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class="vector-toc-numb">2</span> <span>Descrizione</span> </div> </a> <ul id="toc-Descrizione-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Distribuzione_e_habitat" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Distribuzione_e_habitat"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Distribuzione e habitat</span> </div> </a> <ul id="toc-Distribuzione_e_habitat-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Biologia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Biologia"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Biologia</span> </div> </a> <button aria-controls="toc-Biologia-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Attiva/disattiva la sottosezione Biologia</span> </button> <ul id="toc-Biologia-sublist" class="vector-toc-list"> <li id="toc-Alimentazione" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Alimentazione"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.1</span> <span>Alimentazione</span> </div> </a> <ul id="toc-Alimentazione-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Riproduzione" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Riproduzione"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.2</span> <span>Riproduzione</span> </div> </a> <ul id="toc-Riproduzione-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nemici" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nemici"> <div class="vector-toc-text"> <span class="vector-toc-numb">4.3</span> <span>Nemici</span> </div> </a> <ul id="toc-Nemici-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Conservazione" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Conservazione"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Conservazione</span> </div> </a> <ul id="toc-Conservazione-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Note" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Note"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Note</span> </div> </a> <ul id="toc-Note-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altri_progetti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Altri_progetti"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Altri progetti</span> </div> </a> <ul id="toc-Altri_progetti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Collegamenti_esterni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Collegamenti_esterni"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Collegamenti esterni</span> </div> </a> <ul id="toc-Collegamenti_esterni-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Indice" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Mostra/Nascondi l'indice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Mostra/Nascondi l'indice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Tamiasciurus hudsonicus</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vai a una voce in un'altra lingua. Disponibile in 31 lingue" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-31" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">31 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B3%D9%86%D8%AC%D8%A7%D8%A8_%D8%A3%D8%AD%D9%85%D8%B1_%D8%A3%D9%85%D8%B1%D9%8A%D9%83%D9%8A" title="سنجاب أحمر أمريكي - arabo" lang="ar" hreflang="ar" data-title="سنجاب أحمر أمريكي" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%B3%D9%86%D8%AC%D8%A7%D8%A8_%D8%A7%D8%AD%D9%85%D8%B1_%D8%A7%D9%85%D8%B1%D9%8A%D9%83%D9%89" title="سنجاب احمر امريكى - arabo egiziano" lang="arz" hreflang="arz" data-title="سنجاب احمر امريكى" data-language-autonym="مصرى" data-language-local-name="arabo egiziano" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-avk mw-list-item"><a href="https://avk.wikipedia.org/wiki/Werpol_(Tamiasciurus_hudsonicus)" title="Werpol (Tamiasciurus hudsonicus) - kotava" lang="avk" hreflang="avk" data-title="Werpol (Tamiasciurus hudsonicus)" data-language-autonym="Kotava" data-language-local-name="kotava" class="interlanguage-link-target"><span>Kotava</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%90%D0%BC%D0%B5%D1%80%D0%B8%D0%BA%D0%B0%D0%BD%D1%81%D0%BA%D0%B0_%D1%87%D0%B5%D1%80%D0%B2%D0%B5%D0%BD%D0%B0_%D0%BA%D0%B0%D1%82%D0%B5%D1%80%D0%B8%D1%86%D0%B0" title="Американска червена катерица - bulgaro" lang="bg" hreflang="bg" data-title="Американска червена катерица" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Gwi%C3%B1ver_rous_Norzhamerika" title="Gwiñver rous Norzhamerika - bretone" lang="br" hreflang="br" data-title="Gwiñver rous