfowl" class="mw-redirect" title="Landfowl">landfowls</a>- <a href="/wiki/Gamebirds" class="mw-redirect" title="Gamebirds">gamebirds</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cracidae" title="Cracidae">Cracidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cracinae" class="mw-redirect" title="Cracinae">Cracinae</a></li> <li><a href="/wiki/Oreophasinae" class="mw-redirect" title="Oreophasinae">Oreophasinae</a></li> <li><a href="/wiki/Penelopinae" class="mw-redirect" title="Penelopinae">Penelopinae</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Megapodidae" class="mw-redirect" title="Megapodidae">Megapodidae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aepypodius" title="Aepypodius">Aepypodius</a></li> <li><a href="/wiki/Alectura" class="mw-redirect" title="Alectura">Alectura</a></li> <li><a href="/wiki/Eulipoa" class="mw-redirect" title="Eulipoa">Eulipoa</a></li> <li><a href="/wiki/Leipoa" class="mw-redirect" title="Leipoa">Leipoa</a></li> <li><a href="/wiki/Macrocephalon" class="mw-redirect" title="Macrocephalon">Macrocephalon</a></li> <li><a href="/wiki/Megapodius" class="mw-redirect" title="Megapodius">Megapodius</a></li> <li><a href="/wiki/Talegalla" title="Talegalla">Talegalla</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Numididae" class="mw-redirect" title="Numididae">Numididae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Vulturine_guineafowl" title="Vulturine guineafowl">Acryllium</a></li> <li><a href="/wiki/Agelastes" title="Agelastes">Agelastes</a></li> <li><a href="/wiki/Guttera" title="Guttera">Guttera</a></li> <li><a href="/wiki/Numida" class="mw-redirect" title="Numida">Numida</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Odontophoridae" class="mw-redirect" title="Odontophoridae">Odontophoridae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Callipepla" title="Callipepla">Callipepla</a></li> <li><a href="/wiki/Colinus" title="Colinus">Colinus</a></li> <li><a href="/wiki/Cyrtonyx" title="Cyrtonyx">Cyrtonyx</a></li> <li><a href="/wiki/Dactylortyx" class="mw-redirect" title="Dactylortyx">Dactylortyx</a></li> <li><a href="/wiki/Dendrortyx" title="Dendrortyx">Dendrortyx</a></li> <li><a href="/wiki/Odontophorus" class="mw-redirect" title="Odontophorus">Odontophorus</a></li> <li><a href="/wiki/Oreortyx" class="mw-redirect" title="Oreortyx">Oreortyx</a></li> <li><a href="/wiki/Philortyx" class="mw-redirect" title="Philortyx">Philortyx</a></li> <li><a href="/wiki/Rhynchortyx" class="mw-redirect" title="Rhynchortyx">Rhynchortyx</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Phasianidae" title="Phasianidae">Phasianidae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Meleagridinae" class="mw-redirect" title="Meleagridinae">Meleagridinae (turkeys)</a></li> <li><a href="/wiki/Perdicinae" title="Perdicinae">Perdicinae</a></li> <li><a href="/wiki/Phasianinae" title="Phasianinae">Phasianinae (pheasants and relatives)</a></li> <li><a href="/wiki/Grouse" title="Grouse">Tetraoninae</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Neoaves" title="Neoaves">Neoaves</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Columbea" title="Columbea">Columbea</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Columbimorphae" title="Columbimorphae">Columbimorphae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Columbidae" title="Columbidae">Columbiformes (doves and pigeons)</a></li> <li><a href="/wiki/Mesite" title="Mesite">Mesitornithiformes (mesites)</a></li> <li><a href="/wiki/Sandgrouse" title="Sandgrouse">Pterocliformes (sandgrouse)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Mirandornithes" title="Mirandornithes">Mirandornithes</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Flamingo" title="Flamingo">Phoenicopteriformes (flamingos)</a></li> <li><a href="/wiki/Grebe" title="Grebe">Podicipediformes (grebes)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Passerea" title="Passerea">Passerea</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Otidimorphae" title="Otidimorphae">Otidimorphae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cuckoo" title="Cuckoo">Cuculiformes (cuckoos)</a></li> <li><a href="/wiki/Turaco" title="Turaco">Musophagiformes (turacos)</a></li> <li><a href="/wiki/Bustard" title="Bustard">Otidiformes (bustards)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Strisores" title="Strisores">Strisores</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Caprimulgiformes" class="mw-redirect" title="Caprimulgiformes">Caprimulgiformes (nightjars and relatives)</a></li> <li><a href="/wiki/Steatornithiformes" class="mw-redirect" title="Steatornithiformes">Steatornithiformes (oilbirds)</a></li> <li><a href="/wiki/Nyctibiiformes" class="mw-redirect" title="Nyctibiiformes">Nyctibiiformes (potoos)</a></li> <li><a href="/wiki/Podargiformes" class="mw-redirect" title="Podargiformes">Podargiformes (frogmouths)</a></li> <li><a href="/wiki/Aegotheliformes" class="mw-redirect" title="Aegotheliformes">Aegotheliformes (owlet-nightjars)</a></li> <li><a href="/wiki/Apodiformes" title="Apodiformes">Apodiformes (swifts and hummingbirds)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Opisthocomiformes" class="mw-redirect" title="Opisthocomiformes">Opisthocomiformes</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Opisthocomidae" title="Opisthocomidae">Opisthocomiformes (hoatzins)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cursorimorphae" class="mw-redirect" title="Cursorimorphae">Cursorimorphae</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Charadriiformes" title="Charadriiformes">Charadriiformes (gulls and relatives)</a></li> <li><a href="/wiki/Gruiformes" title="Gruiformes">Gruiformes (cranes and