Norzhamerika" data-language-autonym="Brezhoneg" data-language-local-name="bretone" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Esquirol_vermell_americ%C3%A0" title="Esquirol vermell americà - catalano" lang="ca" hreflang="ca" data-title="Esquirol vermell americà" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Tamiasciurus_hudsonicus" title="Tamiasciurus hudsonicus - cebuano" lang="ceb" hreflang="ceb" data-title="Tamiasciurus hudsonicus" data-language-autonym="Cebuano" data-language-local-name="cebuano" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/%C4%8Cikar%C3%AD_%C4%8Derven%C3%BD" title="Čikarí červený - ceco" lang="cs" hreflang="cs" data-title="Čikarí červený" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Gemeines_Roth%C3%B6rnchen" title="Gemeines Rothörnchen - tedesco" lang="de" hreflang="de" data-title="Gemeines Rothörnchen" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/American_red_squirrel" title="American red squirrel - inglese" lang="en" hreflang="en" data-title="American red squirrel" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Tamiasciurus_hudsonicus" title="Tamiasciurus hudsonicus - spagnolo" lang="es" hreflang="es" data-title="Tamiasciurus hudsonicus" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Tamiasciurus_hudsonicus" title="Tamiasciurus hudsonicus - basco" lang="eu" hreflang="eu" data-title="Tamiasciurus hudsonicus" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%D9%86%D8%AC%D8%A7%D8%A8_%D9%82%D8%B1%D9%85%D8%B2_%D8%A2%D9%85%D8%B1%DB%8C%DA%A9%D8%A7%DB%8C%DB%8C" title="سنجاب قرمز آمریکایی - persiano" lang="fa" hreflang="fa" data-title="سنجاب قرمز آمریکایی" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi badge-Q17559452 badge-recommendedarticle mw-list-item" title="voce consigliata"><a href="https://fi.wikipedia.org/wiki/Punaorava" title="Punaorava - finlandese" lang="fi" hreflang="fi" data-title="Punaorava" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/%C3%89cureuil_roux_(Am%C3%A9rique_du_Nord)" title="Écureuil roux (Amérique du Nord) - francese" lang="fr" hreflang="fr" data-title="Écureuil roux (Amérique du Nord)" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Amerikaansk_read_iikhoarntsje" title="Amerikaansk read iikhoarntsje - frisone occidentale" lang="fy" hreflang="fy" data-title="Amerikaansk read iikhoarntsje" data-language-autonym="Frysk" data-language-local-name="frisone occidentale" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A1%D7%A0%D7%90%D7%99_%D7%90%D7%93%D7%95%D7%9D_%D7%90%D7%9E%D7%A8%D7%99%D7%A7%D7%A0%D7%99" title="סנאי אדום אמריקני - ebraico" lang="he" hreflang="he" data-title="סנאי אדום אמריקני" data-language-autonym="עברית" data-language-local-name="ebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Kanadai_v%C3%B6r%C3%B6sm%C3%B3kus" title="Kanadai vörösmókus - ungherese" lang="hu" hreflang="hu" data-title="Kanadai vörösmókus" data-language-autonym="Magyar" data-language-local-name="ungherese" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D2%9A%D1%8B%D0%B7%D1%8B%D0%BB_%D1%82%D0%B8%D1%96%D0%BD" title="Қызыл тиін - kazako" lang="kk" hreflang="kk" data-title="Қызыл тиін" data-language-autonym="Қазақша" data-language-local-name="kazako" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%95%84%EB%A9%94%EB%A6%AC%EC%B9%B4%EB%B6%89%EC%9D%80%EB%8B%A4%EB%9E%8C%EC%A5%90%EC%B2%AD%EC%84%9C" title="아메리카붉은다람쥐청서 - coreano" lang="ko" hreflang="ko" data-title="아메리카붉은다람쥐청서" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Amerikaanse_rode_eekhoorn" title="Amerikaanse rode eekhoorn - olandese" lang="nl" hreflang="nl" data-title="Amerikaanse rode eekhoorn" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nv mw-list-item"><a href="https://nv.wikipedia.org/wiki/Dlozi%C5%82gaii_%C3%ADiyis%C3%ADg%C3%AD%C3%AD" title="Dloziłgaii íiyisígíí - navajo" lang="nv" hreflang="nv" data-title="Dloziłgaii íiyisígíí" data-language-autonym="Diné bizaad" data-language-local-name="navajo" class="interlanguage-link-target"><span>Diné bizaad</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Sosnowi%C3%B3rka_czerwona" title="Sosnowiórka czerwona - polacco" lang="pl" hreflang="pl" data-title="Sosnowiórka czerwona" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Tamiasciurus_hudsonicus" title="Tamiasciurus hudsonicus - portoghese" lang="pt" hreflang="pt" data-title="Tamiasciurus hudsonicus" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9A%D1%80%D0%B0%D1%81%D0%BD%D0%B0%D1%8F_%D0%B1%D0%B5%D0%BB%D0%BA%D0%B0" title="Красная белка - russo" lang="ru" hreflang="ru" data-title="Красная белка" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Amerikansk_r%C3%B6d_ekorre" title="Amerikansk röd ekorre - svedese" lang="sv" hreflang="sv" data-title="Amerikansk röd ekorre" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Tamiasciurus_hudsonicus" title="Tamiasciurus hudsonicus - turco" lang="tr" hreflang="tr" data-title="Tamiasciurus hudsonicus" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/Tamiasciurus_hudsonicus" title="Tamiasciurus hudsonicus - ucraino" lang="uk" hreflang="uk" data-title="Tamiasciurus hudsonicus" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Tamiasciurus_hudsonicus" title="Tamiasciurus hudsonicus - vietnamita" lang="vi" hreflang="vi" data-title="Tamiasciurus hudsonicus" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Tamiasciurus_hudsonicus" title="Tamiasciurus hudsonicus - waray" lang="war" hreflang="war" data-title="Tamiasciurus hudsonicus" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%8C%97%E7%BE%8E%E7%B4%85%E6%9D%BE%E9%BC%A0" title="北美紅松鼠 - cinese" lang="zh" hreflang="zh" data-title="北美紅松鼠" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q326976#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica collegamenti</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespace"> <div id="p-associated-pages" 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noresize" typeof="mw:File"><span title="Come leggere il tassobox"><img alt="Come leggere il tassobox" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Information-silk.svg/16px-Information-silk.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Information-silk.svg/24px-Information-silk.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/51/Information-silk.svg/32px-Information-silk.svg.png 2x" data-file-width="16" data-file-height="16" usemap="#ImageMap_37fb70b5d7ceee19" /></span><map name="ImageMap_37fb70b5d7ceee19"><area href="/wiki/Progetto:Forme_di_vita/Come_leggere_il_tassobox" shape="rect" coords="0,0,50,50" alt="Progetto:Forme di vita/Come leggere il tassobox" title="Progetto:Forme di vita/Come leggere il tassobox" /></map><figcaption>Come leggere il tassobox</figcaption></figure></div>Scoiattolo rosso<sup id="cite_ref-MSW3_1-0" class="reference"><a href="#cite_note-MSW3-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> nordamericano</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><figure class="mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/File:Tamiasciurus_hudsonicus_CT.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Tamiasciurus_hudsonicus_CT.jpg/220px-Tamiasciurus_hudsonicus_CT.jpg" decoding="async" width="220" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Tamiasciurus_hudsonicus_CT.jpg/330px-Tamiasciurus_hudsonicus_CT.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Tamiasciurus_hudsonicus_CT.jpg/440px-Tamiasciurus_hudsonicus_CT.jpg 2x" data-file-width="2720" data-file-height="2068" /></a><figcaption></figcaption></figure></td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color: pink; color: black;"><a href="/wiki/Stato_di_conservazione_(biologia)" title="Stato di conservazione (biologia)">Stato di conservazione</a></th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><div style="margin:0 auto; text-align:center;background:white;" class="skin-invert itwiki-preserve-color"><div><span typeof="mw:File"><a href="/wiki/File:Status_iucn3.1_LC_it.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/32/Status_iucn3.1_LC_it.svg/200px-Status_iucn3.1_LC_it.svg.png" decoding="async" width="200" height="53" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/32/Status_iucn3.1_LC_it.svg/300px-Status_iucn3.1_LC_it.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/32/Status_iucn3.1_LC_it.svg/400px-Status_iucn3.1_LC_it.svg.png 2x" data-file-width="240" data-file-height="64" /></a></span></div><div style="color:teal;font-weight:bold;">Rischio minimo<span style="font-size:80%"><sup id="cite_ref-IUCN_2-0" class="reference"><a href="#cite_note-IUCN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></span></div></div> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color: pink; color: black;"><a href="/wiki/Classificazione_scientifica" title="Classificazione scientifica">Classificazione scientifica</a></th></tr><tr><th style="font-weight:normal"><a href="/wiki/Dominio_(biologia)" title="Dominio (biologia)">Dominio</a></th><td><a href="/wiki/Eukaryota" title="Eukaryota">Eukaryota</a> </td></tr><tr><th style="font-weight:normal; width:50%"><a href="/wiki/Regno_(biologia)" title="Regno (biologia)">Regno</a></th><td><a href="/wiki/Animalia" title="Animalia">Animalia</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Phylum" title="Phylum">Phylum</a></th><td><a href="/wiki/Chordata" title="Chordata">Chordata</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Classe_(tassonomia)" title="Classe (tassonomia)">Classe</a></th><td><a href="/wiki/Mammalia" title="Mammalia">Mammalia</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Ordine_(tassonomia)" title="Ordine (tassonomia)">Ordine</a></th><td><a href="/wiki/Rodentia" title="Rodentia">Rodentia</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Sottordine" title="Sottordine">Sottordine</a></th><td><a href="/wiki/Sciuromorpha" title="Sciuromorpha">Sciuromorpha</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Famiglia_(tassonomia)" title="Famiglia (tassonomia)">Famiglia</a></th><td><a href="/wiki/Sciuridae" title="Sciuridae">Sciuridae</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Sottofamiglia" title="Sottofamiglia">Sottofamiglia</a></th><td><a href="/wiki/Sciurinae" title="Sciurinae">Sciurinae</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Trib%C3%B9_(tassonomia)" title="Tribù (tassonomia)">Tribù</a></th><td><a href="/wiki/Sciurini" title="Sciurini">Sciurini</a> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Genere_(tassonomia)" title="Genere (tassonomia)">Genere</a></th><td><i><b><a href="/wiki/Tamiasciurus" title="Tamiasciurus">Tamiasciurus</a></b></i> </td></tr><tr><th style="font-weight:normal"><a href="/wiki/Specie" title="Specie">Specie</a></th><td><i><b>T. hudsonicus</b></i> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color: pink; color: black;"><a href="/wiki/Nomenclatura_binomiale" title="Nomenclatura binomiale">Nomenclatura binomiale</a></th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><i><b>Tamiasciurus hudsonicus</b></i><br /><span style="font-variant: small-caps">(<a href="/wiki/Johann_Christian_Polycarp_Erxleben" title="Johann Christian Polycarp Erxleben">Erxleben</a>, <a href="/wiki/1777" title="1777">1777</a>)</span> </td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Red_squirrel_with_nut.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Red_squirrel_with_nut.jpg/220px-Red_squirrel_with_nut.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Red_squirrel_with_nut.jpg/330px-Red_squirrel_with_nut.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Red_squirrel_with_nut.jpg/440px-Red_squirrel_with_nut.jpg 2x" data-file-width="1600" data-file-height="1200" /></a><figcaption>Scoiattolo rosso che mangia una noce.</figcaption></figure> <p>Lo <b>scoiattolo rosso nordamericano</b> (<i><b>Tamiasciurus hudsonicus</b></i> <span style="font-variant: small-caps"><a href="/wiki/Johann_Christian_Polycarp_Erxleben" title="Johann Christian Polycarp Erxleben">Erxleben</a>, 1777</span>) è una specie di <a href="/wiki/Sciuridae" title="Sciuridae">scoiattolo</a> <a href="/wiki/Arboricolo" title="Arboricolo">arboricolo</a> del genere <i><a href="/wiki/Tamiasciurus" title="Tamiasciurus">Tamiasciurus</a></i> originaria del <a href="/wiki/Nordamerica" class="mw-redirect" title="Nordamerica">Nordamerica</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Tassonomia">Tassonomia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=1" title="Modifica la sezione Tassonomia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=1" title="Edit section's source code: Tassonomia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Attualmente, gli studiosi riconoscono 24 <a href="/wiki/Sottospecie" title="Sottospecie">sottospecie</a> di scoiattolo rosso americano<sup id="cite_ref-Steele_3-0" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-UoA_4-0" class="reference"><a href="#cite_note-UoA-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Hafner_5-0" class="reference"><a href="#cite_note-Hafner-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>: </p> <ul><li><i>T. h. hudsonicus</i> <span style="font-variant: small-caps">Erxleben, 1777</span> (<a href="/wiki/Ontario" title="Ontario">Ontario</a>);</li> <li><i>T. h. abieticola</i> <span style="font-variant: small-caps">A. H. Howell, 1929</span> (<a href="/wiki/Virginia" title="Virginia">Virginia</a> e <a href="/wiki/Carolina_del_Nord" title="Carolina del Nord">Carolina del Nord</a>);</li> <li><i>T. h. baileyi</i> <span style="font-variant: small-caps">J. A. Allen, 1898</span> (<a href="/wiki/Alaska" title="Alaska">Alaska</a>);</li> <li><i>T. h. dakotensis</i> <span