relatives)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Phaethontimorphae" class="mw-redirect" title="Phaethontimorphae">Phaethontimorphae</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Tropicbird" title="Tropicbird">Phaethontiformes (tropicbirds)</a></li> <li><a href="/wiki/Eurypygiformes" title="Eurypygiformes">Eurypygiformes (kagus and sunbitterns)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Aequornithes" title="Aequornithes">Aequornithes</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Loon" title="Loon">Gaviiformes (loons or divers)</a></li> <li><a href="/wiki/Penguin" title="Penguin">Sphenisciformes (penguins)</a></li> <li><a href="/wiki/Procellariiformes" title="Procellariiformes">Procellariiformes (albatrosses and petrels)</a></li> <li><a href="/wiki/Stork" title="Stork">Ciconiiformes (storks)</a></li> <li><a href="/wiki/Suliformes" title="Suliformes">Suliformes (cormorants and relatives)</a></li> <li><a href="/wiki/Pelecaniformes" title="Pelecaniformes">Pelecaniformes (pelicans and relatives)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Australaves" title="Australaves">Australaves</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cariamiformes" title="Cariamiformes">Cariamiformes (seriemas and relatives)</a></li> <li><a href="/wiki/Falconiformes" title="Falconiformes">Falconiformes (falcons and relatives)</a></li> <li><a href="/wiki/Parrot" title="Parrot">Psittaciformes (parrots)</a></li> <li><a href="/wiki/Passerine" title="Passerine">Passeriformes (perching birds)</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Afroaves" title="Afroaves">Afroaves</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Accipitriformes" title="Accipitriformes">Accipitriformes (raptors)</a></li> <li><a href="/wiki/Owl" title="Owl">Strigiformes (owls)</a></li> <li><a href="/wiki/Mousebird" title="Mousebird">Coliiformes (mousebirds)</a></li> <li><a href="/wiki/Trogon" title="Trogon">Trogoniformes (trogons and quetzals)</a></li> <li><a href="/wiki/Cuckoo-roller" title="Cuckoo-roller">Leptosomiformes (cuckoo-rollers)</a></li> <li><a href="/wiki/Bucerotiformes" title="Bucerotiformes">Bucerotiformes (hornbills and hoopoes)</a></li> <li><a href="/wiki/Coraciiformes" title="Coraciiformes">Coraciiformes (kingfishers and rollers)</a></li> <li><a href="/wiki/Piciformes" title="Piciformes">Piciformes (woodpeckers and relatives)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /><a href="/wiki/Category:Birds" title="Category:Birds">Category</a></li> <li><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /> <a href="https://commons.wikimedia.org/wiki/Category:Birds" class="extiw" title="commons:Category:Birds">Commons</a></li> <li><a href="/wiki/File:Symbol_portal_class.svg" class="mw-file-description" title="Portal"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16px-Symbol_portal_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/23px-Symbol_portal_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/31px-Symbol_portal_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a> <a href="/wiki/Portal:Birds" title="Portal:Birds">Portal</a></li> <li><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/People_icon.svg/16px-People_icon.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/People_icon.svg/24px-People_icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/37/People_icon.svg/32px-People_icon.svg.png 2x" data-file-width="100" data-file-height="100" /> <a href="/wiki/Wikipedia:WikiProject_Birds" title="Wikipedia:WikiProject Birds">WikiProject</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: 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626 Template:Gli"," 11.58% 680.153 242 Template:Term"," 7.75% 455.301 626 Template:Plain_text"," 5.26% 308.893 8 Template:Sfn"," 4.27% 250.932 13 Template:Navbox"]},"scribunto":{"limitreport-timeusage":{"value":"3.603","limit":"10.000"},"limitreport-memusage":{"value":28891845,"limit":52428800},"limitreport-logs":"anchor_id_list = table#1 {\n [\"CITEREFAdamsPedersen2000\"] = 1,\n [\"CITEREFAlcock1998\"] = 1,\n [\"CITEREFAlderfer2012\"] = 1,\n [\"CITEREFAlderferDunn2007\"] = 1,\n [\"CITEREFAlderton1996\"] = 1,\n [\"CITEREFAlderton1998\"] = 1,\n [\"CITEREFAllen1951\"] = 1,\n [\"CITEREFAlvarezaSanchezAngulo2005\"] = 1,\n [\"CITEREFAnderson2008\"] = 1,\n [\"CITEREFAndersson1994\"] = 1,\n [\"CITEREFAndrew_Tyzack2013\"] = 1,\n [\"CITEREFAragonMøllerSolerSoler1999\"] = 1,\n [\"CITEREFAriasFernandez2001\"] = 1,\n [\"CITEREFAsh\"] = 1,\n [\"CITEREFAthan2008\"] = 1,\n [\"CITEREFAttenborough1998\"] = 1,\n [\"CITEREFAudubonAmadonBull1967\"] = 1,\n [\"CITEREFBairdBrewerRidgway1874\"] = 2,\n [\"CITEREFBarattiAmmannatiMagnelliMassolo2010\"] = 1,\n [\"CITEREFBarrows2000\"] = 1,\n [\"CITEREFBaumel1993\"] = 1,\n [\"CITEREFBeedyPandolfino2013\"] = 1,\n [\"CITEREFBergerLunk1954\"] = 1,\n [\"CITEREFBernsAdams2012\"] = 1,\n [\"CITEREFBertholdBauerWesthead2001\"] = 1,\n [\"CITEREFBierma2004\"] = 1,\n [\"CITEREFBird2004\"] = 1,\n [\"CITEREFBlake1977\"] = 1,\n [\"CITEREFBock1989\"] = 1,\n [\"CITEREFBonseWitter1993\"] = 1,\n [\"CITEREFBorrasPascualSenar2000\"] = 1,\n [\"CITEREFBrigham1992\"] = 1,\n [\"CITEREFBrooksEtáwah1872\"] = 1,\n [\"CITEREFBrown1982\"] = 1,\n [\"CITEREFBuchanan2000\"] = 1,\n [\"CITEREFBuchholz1996\"] = 1,\n [\"CITEREFBuckley1966\"] = 1,\n [\"CITEREFBurke2005\"] = 1,\n [\"CITEREFBurleyVadehra1989\"] = 1,\n [\"CITEREFBurns2008\"] = 1,\n [\"CITEREFBushVillaBovesBrewer2012\"] = 1,\n [\"CITEREFBusseMeissner2015\"] = 1,\n [\"CITEREFButlerDavis2010\"] = 1,\n [\"CITEREFCade1982\"] = 1,\n [\"CITEREFCampbellLack1985\"] = 1,\n [\"CITEREFCarnaby2008\"] = 1,\n [\"CITEREFCeurstemont2012\"] = 1,\n [\"CITEREFChan2001\"] = 1,\n [\"CITEREFChandler1916\"] = 1,\n [\"CITEREFChatterjee2015\"] = 1,\n [\"CITEREFChekeMannAllen2001\"] = 1,\n [\"CITEREFChoiniereMowbray_GoldingVezo2005\"] = 1,\n [\"CITEREFChristensen1970\"] = 1,\n [\"CITEREFChristie1993\"] = 1,\n [\"CITEREFClark1961\"] = 1,\n [\"CITEREFConoverMiller1980\"] = 1,\n [\"CITEREFCooper1870\"] = 1,\n [\"CITEREFCoues1890\"] = 1,\n [\"CITEREFCruickshankCruickshank1976\"] = 1,\n [\"CITEREFCummins1996\"] = 1,\n [\"CITEREFCunninghamAlleyCastroPotter2010\"] = 1,\n [\"CITEREFCuttsSpeakman1994\"] = 1,\n [\"CITEREFDamerow2012\"] = 1,\n [\"CITEREFDamerow2013\"] = 1,\n [\"CITEREFDanchinWagner1997\"] = 1,\n [\"CITEREFDave_Madden2011\"] = 1,\n [\"CITEREFDavison1982\"] = 1,\n [\"CITEREFDayRiepe2015\"] = 1,\n [\"CITEREFDhouailly2009\"] = 1,\n [\"CITEREFDoneley2016\"] = 1,\n [\"CITEREFDooley2005\"] = 1,\n [\"CITEREFDuerden1922\"] = 1,\n [\"CITEREFDunnAlderfer2006\"] = 2,\n [\"CITEREFDunnGarrett1997\"] = 1,\n [\"CITEREFEastman2000\"] = 1,\n [\"CITEREFEhrlich1986\"] = 1,\n [\"CITEREFEhrlichDobkinWheye\"] = 1,\n [\"CITEREFEhrlichDobkinWheye1988\"] = 1,\n [\"CITEREFEhrlichDobkinWheyePimm1994\"] = 1,\n [\"CITEREFEichhorn2005\"] = 1,\n [\"CITEREFElliot1898\"] = 1,\n [\"CITEREFElphick2007\"] = 1,\n [\"CITEREFElphick2016\"] = 1,\n [\"CITEREFEraudDorieJacquetFaivre2008\"] = 1,\n [\"CITEREFEvansHatchwell1992\"] = 1,\n [\"CITEREFFainHoude2004\"] = 1,\n [\"CITEREFFarnerKing2013\"] = 1,\n [\"CITEREFFeduccia1999\"] = 1,\n [\"CITEREFFerguson-LeesChristie2001\"] = 1,\n [\"CITEREFFiskeRintamäkiKarvonen1998\"] = 1,\n [\"CITEREFFloyd2008\"] = 1,\n [\"CITEREFFowlerFreedmanScannella2009\"] = 1,\n [\"CITEREFFrederick_II1943\"] = 1,\n [\"CITEREFGibbon2015\"] = 1,\n [\"CITEREFGill1995\"] = 1,\n [\"CITEREFGirling2003\"] = 1,\n [\"CITEREFGoodmanFisher1962\"] = 1,\n [\"CITEREFGorman2014\"] = 1,\n [\"CITEREFGosner1993\"] = 1,\n [\"CITEREFGrandin2010\"] = 1,\n [\"CITEREFGrouw2013\"] = 1,\n [\"CITEREFGullion1951\"] = 1,\n [\"CITEREFGustafsonChengGarnerPajorc2007\"] = 1,\n [\"CITEREFHallSusanna2005\"] = 1,\n [\"CITEREFHancockKushlan2010\"] = 1,\n [\"CITEREFHarestadBunnel1979\"] = 1,\n [\"CITEREFHarris2014\"] = 1,\n [\"CITEREFHarrisFranklin2000\"] = 1,\n [\"CITEREFHarrison2011\"] = 1,\n [\"CITEREFHauber2014\"] = 1,\n [\"CITEREFHess2017\"] = 1,\n [\"CITEREFHickman2008\"] = 1,\n [\"CITEREFHighfill\"] = 1,\n [\"CITEREFHillMcGraw2006\"] = 1,\n [\"CITEREFHolden2016\"] = 1,\n [\"CITEREFHoseyMelfiSheila_Pankhurst2013\"] = 1,\n [\"CITEREFHosker1936\"] = 1,\n [\"CITEREFHowell2002\"] = 1,\n [\"CITEREFHowell2007\"] = 1,\n [\"CITEREFHowell2014\"] = 1,\n [\"CITEREFHowellLewingtonRussell2014\"] = 1,\n [\"CITEREFHuber-EicherSebo2001\"] = 1,\n [\"CITEREFHudson1910\"] = 1,\n [\"CITEREFHugh_Harrop2004\"] = 1,\n [\"CITEREFHummelBeukenberg1989\"] = 1,\n [\"CITEREFHumphreyParkes1959\"] = 1,\n [\"CITEREFHunton2005\"] = 1,\n [\"CITEREFIan_J._h._DuncanPenny_Hawkins2010\"] = 1,\n [\"CITEREFIrwinStonerCobaugh2013\"] = 1,\n [\"CITEREFJasper1878\"] = 1,\n [\"CITEREFJehl1968\"] = 1,\n [\"CITEREFJenniWinkler1994\"] = 1,\n [\"CITEREFJohnston2013\"] = 2,\n [\"CITEREFJones\"] = 1,\n [\"CITEREFJungNalewayYaraghiHerrera2016\"] = 1,\n [\"CITEREFJuniperParr2003\"] = 1,\n [\"CITEREFJupiterParr2010\"] = 1,\n [\"CITEREFKahn2007\"] = 1,\n [\"CITEREFKaiser2007\"] = 1,\n [\"CITEREFKalstone2006\"] = 1,\n [\"CITEREFKaufman1990\"] = 1,\n [\"CITEREFKennedy2014\"] = 1,\n [\"CITEREFKhanna2005\"] = 1,\n [\"CITEREFKingMcLelland1985\"] = 1,\n [\"CITEREFKlasing1998\"] = 1,\n [\"CITEREFKlasing1999\"] = 1,\n [\"CITEREFKlein1785\"] = 1,\n [\"CITEREFKochan1995\"] = 1,\n [\"CITEREFKovacsMeyers2000\"] = 1,\n [\"CITEREFKricher2015\"] = 1,\n [\"CITEREFKricher2020\"] = 1,\n [\"CITEREFLaboratory_of_Ornithology,_Cornell_University1974\"] = 1,\n [\"CITEREFLack1947\"] = 1,\n [\"CITEREFLarsenGoller2002\"] = 1,\n [\"CITEREFLavelinMeiri2000\"] = 1,\n [\"CITEREFLederer\"] = 1,\n [\"CITEREFLederer1972\"] = 1,\n [\"CITEREFLederer2016\"] = 1,\n [\"CITEREFLengagneLaugaAubin2001\"] = 1,\n [\"CITEREFLeopold1972\"] = 1,\n [\"CITEREFLevi1977\"] = 1,\n [\"CITEREFLi2012\"] = 1,\n [\"CITEREFLillie1941\"] = 1,\n [\"CITEREFLovetteFitzpatrick2016\"] = 1,\n [\"CITEREFLucas1972\"] = 1,\n [\"CITEREFLucasStettenheim1972\"] = 1,\n [\"CITEREFLumeijHommers2008\"] = 1,\n [\"CITEREFMacKay2001\"] = 1,\n [\"CITEREFMadgeBurn1988\"] = 1,\n [\"CITEREFMadgeMcGowan2002\"] = 1,\n [\"CITEREFMandal2012\"] = 1,\n [\"CITEREFMatyjasiakJabŁoński2001\"] = 1,\n [\"CITEREFMaxwell2013\"] = 1,\n [\"CITEREFMayr1946\"] = 1,\n [\"CITEREFMayr2005\"] = 1,\n [\"CITEREFMcAdieKeeling2002\"] = 1,\n [\"CITEREFMcCabe1943\"] = 1,\n [\"CITEREFMcDonald1996\"] = 1,\n [\"CITEREFMcGrawHillStradiParker2002\"] = 1,\n [\"CITEREFMcLelland1991\"] = 1,\n [\"CITEREFMcNab1994\"] = 1,\n [\"CITEREFMobley,_et_al.2008\"] = 1,\n [\"CITEREFMollerHoglund1991\"] = 1,\n [\"CITEREFMolles1999\"] = 1,\n [\"CITEREFMoore2009\"] = 1,\n [\"CITEREFMorrisAcademic_Press1992\"] = 1,\n [\"CITEREFMougeoArroyo2006\"] = 1,\n [\"CITEREFMoustaki2005\"] = 1,\n [\"CITEREFMo̸llerBarbosaCuervoLope1998\"] = 1,\n [\"CITEREFMullarneySvenssonZetterströmGrant1999\"] = 1,\n [\"CITEREFMullerPatone1998\"] = 1,\n [\"CITEREFNational_Geographic_Society2009\"] = 1,\n [\"CITEREFNewman2000\"] = 1,\n [\"CITEREFNewton,_et_al.1899\"] = 1,\n [\"CITEREFNewton1998\"] = 1,\n [\"CITEREFNewton2003\"] = 1,\n [\"CITEREFNewton2008\"] = 1,\n [\"CITEREFNitzsch1867\"] = 1,\n [\"CITEREFNyakupfuka2013\"] = 1,\n [\"CITEREFNysGautronGarcia-RuizHincke2004\"] = 1,\n [\"CITEREFO\u0026#039;Connor1984\"] = 1,\n [\"CITEREFOdumKuenzler1955\"] = 1,\n [\"CITEREFOgilvieWallace1975\"] = 1,\n [\"CITEREFOrnelas\"] = 1,\n [\"CITEREFOsborn1998\"] = 1,\n [\"CITEREFOsmaston1941\"] = 1,\n [\"CITEREFOwensHartley1998\"] = 1,\n [\"CITEREFParker1891\"] = 1,\n [\"CITEREFPartington1835\"] = 1,\n [\"CITEREFPatten2008\"] = 1,\n [\"CITEREFPerrins1974\"] = 1,\n [\"CITEREFPerrinsAttenboroughArlott1987\"] = 1,\n [\"CITEREFPetersonMountfortHollom1954\"] = 1,\n [\"CITEREFPetrie2006\"] = 1,\n [\"CITEREFPettingill1985\"] = 1,\n [\"CITEREFPettingill2013\"] = 