style="font-variant: small-caps">J. A. Allen, 1894</span> (<a href="/wiki/Wyoming" title="Wyoming">Wyoming</a> e <a href="/wiki/Dakota_del_Sud" title="Dakota del Sud">Dakota del Sud</a>);</li> <li><i>T. h. dixiensis</i> <span style="font-variant: small-caps">Hardy, 1942</span> (<a href="/wiki/Utah" title="Utah">Utah</a>);</li> <li><i>T. h. fremonti</i> <span style="font-variant: small-caps">Audubon e Bachman, 1853</span> (<a href="/wiki/Colorado" title="Colorado">Colorado</a> centrale e <a href="/wiki/Utah" title="Utah">Utah</a>);</li> <li><i>T. h. grahamensis</i> <span style="font-variant: small-caps">J. A. Allen, 1894</span> (<a href="/wiki/Arizona" title="Arizona">Arizona</a> e <a href="/wiki/Nuovo_Messico" title="Nuovo Messico">Nuovo Messico</a>);</li> <li><i>T. h. gymnicus</i> <span style="font-variant: small-caps">Bangs, 1899</span> (<a href="/wiki/Nuovo_Brunswick" title="Nuovo Brunswick">Nuovo Brunswick</a> e <a href="/wiki/Maine" title="Maine">Maine</a>);</li> <li><i>T. h. kenaiensis</i> <span style="font-variant: small-caps">A. H. Howell, 1936</span> (<a href="/wiki/Alaska" title="Alaska">Alaska</a>);</li> <li><i>T. h. lanuginosus</i> <span style="font-variant: small-caps">Bachman, 1839</span> (<a href="/wiki/Vancouver" title="Vancouver">Vancouver</a> e <a href="/wiki/Columbia_Britannica" title="Columbia Britannica">Columbia Britannica</a>);</li> <li><i>T. h. laurentianus</i> <span style="font-variant: small-caps">Anderson, 1942</span> (<a href="/wiki/Golfo_di_San_Lorenzo" title="Golfo di San Lorenzo">Golfo di San Lorenzo</a>, <a href="/wiki/Qu%C3%A9bec_(provincia)" title="Québec (provincia)">Québec</a>);</li> <li><i>T. h. loquax</i> <span style="font-variant: small-caps">Bangs, 1896</span> (<a href="/wiki/Stati_Uniti_d%27America" title="Stati Uniti d'America">Stati Uniti</a> orientali, dall'<a href="/wiki/Illinois" title="Illinois">Illinois</a> all'<a href="/wiki/Oceano_Atlantico" title="Oceano Atlantico">Atlantico</a>);</li> <li><i>T. h. lychnuchus</i> <span style="font-variant: small-caps">Stone e Rehn, 1903</span> (<a href="/wiki/Nuovo_Messico" title="Nuovo Messico">Nuovo Messico</a>);</li> <li><i>T. h. minnesota</i> <span style="font-variant: small-caps">J. A. Allen, 1899</span> (<a href="/wiki/Minnesota" title="Minnesota">Minnesota</a>);</li> <li><i>T. h. mogollonensis</i> <span style="font-variant: small-caps">J. A. Allen, 1899</span> (<a href="/wiki/Nuovo_Messico" title="Nuovo Messico">Nuovo Messico</a> e <a href="/wiki/Arizona" title="Arizona">Arizona</a>);</li> <li><i>T. h. pallescens</i> <span style="font-variant: small-caps">A. H. Howell, 1942</span> (<a href="/wiki/Dakota_del_Nord" title="Dakota del Nord">Dakota del Nord</a> e <a href="/wiki/Manitoba" title="Manitoba">Manitoba</a>);</li> <li><i>T. h. petulans</i> <span style="font-variant: small-caps">Osgood, 1900</span> (<a href="/wiki/Alaska" title="Alaska">Alaska</a>);</li> <li><i>T. h. picatus</i> <span style="font-variant: small-caps">Swarth, 1921</span> (<a href="/wiki/Kupreanof_Island" title="Kupreanof Island">Kupreanof Island</a>, Alaska);</li> <li><i>T. h. preblei</i> <span style="font-variant: small-caps">A. H. Howell, 1936</span> (<a href="/wiki/Columbia_Britannica" title="Columbia Britannica">Columbia Britannica</a> e <a href="/wiki/Territori_del_Nord-Ovest" title="Territori del Nord-Ovest">Territori del Nord-Ovest</a>);</li> <li><i>T. h. regalis</i> <span style="font-variant: small-caps">A. H. Howell, 1936</span> (Isle Royale, <a href="/wiki/Michigan" title="Michigan">Michigan</a>);</li> <li><i>T. h. richardsoni</i> <span style="font-variant: small-caps">A. H. Howell, 1936</span> (<a href="/wiki/Columbia_Britannica" title="Columbia Britannica">Columbia Britannica</a> e <a href="/wiki/Idaho" title="Idaho">Idaho</a>);</li> <li><i>T. h. streatori</i> <span style="font-variant: small-caps">J. A. Allen, 1898</span> (<a href="/wiki/Columbia_Britannica" title="Columbia Britannica">Columbia Britannica</a>);</li> <li><i>T. h. ungavensis</i> <span style="font-variant: small-caps">Anderson, 1942</span> (<a href="/wiki/Penisola_di_Ungava" title="Penisola di Ungava">penisola di Ungava</a>);</li> <li><i>T. h. ventorum</i> <span style="font-variant: small-caps">J. A. Allen, 1898</span> (<a href="/wiki/Wyoming" title="Wyoming">Wyoming</a>).</li></ul> <div class="mw-heading mw-heading2"><h2 id="Descrizione">Descrizione</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=2" title="Modifica la sezione Descrizione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=2" title="Edit section's source code: Descrizione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Lo scoiattolo rosso è noto per il grido di richiamo che emette ogni qualvolta è disturbato: un acuto e prolungato <i>ciurr-ciurr</i>. La lunghezza della testa e del corpo insieme varia da 16,5 a 23 cm ed è dunque 2/3 delle dimensioni dello scoiattolo grigio orientale (<i><a href="/wiki/Sciurus_carolinensis" title="Sciurus carolinensis">Sciurus carolinensis</a></i>)<sup id="cite_ref-Steele_3-1" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-UoA_4-1" class="reference"><a href="#cite_note-UoA-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>. Il mantello varia dal bruno-fulvo al brunastro con una striscia rossastra che, partendo dalle orecchie, arriva fino alla punta della <a href="/wiki/Coda_(anatomia)" class="mw-redirect" title="Coda (anatomia)">coda</a>, e una linea nerastra lungo i fianchi; gli occhi sono cerchiati di bianco<sup id="cite_ref-Steele_3-2" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-UoA_4-2" class="reference"><a href="#cite_note-UoA-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Nowak_6-0" class="reference"><a href="#cite_note-Nowak-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Feldhamer_7-0" class="reference"><a href="#cite_note-Feldhamer-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>. La coda è rivestita di <a href="/wiki/Pelo" title="Pelo">peli</a> gialli oppure bianchi, mentre le parti ventrali sono bianche<sup id="cite_ref-Steele_3-3" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-UoA_4-3" class="reference"><a href="#cite_note-UoA-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Feldhamer_7-1" class="reference"><a href="#cite_note-Feldhamer-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>. D'<a href="/wiki/Inverno" title="Inverno">inverno</a>, il colore del mantello sbiadisce e la linea nera laterale, già assente negli individui giovani, sparisce, mentre le orecchie vengono protette da piccoli ciuffi di peli neri e rossastri<sup id="cite_ref-Steele_3-4" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Feldhamer_7-2" class="reference"><a href="#cite_note-Feldhamer-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>. Una specie molto simile, lo scoiattolo di Douglas (<i><a href="/wiki/Tamiasciurus_douglasii" title="Tamiasciurus douglasii">Tamiasciurus douglasii</a></i>), si differenzia dallo scoiattolo rosso per la sfumatura color ruggine delle regioni ventrali<sup id="cite_ref-Steele_3-5" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-UoA_4-4" class="reference"><a href="#cite_note-UoA-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Nowak_6-1" class="reference"><a href="#cite_note-Nowak-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Feldhamer_7-3" class="reference"><a href="#cite_note-Feldhamer-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>. </p> <div class="mw-heading mw-heading2"><h2 id="Distribuzione_e_habitat">Distribuzione e habitat</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=3" title="Modifica la sezione Distribuzione e habitat" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=3" title="Edit section's source code: Distribuzione e habitat"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Red_squirrel.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/95/Red_squirrel.jpg/220px-Red_squirrel.jpg" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/95/Red_squirrel.jpg/330px-Red_squirrel.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/95/Red_squirrel.jpg/440px-Red_squirrel.jpg 2x" data-file-width="1000" data-file-height="1000" /></a><figcaption>Scoiattolo rosso nel <a href="/wiki/Qu%C3%A9bec_(provincia)" title="Québec (provincia)">Québec</a>.</figcaption></figure> <p>Lo scoiattolo rosso occupa un <a href="/wiki/Areale" title="Areale">areale</a> molto vasto, che dall'<a href="/wiki/Alaska" title="Alaska">Alaska</a> e dal <a href="/wiki/Qu%C3%A9bec_(provincia)" title="Québec (provincia)">Québec</a> si spinge a sud, attraverso le <a href="/wiki/Montagne_Rocciose" title="Montagne Rocciose">Montagne Rocciose</a>, fino al <a href="/wiki/Nuovo_Messico" title="Nuovo Messico">Nuovo Messico</a> e, attraverso gli <a href="/wiki/Appalachi" title="Appalachi">Appalachi</a>, fino alla <a href="/wiki/Carolina_del_Sud" title="Carolina del Sud">Carolina del Sud</a><sup id="cite_ref-IUCN_2-1" class="reference"><a href="#cite_note-IUCN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Steele_3-6" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Hafner_5-1" class="reference"><a