1,\n [\"CITEREFPhillips2011\"] = 1,\n [\"CITEREFPierce1911\"] = 1,\n [\"CITEREFPodulkaRohrbaughBonney2003\"] = 2,\n [\"CITEREFPotzschLewisNicolGreen2001\"] = 1,\n [\"CITEREFPower1966\"] = 1,\n [\"CITEREFPrattBeehler2014\"] = 1,\n [\"CITEREFProctorLynch1998\"] = 1,\n [\"CITEREFPrum1999\"] = 1,\n [\"CITEREFPrum2008\"] = 1,\n [\"CITEREFPrumBrush2002\"] = 1,\n [\"CITEREFPrumBrush2003\"] = 1,\n [\"CITEREFPycraft1895\"] = 1,\n [\"CITEREFPycraft1908\"] = 1,\n [\"CITEREFPycraft1911\"] = 1,\n [\"CITEREFPyleHowellYunickDeSante1987\"] = 1,\n [\"CITEREFRalph1969\"] = 1,\n [\"CITEREFRamel\"] = 1,\n [\"CITEREFRamel2008\"] = 1,\n [\"CITEREFRand1954\"] = 1,\n [\"CITEREFRanquiniGarcia1958\"] = 1,\n [\"CITEREFReillyNational_Audubon_Society1968\"] = 1,\n [\"CITEREFReischlSambraus2003\"] = 1,\n [\"CITEREFRicklefs1996\"] = 1,\n [\"CITEREFRidgelyGwynne1989\"] = 1,\n [\"CITEREFRidgelyTudorBrown1994\"] = 1,\n [\"CITEREFRitchison\"] = 1,\n [\"CITEREFRollandDanchinde_Fraipont1998\"] = 1,\n [\"CITEREFRollandJiguetJønssonCondamine2014\"] = 1,\n [\"CITEREFRomanoffRomanoff1949\"] = 1,\n [\"CITEREFRomerParsons1977\"] = 1,\n [\"CITEREFRoots2006\"] = 1,\n [\"CITEREFRosenbergGeistHarpp\"] = 1,\n [\"CITEREFRowinski2011\"] = 1,\n [\"CITEREFRussellWolfeHertzStarr2008\"] = 1,\n [\"CITEREFRyser1985\"] = 1,\n [\"CITEREFSamour2000\"] = 1,\n [\"CITEREFScanes2014\"] = 1,\n [\"CITEREFSchleucher2004\"] = 1,\n [\"CITEREFSchoddeMason1999\"] = 1,\n [\"CITEREFSchreiberBurger2002\"] = 1,\n [\"CITEREFScott2008\"] = 1,\n [\"CITEREFScott2010\"] = 1,\n [\"CITEREFScottMcFarland2010\"] = 1,\n [\"CITEREFSekercioglu2007\"] = 1,\n [\"CITEREFSelby1969\"] = 1,\n [\"CITEREFSharpe1888\"] = 1,\n [\"CITEREFShawkeyPillaiHill2003\"] = 1,\n [\"CITEREFSherwin2010\"] = 1,\n [\"CITEREFSherwinRichardsNicol2010\"] = 1,\n [\"CITEREFSibley,_et_al.2001\"] = 1,\n [\"CITEREFSilver1984\"] = 1,\n [\"CITEREFSkadhaugeErlwangerRuziwaDantzer2003\"] = 1,\n [\"CITEREFSkutch1960\"] = 1,\n [\"CITEREFSorensonPayne2001\"] = 1,\n [\"CITEREFSorensonPayne2002\"] = 1,\n [\"CITEREFSpearman1973\"] = 1,\n [\"CITEREFSpeer2015\"] = 1,\n [\"CITEREFStark1900\"] = 1,\n [\"CITEREFSteeves2005\"] = 1,\n [\"CITEREFStejneger1885\"] = 1,\n [\"CITEREFStettenheim2000\"] = 1,\n [\"CITEREFStiteler2013\"] = 1,\n [\"CITEREFStokesStokes2003\"] = 1,\n [\"CITEREFStokesWilliams1968\"] = 1,\n [\"CITEREFStout2016\"] = 1,\n [\"CITEREFStresemann1963\"] = 1,\n [\"CITEREFSummersCrespi2013\"] = 1,\n [\"CITEREFSundstorm2015\"] = 1,\n [\"CITEREFSuthers1990\"] = 1,\n [\"CITEREFSvenssonGrant1999\"] = 1,\n [\"CITEREFSwan1848\"] = 1,\n [\"CITEREFTerres1980\"] = 1,\n [\"CITEREFTerrillAbel1988\"] = 1,\n [\"CITEREFThorpe,_W._H.1963\"] = 1,\n [\"CITEREFTrail2001\"] = 1,\n [\"CITEREFTsaharMartínez_Del_RioIzhakiArad2005\"] = 1,\n [\"CITEREFTurner1997\"] = 1,\n [\"CITEREFTye1985\"] = 1,\n [\"CITEREFUlmerHauptHicks1962\"] = 1,\n [\"CITEREFUrfi2011\"] = 1,\n [\"CITEREFVideler2005\"] = 1,\n [\"CITEREFVinicombe2014\"] = 1,\n [\"CITEREFVuilleumier2011\"] = 1,\n [\"CITEREFWalls1942\"] = 1,\n [\"CITEREFWalther2005\"] = 1,\n [\"CITEREFWarham1990\"] = 1,\n [\"CITEREFWaters2016\"] = 1,\n [\"CITEREFWeaver1981\"] = 1,\n [\"CITEREFWheelock1904\"] = 1,\n [\"CITEREFWheelwright1985\"] = 1,\n [\"CITEREFWhitney1906\"] = 1,\n [\"CITEREFWhitneySmith1911\"] = 1,\n [\"CITEREFWilliams2005\"] = 1,\n [\"CITEREFWilliamsFlach2003\"] = 1,\n [\"CITEREFYong2013\"] = 1,\n [\"CITEREFZhengZhouWangZhang2013\"] = 1,\n [\"CITEREFZickefoose2014\"] = 1,\n [\"CITEREFZimmer2000\"] = 1,\n [\"CITEREFdel_HoyoElliottSargatal1992\"] = 1,\n [\"CITEREFvan_ZeelandSpruitRodenburg2009\"] = 1,\n [\"Herbst_corpuscle\"] = 1,\n [\"Herbst_corpuscles\"] = 1,\n [\"Pennae_volatus\"] = 1,\n [\"Reticulae\"] = 1,\n [\"abdomen\"] = 1,\n [\"abdomens\"] = 1,\n [\"acrometatarsium\"] = 1,\n [\"acrotarsium\"] = 1,\n [\"addled\"] = 1,\n [\"addled_egg\"] = 1,\n [\"adherent_cup\"] = 1,\n [\"adult_plumage\"] = 1,\n [\"adult_plumages\"] = 1,\n [\"aeries\"] = 1,\n [\"after-feather\"] = 1,\n [\"after-feathers\"] = 1,\n [\"after_feather\"] = 1,\n [\"after_feathers\"] = 1,\n [\"afterfeathers\"] = 1,\n [\"ala\"] = 1,\n [\"alarm_call\"] = 1,\n [\"alarm_calls\"] = 1,\n [\"albumen\"] = 1,\n [\"allo-preening\"] = 1,\n [\"allo_preening\"] = 1,\n [\"alternate_plumages\"] = 1,\n [\"altricial-precocial_spectrum\"] = 1,\n [\"alulae\"] = 1,\n [\"alular_digit\"] = 1,\n [\"alular_digits\"] = 1,\n [\"alular_quill\"] = 1,\n [\"alular_quills\"] = 1,\n [\"alulas\"] = 1,\n [\"amphikinesis\"] = 1,\n [\"ant\"] = 1,\n [\"antiphonal\"] = 1,\n [\"antiphonal_duet\"] = 1,\n [\"antiphonal_duetting\"] = 1,\n [\"apical-spot\"] = 1,\n [\"apical-spots\"] = 1,\n [\"apical_spots\"] = 1,\n [\"apteria\"] = 1,\n [\"arm_pit\"] = 1,\n [\"armpit\"] = 1,\n [\"axillar\"] = 1,\n [\"axillar_region\"] = 1,\n [\"axillars\"] = 1,\n [\"axillary_feathers\"] = 1,\n [\"backs\"] = 1,\n [\"banding\"] = 1,\n [\"barbicel\"] = 1,\n [\"barbicels\"] = 1,\n [\"barbs\"] = 1,\n [\"barbule\"] = 1,\n [\"basic_plumages\"] = 1,\n [\"basihyal\"] = 1,\n [\"bastard-wing\"] = 1,\n [\"bastard-wings\"] = 1,\n [\"bastard_wing\"] = 1,\n [\"bastard_wings\"] = 1,\n [\"beak_color\"] = 1,\n [\"beak_coloring\"] = 1,\n [\"beak_colors\"] = 1,\n [\"beak_colouring\"] = 1,\n [\"beak_colours\"] = 1,\n [\"beaked\"] = 1,\n [\"beaks\"] = 1,\n [\"bellies\"] = 1,\n [\"bill\"] = 1,\n [\"bill-tip_organ\"] = 1,\n [\"bill-tip_organs\"] = 1,\n [\"bill_tip_organs\"] = 1,\n [\"bills\"] = 1,\n [\"billtip-organbilltip-organs\"] = 1,\n [\"billtip_organ\"] = 1,\n [\"bird_anting\"] = 1,\n [\"bird_banding\"] = 1,\n [\"bird_flight\"] = 1,\n [\"bird_flying\"] = 1,\n [\"bird_nest\"] = 1,\n [\"bird_nests\"] = 1,\n [\"bird_strikes\"] = 1,\n [\"birdnest\"] = 1,\n [\"birdnests\"] = 1,\n [\"blood_feather\"] = 1,\n [\"blood_feathers\"] = 1,\n [\"body-down\"] = 1,\n [\"body-down_feather\"] = 1,\n [\"body-down_feathers\"] = 1,\n [\"body_down_feather\"] = 1,\n [\"body_down_feathers\"] = 1,\n [\"boot\"] = 1,\n [\"booted\"] = 1,\n [\"boots\"] = 1,\n [\"breast_bone\"] = 1,\n [\"breast_bones\"] = 1,\n [\"breastbones\"] = 2,\n [\"breasts\"] = 1,\n [\"breeding_colonies\"] = 1,\n [\"breeding_colony\"] = 1,\n [\"breeding_plumage\"] = 1,\n [\"breeding_plumages\"] = 1,\n [\"breeding_territory\"] = 1,\n [\"bristle\"] = 1,\n [\"bristle_feather\"] = 1,\n [\"bristle_feathers\"] = 1,\n [\"bristles\"] = 1,\n [\"brood_parasites\"] = 1,\n [\"brood_parasitism\"] = 1,\n [\"brood_patches\"] = 1,\n [\"broods\"] = 1,\n [\"broody\"] = 1,\n [\"burrow\"] = 1,\n [\"burrows\"] = 1,\n [\"calami\"] = 1,\n [\"calling\"] = 1,\n [\"calls\"] = 1,\n [\"cancella\"] = 1,\n [\"cancellae\"] = 1,\n [\"cancellas\"] = 1,\n [\"canopy_feeding\"] = 1,\n [\"canthi\"] = 1,\n [\"canthus\"] = 1,\n [\"carina\"] = 1,\n [\"carinate_sterna\"] = 1,\n [\"carinate_sternum\"] = 1,\n [\"carinum\"] = 1,\n [\"carnivore\"] = 1,\n [\"carnivores\"] = 1,\n [\"carnivorous\"] = 1,\n [\"carpal-bar\"] = 1,\n [\"carpal-bars\"] = 1,\n [\"carpal_bars\"] = 1,\n [\"caruncles\"] = 1,\n [\"casques\"] = 1,\n [\"cavities\"] = 1,\n [\"cavity\"] = 1,\n [\"ceratobranchial\"] = 1,\n [\"ceres\"] = 1,\n [\"chalaza\"] = 1,\n [\"chalazae\"] = 1,\n [\"cheeks\"] = 1,\n [\"chins\"] = 1,\n [\"cilia\"] = 1,\n [\"claw\"] = 1,\n [\"claws\"] = 1,\n [\"cloacae\"] = 1,\n [\"cloacal_contact\"] = 1,\n [\"cloacas\"] = 1,\n [\"clutches\"] = 1,\n [\"colonial\"] = 1,\n [\"colonies\"] = 1,\n [\"color-morph\"] = 1,\n [\"color-morphs\"] = 1,\n [\"color_morph\"] = 1,\n [\"color_morphs\"] = 1,\n [\"colour-morph\"] = 1,\n [\"colour-morphs\"] = 1,\n [\"colour_morph\"] = 1,\n [\"colour_morphs\"] = 1,\n [\"combs\"] = 1,\n [\"comfort_behavior\"] = 1,\n [\"comfort_behaviors\"] = 1,\n [\"comfort_behaviour\"] = 1,\n [\"comfort_behaviours\"] = 1,\n [\"communal_roost\"] = 1,\n [\"communal_roosting\"] = 1,\n [\"communal_roosts\"] = 1,\n [\"complex_alternate_strategy\"] = 1,\n [\"complex_basic_strategy\"] = 1,\n [\"contact_calls\"] = 1,\n [\"contour\"] = 1,\n [\"contour_feather\"] = 1,\n [\"contour_feathers\"] = 1,\n [\"coping\"] = 1,\n [\"corpuscle_of_Herbst\"] = 1,\n [\"covert\"] = 1,\n [\"covert_feather\"] = 1,\n [\"covert_feathers\"] = 1,\n [\"coxcomb\"] = 1,\n [\"coxcombs\"] = 1,\n [\"crest\"] = 1,\n [\"crest_feathers\"] = 1,\n [\"crests\"] = 1,\n [\"crevice-gleaning\"] = 1,\n [\"crops\"] = 1,\n [\"crowns\"] = 1,\n [\"crustacivores\"] = 2,\n [\"crustacivorous\"] = 1,\n [\"cryptic\"] = 1,\n [\"cryptic_plumages\"] = 1,\n [\"cup\"] = 1,\n [\"cups\"] = 1,\n [\"cutellas\"] = 1,\n [\"debeaking\"] = 1,\n [\"definitive_plumages\"] = 1,\n [\"detritivore\"] = 1,\n [\"detritivores\"] = 1,\n [\"detritivorous\"] = 1,\n [\"dewlap\"] = 2,\n [\"dewlaps\"] = 2,\n [\"diet_calls\"] = 1,\n [\"dimorphic\"] = 1,\n [\"dimorphism\"] = 1,\n [\"dispersed_lek\"] = 1,\n [\"dispersed_leks\"] = 1,\n [\"distal_barbules\"] = 1,\n [\"distal_rhynchokinesis\"] = 1,\n [\"distal_umbilicae\"] = 1,\n [\"distal_umbilicus\"] = 1,\n [\"diver\"] = 1,\n [\"dormitories\"] = 1,\n [\"dormitory\"] = 1,\n [\"double-wing_feeding\"] = 1,\n [\"double_wing_feeding\"] = 1,\n [\"down_feather\"] = 1,\n [\"down_feathers\"] = 1,\n [\"downfeather\"] = 1,\n [\"downfeathers\"] = 1,\n [\"duet_call\"] = 1,\n [\"ear-covert\"] = 1,\n [\"ear_covert\"] = 1,\n [\"ear_covert_feather\"] = 1,\n [\"ear_covert_feathers\"] = 1,\n [\"ear_coverts\"] = 1,\n [\"ear_lobe\"] = 1,\n [\"egg_bindings\"] = 1,\n [\"egg_cell\"] = 1,\n [\"egg_cells\"] = 1,\n [\"egg_incubating\"] = 1,\n [\"egg_shell\"] = 1,\n [\"egg_shells\"] = 1,\n [\"egg_teeth\"] = 1,\n [\"egg_white\"] = 1,\n [\"egg_whites\"] = 1,\n [\"eggs\"] = 1,\n [\"eggshell\"] = 1,\n [\"eggshells\"] = 1,\n [\"eggteeth\"] = 1,\n [\"eggtooth\"] = 1,\n [\"elevated_hallux\"] = 1,\n [\"elliptical_wing\"] = 1,\n [\"elliptical_wings\"] = 1,\n [\"emarginations\"] = 1,\n [\"epibranchial\"] = 1,\n [\"er_lobes\"] = 1,\n [\"exploded_lek\"] = 1,\n [\"exploded_leks\"] = 1,\n [\"eye-arc\"] = 1,\n [\"eye-arcs\"] = 1,\n [\"eye-line\"] = 1,\n [\"eye-rings\"] = 1,\n [\"eye-stripe\"] = 1,\n [\"eye_arc\"] = 1,\n [\"eye_arcs\"] = 1,\n [\"eye_brow\"] = 1,\n [\"eye_brows\"] = 1,\n [\"eye_lashes\"] = 1,\n [\"eye_line\"] = 1,\n [\"eye_ring\"] = 1,\n [\"eye_rings\"] = 1,\n [\"eye_stripe\"] = 1,\n [\"eyebrow\"] = 1,\n [\"eyebrows\"] = 1,\n [\"eyelashes\"] = 1,\n [\"eyeline\"] = 1,\n [\"eyering\"] = 1,\n [\"eyerings\"] = 1,\n [\"eyries\"] = 1,\n [\"face_shield\"] = 1,\n [\"face_shields\"] = 1,\n [\"facial_shield\"] = 1,\n [\"facial_shields\"] = 1,\n [\"faecal_sac\"] = 1,\n [\"faecal_sacs\"] = 1,\n [\"faunivore\"] = 1,\n [\"faunivores\"] = 1,\n [\"faunivorous\"] = 1,\n [\"feather-pecking\"] = 1,\n [\"feather-picking\"] = 1,\n [\"feather_comb\"] = 1,\n [\"feather_damaging_behaviour\"] = 1,\n [\"feather_dust\"] = 1,\n [\"feather_flange\"] = 1,\n [\"feather_flanges\"] = 1,\n [\"feather_molt\"] = 1,\n [\"feather_molting\"] = 1,\n [\"feather_moult\"] = 1,\n [\"feather_moulting\"] = 1,\n [\"feather_picking\"] = 1,\n [\"feather_plucking\"] = 1,\n [\"feather_tract\"] = 1,\n [\"feather_tracts\"] = 1,\n [\"feathers\"] = 1,\n [\"fecal_sac\"] = 1,\n [\"fecal_sacs\"] = 1,\n [\"filoplume_feather\"] = 1,\n [\"filoplume_feathers\"] = 1,\n [\"filoplumes\"] = 1,\n [\"first_digit\"] = 1,\n [\"flanges\"] = 1,\n [\"flank\"] = 1,\n [\"fledged\"] = 1,\n [\"fledges\"] = 1,\n [\"fledging\"] = 1,\n [\"fledglings\"] = 1,\n [\"flight_call\"] = 1,\n [\"flight_calls\"] = 1,\n [\"flight_feathers\"] = 1,\n [\"florivore\"] = 1,\n [\"florivores\"] = 1,\n [\"florivorous\"] = 1,\n [\"fly\"] = 1,\n [\"flying\"] = 1,\n [\"foliage_gleaning\"] = 1,\n [\"folivore\"] = 2,\n [\"folivores\"] = 2,\n [\"folivorous\"] = 2,\n [\"food_begging_call\"] = 1,\n [\"food_begging_calls\"] = 1,\n [\"foot_paddling\"] = 1,\n [\"foot_sheath\"] = 1,\n [\"fovea_centralis\"] = 1,\n [\"foveae\"] = 1,\n [\"foveas\"] = 1,\n [\"friction_barbule\"] = 1,\n [\"frontal_plate\"] = 1,\n [\"frontal_plates\"] = 1,\n [\"frontal_shields\"] = 1,\n [\"frugivore\"] = 1,\n [\"frugivores\"] = 1,\n [\"frugivorous\"] = 1,\n [\"furculae\"] = 1,\n [\"gape_flanges\"] = 1,\n [\"gape_rosette\"] = 1,\n [\"gape_rosettes\"] = 1,\n [\"gapes\"] = 1,\n [\"gastric_mill\"] = 1,\n [\"general_feeders\"] = 1,\n [\"gestalt\"] = 1,\n [\"gigerium\"] = 1,\n [\"gizzards\"] = 1,\n [\"glair\"] = 1,\n [\"glaire\"] = 1,\n [\"glean\"] = 1,\n [\"gonydeal-angle\"] = 1,\n [\"gonydeal-angles\"] = 1,\n [\"gonydeal-expansion\"] = 1,\n [\"gonydeal-expansions\"] = 1,\n [\"gonydeal-spot\"] = 1,\n [\"gonydeal-spots\"] = 1,\n [\"gonydeal_angles\"] = 1,\n [\"gonydeal_expansion\"] = 1,\n [\"gonydeal_expansions\"] = 1,\n [\"gonydeal_spots\"] = 1,\n [\"gorgets\"] = 1,\n [\"granivore\"] = 1,\n [\"granivores\"] = 1,\n [\"granivorous\"] = 1,\n [\"greater_covert\"] = 1,\n [\"greater_coverts\"] = 1,\n [\"greater_primary_covert\"] = 1,\n [\"greater_primary_coverts\"] = 1,\n [\"greater_secondary_covert\"] = 1,\n [\"greater_secondary_coverts\"] = 1,\n [\"greater_underwing_covert\"] = 1,\n [\"greater_underwing_coverts\"] = 1,\n [\"greater_underwing_primary_covert\"] = 1,\n [\"greater_underwing_primary_coverts\"] = 1,\n [\"groom\"] = 1,\n [\"gula\"] = 1,\n [\"gular\"] = 2,\n [\"gular_flutter\"] = 1,\n [\"gular_fluttering\"] = 1,\n [\"gular_pant\"] = 1,\n [\"gular_panting\"] = 1,\n [\"gular_pouch\"] = 1,\n [\"gular_pouches\"] = 1,\n [\"gular_sac\"] = 1,\n [\"gular_sacs\"] = 1,\n [\"gulars\"] = 1,\n [\"hanging\"] = 1,\n [\"herbivore\"] = 1,\n [\"herbivores\"] = 1,\n [\"herbivorous\"] = 1,\n [\"heronries\"] = 1,\n [\"heronry\"] = 1,\n [\"high_aspect_ratio_wing\"] = 1,\n [\"high_aspect_ratio_wings\"] = 1,\n [\"high_speed_wing\"] = 1,\n [\"high_speed_wings\"] = 1,\n [\"hind_toe\"] = 1,\n [\"hind_toes\"] = 1,\n [\"hindhead\"] = 1,\n [\"hindneck\"] = 1,\n [\"home-range\"] = 1,\n [\"home-ranges\"] = 1,\n [\"home_ranges\"] = 1,\n [\"homerange\"] = 1,\n [\"homeranges\"] = 1,\n [\"hooklet\"] = 1,\n [\"hooklets\"] = 1,\n [\"hover-gleaning\"] = 1,\n [\"humeral_feather\"] = 1,\n [\"humeral_feathers\"] = 1,\n [\"humeral_region\"] = 1,\n [\"hyoid_apparatuses\"] = 1,\n [\"hypanema\"] = 1,\n [\"hypometabolism\"] = 1,\n [\"hypopteron\"] = 1,\n [\"incubating\"] = 1,\n [\"incubation\"] = 1,\n [\"incumbent\"] = 1,\n [\"incumbent_hallux\"] = 1,\n [\"inferior_umbilicae\"] = 1,\n [\"inner-vane\"] = 1,\n [\"inner-vanes\"] = 1,\n [\"inner_vane\"] = 1,\n [\"inner_vanes\"] = 1,\n [\"inner_wings\"] = 1,\n [\"innerwing\"] = 1,\n [\"innerwings\"] = 1,\n [\"insectivore\"] = 1,\n [\"insectivores\"] = 1,\n [\"insectivorous\"] = 1,\n [\"irises\"] = 1,\n [\"keels\"] = 1,\n [\"kleptoparasite\"] = 1,\n [\"koilin\"] = 1,\n [\"lateral_throat-stripes\"] = 1,\n [\"lateral_throat_stripe\"] = 1,\n [\"lateral_throat_stripes\"] = 1,\n [\"lek_mating\"] = 1,\n [\"lek_matings\"] = 1,\n [\"lek_polygyny\"] = 1,\n [\"lekking\"] = 1,\n [\"leks\"] = 1,\n [\"lesser_covert\"] = 1,\n [\"lesser_coverts\"] = 1,\n [\"lesser_primary_covert\"] = 1,\n [\"lesser_primary_coverts\"] = 1,\n [\"lesser_secondary_covert\"] = 1,\n [\"lesser_secondary_coverts\"] = 1,\n [\"lesser_underwing_covert\"] = 1,\n [\"lesser_underwing_coverts\"] = 1,\n [\"lesser_underwing_primary_covert\"] = 1,\n [\"lesser_underwing_primary_coverts\"] = 1,\n [\"little_remex\"] = 1,\n [\"locking_barbule\"] = 1,\n [\"locking_barbules\"] = 1,\n [\"loreal\"] = 1,\n [\"lores\"] = 1,\n [\"lower-parts\"] = 1,\n [\"lower_back\"] = 1,\n [\"lower_humeral_coverts\"] = 1,\n [\"lower_parts\"] = 1,\n [\"lowerparts\"] = 1,\n [\"main_stem\"] = 1,\n [\"maintenance_behavior\"] = 1,\n [\"maintenance_behaviors\"] = 1,\n [\"maintenance_behaviours\"] = 1,\n [\"malar\"] = 1,\n [\"malar_region\"] = 1,\n [\"malar_stripe\"] = 1,\n [\"malar_stripes\"] = 1,\n [\"malars\"] = 1,\n [\"marginal-coverts\"] = 2,\n [\"marginal_coverts\"] = 1,\n [\"maxilla\"] = 1,\n [\"median\"] = 1,\n [\"median_covert\"] = 1,\n [\"median_coverts\"] = 1,\n [\"median_primary_covert\"] = 2,\n [\"median_primary_coverts\"] = 2,\n [\"median_secondary_covert\"] = 2,\n [\"median_secondary_coverts\"] = 2,\n [\"median_underwing_covert\"] = 1,\n [\"median_underwing_coverts\"] = 1,\n [\"medulla\"] = 1,\n [\"medullae\"] = 1,\n [\"merry-thought\"] = 1,\n [\"merry_thought\"] = 1,\n [\"mesoptile\"] = 1,\n [\"mesoptiles\"] = 1,\n [\"migrations\"] = 1,\n [\"migratory\"] = 1,\n [\"mirror\"] = 1,\n [\"mobbing_call\"] = 1,\n [\"mobbing_calls\"] = 1,\n [\"molt\"] = 1,\n [\"molt_strategies\"] = 1,\n [\"molt_strategy\"] = 1,\n [\"molting\"] = 1,\n [\"molting_strategies\"] = 1,\n [\"molting_strategy\"] = 1,\n [\"moltings\"] = 1,\n [\"molts\"] = 1,\n [\"morphs\"] = 1,\n [\"moult_strategies\"] = 1,\n [\"moulting\"] = 1,\n [\"moulting_strategies\"] = 1,\n [\"moulting_strategy\"] = 1,\n [\"moultings\"] = 1,\n [\"moults\"] = 1,\n [\"mound\"] = 1,\n [\"mounds\"] = 1,\n [\"moustachial-stripe\"] = 1,\n [\"moustachial-stripes\"] = 1,\n [\"moustachial_stripes\"] = 1,\n [\"mustache_stripe\"] = 1,\n [\"mustache_stripes\"] = 1,\n [\"mustachial_stripes\"] = 2,\n [\"nail\"] = 1,\n [\"nail_(beak)\"] = 1,\n [\"nail_(of_beak)\"] = 1,\n [\"nail_of_the_beak\"] = 1,\n [\"nasal_canthi\"] = 1,\n [\"natal-down\"] = 1,\n [\"natal-down_feathers\"] = 1,\n [\"natal_down_feather\"] = 1,\n [\"natal_down_feathers\"] = 1,\n [\"nebbing\"] = 1,\n [\"nectarivore\"] = 1,\n [\"nectarivores\"] = 1,\n [\"nectarivorous\"] = 1,\n [\"neossoptiles\"] = 1,\n [\"nests\"] = 1,\n [\"nictitating\"] = 1,\n [\"nictitating_membranes\"] = 1,\n [\"nodule\"] = 1,\n [\"nodules\"] = 1,\n [\"non-breeding_plumage\"] = 1,\n [\"non-breeding_plumages\"] = 1,\n [\"non-breeding_territory\"] = 1,\n [\"non_breeding_plumage\"] = 1,\n [\"non_breeding_plumages\"] = 