href="#cite_note-Hafner-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Nowak_6-2" class="reference"><a href="#cite_note-Nowak-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Feldhamer_7-4" class="reference"><a href="#cite_note-Feldhamer-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>. È stato introdotto anche sull'isola di <a href="/wiki/Terranova" title="Terranova">Terranova</a>, presso la costa orientale del <a href="/wiki/Canada" title="Canada">Canada</a><sup id="cite_ref-IUCN_2-2" class="reference"><a href="#cite_note-IUCN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>. La sottospecie <i>T. h. grahamensis</i>, isolata da tutte le altre, è ristretta al monte Graham, una vetta dei monti Pinaleño, nel sud-est dell'<a href="/wiki/Arizona" title="Arizona">Arizona</a><sup id="cite_ref-IUCN_2-3" class="reference"><a href="#cite_note-IUCN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-UoA_4-5" class="reference"><a href="#cite_note-UoA-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Hafner_5-2" class="reference"><a href="#cite_note-Hafner-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Nowak_6-3" class="reference"><a href="#cite_note-Nowak-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>. </p><p>Gli scoiattoli rossi vivono essenzialmente nelle <a href="/wiki/Foresta" title="Foresta">foreste</a> <a href="/wiki/Deciduo" class="mw-redirect" title="Deciduo">decidue</a> e <a href="/wiki/Pianta_sempreverde" title="Pianta sempreverde">sempreverdi</a>, ma hanno una gran capacità di adattamento, per cui costruiscono la loro <a href="/wiki/Tana_(zoologia)" class="mw-redirect" title="Tana (zoologia)">tana</a> in qualsiasi riparo, attorno alle case, nelle <a href="/wiki/Siepe" title="Siepe">siepi</a> e nel sottosuolo<sup id="cite_ref-Steele_3-7" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Scavano gallerie anche sotto la <a href="/wiki/Neve" title="Neve">neve</a> e si servono persino di quelle abbandonate dalle <a href="/wiki/Marmota" title="Marmota">marmotte</a> e dai <a href="/wiki/Tamias_(zoologia)" title="Tamias (zoologia)">tamia</a><sup id="cite_ref-Steele_3-8" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Grazie alla loro capacità di adattamento a vivere sottoterra o sotto mucchi di pietre o di legname sono riusciti a sopravvivere al massiccio <a href="/wiki/Disboscamento" class="mw-redirect" title="Disboscamento">disboscamento</a> delle foreste che ha ridotto l'ambiente vitale degli scoiattoli prettamente arboricoli<sup id="cite_ref-Steele_3-9" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. </p><p>I <a href="/wiki/Nido" title="Nido">nidi</a> vengono costruiti sulle biforcazioni dei rami, tra le foglie, nelle tane dei <a href="/wiki/Picidae" title="Picidae">picchi</a>, nelle cavità naturali dei vecchi alberi, nel sottosuolo, nel terreno asciutto o anche sotto pietre e ceppi<sup id="cite_ref-Steele_3-10" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Occasionalmente gli scoiattoli rossi si servono anche di vecchi nidi di corvi e di falchi come fondamenta per i loro nidi. Questi sono composti di tre strati: all'esterno da un intreccio di ramoscelli che portano ancora attaccate le foglie, all'interno da uno strato compatto di foglie pressoché impermeabile, mentre la camera interna, grande 10–15 cm, è rivestita di materiale più fine quale erba secca, muschio, penne e peli. </p><p>Gli scoiattoli rossi sono animali <a href="/wiki/Diurnalit%C3%A0" title="Diurnalità">diurni</a>, ma approfittano anche delle notti di <a href="/wiki/Luna" title="Luna">luna</a> per uscire all'aperto e sono laboriosi durante tutto l'inverno, rimanendo nei loro nidi solo durante il maltempo<sup id="cite_ref-Steele_3-11" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. </p> <div class="mw-heading mw-heading2"><h2 id="Biologia">Biologia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=4" title="Modifica la sezione Biologia" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=4" title="Edit section's source code: Biologia"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Alimentazione">Alimentazione</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=5" title="Modifica la sezione Alimentazione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=5" title="Edit section's source code: Alimentazione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Gli scoiattoli rossi fanno un grande spreco di cibo, danneggiando e rifiutando più di