1,\n [\"nonbreeding_plumage\"] = 1,\n [\"nonbreeding_plumages\"] = 1,\n [\"nostril\"] = 1,\n [\"nostrils\"] = 1,\n [\"notches\"] = 1,\n [\"nuptial_plumage\"] = 1,\n [\"nuptial_plumages\"] = 1,\n [\"occiput\"] = 1,\n [\"oil_gland\"] = 1,\n [\"oil_glands\"] = 1,\n [\"omnivore\"] = 1,\n [\"omnivores\"] = 1,\n [\"omnivorous\"] = 1,\n [\"oologist\"] = 1,\n [\"opercula\"] = 1,\n [\"orbital-ring\"] = 1,\n [\"orbital-rings\"] = 1,\n [\"orbital_ring\"] = 2,\n [\"orbital_rings\"] = 1,\n [\"outer-vane\"] = 1,\n [\"outer-vanes\"] = 1,\n [\"outer_vane\"] = 1,\n [\"outer_vanes\"] = 1,\n [\"outer_wing\"] = 1,\n [\"outer_wings\"] = 1,\n [\"outerwing\"] = 1,\n [\"outerwings\"] = 1,\n [\"over-brood\"] = 1,\n [\"over-brooding\"] = 1,\n [\"over-broods\"] = 1,\n [\"over_brood\"] = 1,\n [\"over_brooding\"] = 1,\n [\"over_broods\"] = 1,\n [\"overbrood\"] = 1,\n [\"overbrooded\"] = 1,\n [\"overbroods\"] = 1,\n [\"parson\u0026#039;s_nose\"] = 1,\n [\"partial_migration\"] = 1,\n [\"partially_migratory\"] = 1,\n [\"passerines\"] = 1,\n [\"passive_anting\"] = 1,\n [\"pectinate_claws\"] = 1,\n [\"pectoral-tuft\"] = 1,\n [\"pectoral-tufts\"] = 1,\n [\"pectoral_tufts\"] = 1,\n [\"pendant\"] = 1,\n [\"pendants\"] = 1,\n [\"pennaceous\"] = 1,\n [\"pennaceous_feathers\"] = 1,\n [\"pennulum\"] = 1,\n [\"perching_bird\"] = 1,\n [\"perching_birds\"] = 1,\n [\"permanent_resident\"] = 1,\n [\"permanent_residents\"] = 1,\n [\"permanent_territory\"] = 1,\n [\"phaneric\"] = 1,\n [\"phaneric_plumage\"] = 1,\n [\"phaneric_plumages\"] = 1,\n [\"philopatric\"] = 1,\n [\"pileum_of_the_head\"] = 1,\n [\"pin_feathers\"] = 1,\n [\"pinion\"] = 1,\n [\"pinion_joint\"] = 1,\n [\"pinion_joints\"] = 1,\n [\"piscivore\"] = 1,\n [\"piscivores\"] = 1,\n [\"piscivorous\"] = 1,\n [\"plate\"] = 1,\n [\"plates\"] = 1,\n [\"platform\"] = 1,\n [\"platforms\"] = 1,\n [\"plumage_science\"] = 1,\n [\"plumages\"] = 1,\n [\"plumulaceous\"] = 1,\n [\"plumulaceous_feather\"] = 1,\n [\"plumulaceous_feathers\"] = 1,\n [\"plunge-diver\"] = 1,\n [\"plunge-divers\"] = 1,\n [\"plunge_diver\"] = 1,\n [\"plunge_divers\"] = 1,\n [\"plunge_diving\"] = 1,\n [\"pope\u0026#039;s_nose\"] = 1,\n [\"post-juvenal_molt\"] = 1,\n [\"post-juvenal_molts\"] = 1,\n [\"post-juvenal_moult\"] = 1,\n [\"post-juvenal_moults\"] = 1,\n [\"post-nuptial_molt\"] = 1,\n [\"post-nuptial_molts\"] = 1,\n [\"post-nuptial_moult\"] = 1,\n [\"post-nuptial_moults\"] = 1,\n [\"postjuvenal_molt\"] = 1,\n [\"postjuvenal_molts\"] = 1,\n [\"postjuvenal_moult\"] = 1,\n [\"postjuvenal_moults\"] = 1,\n [\"postnuptial_molt\"] = 1,\n [\"postnuptial_molts\"] = 1,\n [\"postnuptial_moult\"] = 1,\n [\"postnuptial_moults\"] = 1,\n [\"postpatagium\"] = 1,\n [\"powder-down\"] = 1,\n [\"powder-down_feather\"] = 1,\n [\"powder-down_feathers\"] = 1,\n [\"powder_down_feather\"] = 1,\n [\"powder_down_feathers\"] = 1,\n [\"pre-alternate_moult\"] = 1,\n [\"pre-alternate_moults\"] = 1,\n [\"pre-basic_molt\"] = 1,\n [\"pre-basic_molts\"] = 1,\n [\"pre-basic_moult\"] = 1,\n [\"pre-basic_moults\"] = 1,\n [\"pre-nuptial_moult\"] = 1,\n [\"pre-nuptial_moults\"] = 1,\n [\"prealternate_moults\"] = 1,\n [\"prebasic_molt\"] = 1,\n [\"prebasic_molts\"] = 1,\n [\"prebasic_moults\"] = 1,\n [\"preen\"] = 1,\n [\"preen_gland\"] = 1,\n [\"preen_glands\"] = 1,\n [\"preens\"] = 1,\n [\"prenuptial_moult\"] = 1,\n [\"prenuptial_moults\"] = 1,\n [\"primary\"] = 1,\n [\"primary_covert\"] = 1,\n [\"primary_coverts\"] = 1,\n [\"primary_extension\"] = 1,\n [\"primary_extensions\"] = 1,\n [\"primary_feather\"] = 1,\n [\"primary_feathers\"] = 1,\n [\"primary_projections\"] = 1,\n [\"primary_quill\"] = 1,\n [\"primary_remex\"] = 1,\n [\"primary_remiges\"] = 1,\n [\"prokinesis\"] = 1,\n [\"protoptile\"] = 1,\n [\"protoptiles\"] = 1,\n [\"proventriculi\"] = 1,\n [\"proximal_barbules\"] = 1,\n [\"proximal_umbilicae\"] = 2,\n [\"pterotillomania\"] = 1,\n [\"pterylya\"] = 2,\n [\"pulli\"] = 1,\n [\"pullus\"] = 1,\n [\"pulviplume\"] = 1,\n [\"pulviplumes\"] = 1,\n [\"pupils\"] = 1,\n [\"pygostylea\"] = 1,\n [\"quill\"] = 1,\n [\"quill_feather\"] = 1,\n [\"quill_feathers\"] = 1,\n [\"quill_knobs\"] = 1,\n [\"quills\"] = 2,\n [\"rachides\"] = 1,\n [\"rachises\"] = 1,\n [\"rami\"] = 1,\n [\"ramus\"] = 1,\n [\"ratite_sterna\"] = 1,\n [\"ratite_sternum\"] = 1,\n [\"rectrice\"] = 1,\n [\"rectrix\"] = 1,\n [\"recumbent_crest\"] = 1,\n [\"recumbent_crests\"] = 1,\n [\"recursive_crest\"] = 1,\n [\"recursive_crests\"] = 1,\n [\"recurved_margin\"] = 1,\n [\"recurved_margins\"] = 1,\n [\"remex\"] = 1,\n [\"remige\"] = 1,\n [\"residents\"] = 1,\n [\"reticulate\"] = 1,\n [\"rhachides\"] = 1,\n [\"rhachis\"] = 1,\n [\"rhachises\"] = 1,\n [\"rictal_bristle\"] = 1,\n [\"rictal_bristle_feather\"] = 1,\n [\"rictal_bristle_feathers\"] = 1,\n [\"rictal_wattle\"] = 1,\n [\"rictal_wattles\"] = 1,\n [\"ringing\"] = 1,\n [\"rookeries\"] = 1,\n [\"rookery\"] = 1,\n [\"roost\"] = 1,\n [\"roosts\"] = 1,\n [\"rosettes\"] = 1,\n [\"rostrum\"] = 1,\n [\"rumps\"] = 1,\n [\"sanguinivore\"] = 1,\n [\"sanguinivores\"] = 1,\n [\"sanguinivorous\"] = 1,\n [\"saprovore\"] = 1,\n [\"saprovores\"] = 1,\n [\"saprovorous\"] = 1,\n [\"saucer\"] = 1,\n [\"saucers\"] = 1,\n [\"scale\"] = 1,\n [\"scapula\"] = 1,\n [\"scapular\"] = 1,\n [\"scapus\"] = 1,\n [\"scrape\"] = 1,\n [\"scrapes\"] = 1,\n [\"scute\"] = 1,\n [\"scutella\"] = 1,\n [\"scutellae\"] = 1,\n [\"scutellate\"] = 1,\n [\"scutes\"] = 1,\n [\"seabird_colonies\"] = 1,\n [\"seabird_colony\"] = 1,\n [\"seasonal_migration\"] = 1,\n [\"seasonal_migrations\"] = 1,\n [\"secondary_covert\"] = 1,\n [\"secondary_coverts\"] = 1,\n [\"secondary_feather\"] = 1,\n [\"secondary_feathers\"] = 1,\n [\"secondary_remex\"] = 1,\n [\"secondary_remiges\"] = 1,\n [\"sedentary\"] = 1,\n [\"semi-altricial\"] = 1,\n [\"semi-plume\"] = 1,\n [\"semi-plume_feather\"] = 1,\n [\"semi-plume_feathers\"] = 1,\n [\"semi-plumes\"] = 1,\n [\"semi-precocial\"] = 1,\n [\"semi_altricial\"] = 1,\n [\"semi_plume\"] = 1,\n [\"semi_plume_feather\"] = 1,\n [\"semi_plume_feathers\"] = 1,\n [\"semi_plumes\"] = 1,\n [\"semi_precocial\"] = 1,\n [\"semialtricial\"] = 1,\n [\"semiplume_feather\"] = 1,\n [\"semiplume_feathers\"] = 1,\n [\"semiplumes\"] = 1,\n [\"semiprecocial\"] = 1,\n [\"sexually_dimorphic\"] = 1,\n [\"shaft\"] = 1,\n [\"shafts\"] = 1,\n [\"simple_alternate_strategy\"] = 1,\n [\"simple_basic_strategy\"] = 1,\n [\"soaring_wing\"] = 1,\n [\"soaring_wings\"] = 1,\n [\"songs\"] = 1,\n [\"speculum_feather\"] = 1,\n [\"speculum_feathers\"] = 1,\n [\"sphere\"] = 1,\n [\"spheres\"] = 1,\n [\"spurs\"] = 1,\n [\"statant\"] = 1,\n [\"statant_cup\"] = 1,\n [\"sterna\"] = 1,\n [\"sternum\"] = 1,\n [\"submoustachial-stripe\"] = 1,\n [\"submoustachial-stripes\"] = 1,\n [\"submoustachial_stripes\"] = 1,\n [\"sultan\u0026#039;s_nose\"] = 1,\n [\"supercilia\"] = 1,\n [\"superciliary_line\"] = 1,\n [\"superciliary_lines\"] = 1,\n [\"superior_umbilicae\"] = 1,\n [\"supplementary_plumage\"] = 1,\n [\"supplementary_plumages\"] = 1,\n [\"supraloral-stripe\"] = 1,\n [\"supraloral-stripes\"] = 1,\n [\"supraloral_stripe\"] = 1,\n [\"supraloral_stripes\"] = 1,\n [\"supralorals\"] = 1,\n [\"surface-diver\"] = 1,\n [\"surface-divers\"] = 1,\n [\"surface_diver\"] = 1,\n [\"surface_divers\"] = 1,\n [\"surface_diving\"] = 1,\n [\"tail-streamer\"] = 1,\n [\"tail-streamers\"] = 1,\n [\"tail_bone\"] = 1,\n [\"tail_bones\"] = 1,\n [\"tail_streamer\"] = 1,\n [\"tailbone\"] = 1,\n [\"tailkbones\"] = 1,\n [\"tails\"] = 1,\n [\"talons\"] = 1,\n [\"tarsi\"] = 1,\n [\"tarsometatarsus\"] = 1,\n [\"tectrice\"] = 1,\n [\"tectrices\"] = 1,\n [\"tectrix\"] = 1,\n [\"teeth\"] = 1,\n [\"teleoptile\"] = 1,\n [\"temporal_canthi\"] = 1,\n [\"temporal_fovea\"] = 1,\n [\"temporary_territory\"] = 1,\n [\"territories\"] = 1,\n [\"territory\"] = 1,\n [\"tertials\"] = 1,\n [\"tertiary\"] = 1,\n [\"tertiary_feather\"] = 1,\n [\"third_eyelid\"] = 1,\n [\"throat_sac\"] = 1,\n [\"thumb\"] = 1,\n [\"thumbs\"] = 1,\n [\"tibiae\"] = 1,\n [\"tibias\"] = 1,\n [\"tomium\"] = 1,\n [\"tongue_bone\"] = 1,\n [\"torpors\"] = 1,\n [\"tract\"] = 1,\n [\"tracts\"] = 1,\n [\"under-parts\"] = 1,\n [\"under-tail-covert\"] = 1,\n [\"under-tail-coverts\"] = 1,\n [\"under-tail_covert\"] = 1,\n [\"under-tail_coverts\"] = 1,\n [\"under-wing\"] = 1,\n [\"under-wings\"] = 1,\n [\"under_arm\"] = 1,\n [\"under_tail-covert\"] = 1,\n [\"under_tail-coverts\"] = 1,\n [\"under_tail_covert\"] = 1,\n [\"under_tail_coverts\"] = 1,\n [\"under_wing\"] = 1,\n [\"under_wings\"] = 1,\n [\"underarm\"] = 1,\n [\"underarms\"] = 1,\n [\"underparts\"] = 1,\n [\"undertail-covert\"] = 1,\n [\"undertail-coverts\"] = 1,\n [\"undertail_covert\"] = 1,\n [\"underwing_covert\"] = 1,\n [\"underwing_coverts\"] = 1,\n [\"underwings\"] = 1,\n [\"upper-parts\"] = 1,\n [\"upper-tail-covert\"] = 1,\n [\"upper-tail-coverts\"] = 1,\n [\"upper-tail_covert\"] = 1,\n [\"upper-tail_coverts\"] = 1,\n [\"upper-wing\"] = 1,\n [\"upper-wings\"] = 1,\n [\"upper_mandibles\"] = 1,\n [\"upper_maxilla\"] = 1,\n [\"upper_tail-covert\"] = 1,\n [\"upper_tail-coverts\"] = 1,\n [\"upper_tail_covert\"] = 1,\n [\"upper_tail_coverts\"] = 1,\n [\"upper_wing\"] = 1,\n [\"upper_wings\"] = 1,\n [\"upperparts\"] = 1,\n [\"uppertail-covert\"] = 1,\n [\"uppertail-coverts\"] = 1,\n [\"uppertail_covert\"] = 1,\n [\"upperwing_covert\"] = 1,\n [\"upperwing_coverts\"] = 1,\n [\"upperwings\"] = 1,\n [\"urohyal\"] = 1,\n [\"uropygial\"] = 1,\n [\"uropygial_glands\"] = 1,\n [\"uropygial_region\"] = 1,\n [\"uropygium\"] = 1,\n [\"vaned_feathers\"] = 1,\n [\"vanes\"] = 1,\n [\"vaxillum\"] = 1,\n [\"ventriculae\"] = 1,\n [\"ventriculus\"] = 1,\n [\"vents\"] = 1,\n [\"vexilla\"] = 1,\n [\"vexillum\"] = 1,\n [\"wattles\"] = 1,\n [\"wind_egg\"] = 1,\n [\"wind_eggs\"] = 1,\n [\"wing\"] = 1,\n [\"wing-bar\"] = 1,\n [\"wing-bars\"] = 1,\n [\"wing-covert\"] = 1,\n [\"wing-coverts\"] = 1,\n [\"wing-lining\"] = 1,\n [\"wing-linings\"] = 1,\n [\"wing_bars\"] = 1,\n [\"wing_covert\"] = 1,\n [\"wing_formulae\"] = 1,\n [\"wing_linings\"] = 1,\n [\"wing_molt\"] = 1,\n [\"wing_molts\"] = 1,\n [\"wing_moult\"] = 1,\n [\"wing_moults\"] = 1,\n [\"wing_span\"] = 1,\n [\"wing_spans\"] = 1,\n [\"wing_trimming\"] = 1,\n [\"wingbar\"] = 1,\n [\"wingbars\"] = 1,\n [\"winglining\"] = 1,\n [\"winglinings\"] = 1,\n [\"wingspans\"] = 1,\n [\"winter\"] = 1,\n [\"winter_plumage\"] = 1,\n [\"winter_plumages\"] = 1,\n [\"winters\"] = 1,\n [\"wish-bone\"] = 1,\n [\"wish-bones\"] = 1,\n [\"wishbone\"] = 1,\n [\"wishbones\"] = 1,\n [\"yolk\"] = 1,\n [\"yolks\"] = 1,\n}\ntemplate_list = table#1 {\n [\"Anchor\"] = 193,\n [\"Aut\"] = 1,\n [\"Birds\"] = 1,\n [\"Birdsong\"] = 2,\n [\"Cite EB1911\"] = 1,\n [\"Cite OED\"] = 6,\n [\"Cite book\"] = 185,\n [\"Cite episode\"] = 1,\n [\"Cite journal\"] = 3,\n [\"Cite magazine\"] = 112,\n [\"Cite news\"] = 1,\n [\"Cite podcast\"] = 1,\n [\"Cite web\"] = 30,\n [\"Compact TOC\"] = 24,\n [\"Convert\"] = 14,\n [\"Dead link\"] = 3,\n [\"Defn\"] = 242,\n [\"Efn\"] = 4,\n [\"Featured list\"] = 1,\n [\"Further\"] = 1,\n [\"Gallery\"] = 1,\n [\"Gli\"] = 626,\n [\"Glossary\"] = 24,\n [\"Glossary end\"] = 24,\n [\"Harvid\"] = 3,\n [\"Harvnb\"] = 135,\n [\"Horizontal TOC\"] = 1,\n [\"In lang\"] = 1,\n [\"Langx\"] = 1,\n [\"Legend2\"] = 3,\n [\"Main\"] = 73,\n [\"Notelist\"] = 1,\n [\"Nowrap\"] = 6,\n [\"Ordered list\"] = 1,\n [\"Reflist\"] = 1,\n [\"See also\"] = 1,\n [\"Sfn\"] = 8,\n [\"Short description\"] = 1,\n [\"Term\"] = 242,\n [\"Webarchive\"] = 3,\n}\narticle_whitelist = table#1 {\n}\n","limitreport-profile":[["?","620","18.2"],["dataWrapper \u003Cmw.lua:672\u003E","520","15.3"],["recursiveClone 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