quanto non ne mangino, e conservandone più di quanto ne possano consumare. La loro <a href="/wiki/Dieta" title="Dieta">dieta</a> è essenzialmente vegetariana con le <a href="/wiki/Strobilo" title="Strobilo">pigne</a> di <a href="/wiki/Pinus" title="Pinus">pino</a> che costituiscono la base della loro alimentazione durante tutto l'anno<sup id="cite_ref-Steele_3-12" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Essi le raccolgono dai rami in <a href="/wiki/Autunno" title="Autunno">autunno</a>, quando sono ancora verdi, e prima che possano maturare e cadere lontano<sup id="cite_ref-Steele_3-13" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. In seguito le trasportano giù dall'albero e le immagazzinano a gruppi di 150, o anche più, sotto il suolo umido in modo che non possano maturare prima del necessario. Anche altri <a href="/wiki/Seme" title="Seme">semi</a>, quali <a href="/wiki/Nocciola" title="Nocciola">nocciole</a> e <a href="/wiki/Bacca" title="Bacca">bacche</a>, rientrano tuttavia nella loro dieta; a <a href="/wiki/Primavera" title="Primavera">primavera</a>, quando le <a href="/wiki/Gemma_(botanica)" title="Gemma (botanica)">gemme</a> dell'<a href="/wiki/Ulmus" title="Ulmus">olmo</a> e dell'<a href="/wiki/Acer_(botanica)" title="Acer (botanica)">acero</a> si staccano, gli scoiattoli rossi ne spaccano la <a href="/wiki/Corteccia_(botanica)" title="Corteccia (botanica)">corteccia</a> per succhiarne il succo, così come spaccano le <a href="/wiki/Mela" title="Mela">mele</a> per mangiarne i semi, lasciando invece intatta la <a href="/wiki/Mesocarpo" title="Mesocarpo">polpa</a><sup id="cite_ref-Steele_3-14" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Sono anche ghiotti di <a href="/wiki/Funghi" class="mw-redirect" title="Funghi">funghi</a> e spesso li conservano fino a seccarli nelle spaccature degli alberi e nei ceppi<sup id="cite_ref-Steele_3-15" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Si nutrono anche della letale <i><a href="/wiki/Amanita_muscaria" title="Amanita muscaria">Amanita muscaria</a></i>, dato che sembrano immuni al suo <a href="/wiki/Veleno" title="Veleno">veleno</a><sup id="cite_ref-Steele_3-16" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Infine, ultime fra le loro preferenze sono la corteccia del <a href="/wiki/Populus_tremula" title="Populus tremula">pioppo comune</a> e del <a href="/wiki/Populus_tremuloides" title="Populus tremuloides">pioppo tremulo</a>, di cui si nutrono nei periodi di carestia, durante i quali non disdegnano altri alimenti vegetali e persino <a href="/wiki/Insetti" class="mw-redirect" title="Insetti">insetti</a>, come ad esempio <a href="/wiki/Larva" title="Larva">larve</a> di <a href="/wiki/Coleoptera" title="Coleoptera">scarafaggi</a> snidate dal legno, <a href="/wiki/Carne" title="Carne">carne</a> putrefatta e, occasionalmente <a href="/wiki/Uovo_(biologia)" title="Uovo (biologia)">uova</a> e <a href="/wiki/Uccelli" class="mw-redirect" title="Uccelli">uccellini</a> e, talvolta, uccidono e mangiano persino i piccoli di alcuni <a href="/wiki/Coniglio" title="Coniglio">conigli</a><sup id="cite_ref-Steele_3-17" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. </p> <div class="mw-heading mw-heading3"><h3 id="Riproduzione">Riproduzione</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=6" title="Modifica la sezione Riproduzione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=6" title="Edit section's source code: Riproduzione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Il corteggiamento inizia in primavera e talvolta fin dal mese di <a href="/wiki/Gennaio" title="Gennaio">gennaio</a><sup id="cite_ref-Steele_3-18" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Al pari di altri scoiattoli, la caccia nuziale consiste in una gara in cui diversi scoiattoli rossi si inseguono su e giù per gli alberi e sul terreno, lanciando ognuno un richiamo sincopato, dolce e monotono. In seguito si uniscono e l'<a href="/wiki/Accoppiamento_(zoologia)" title="Accoppiamento (zoologia)">accoppiamento</a> avviene in <a href="/wiki/Marzo" title="Marzo">marzo</a> o <a href="/wiki/Aprile" title="Aprile">aprile</a> a seconda delle condizioni ambientali<sup id="cite_ref-Steele_3-19" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Il maschio e la femmina collaborano alla costruzione del nido ma, completatolo, il primo non partecipa più alla vita familiare. </p><p>I piccoli, 4 o 5 in media per nidiata, partoriti dopo un periodo di <a href="/wiki/Gestazione" class="mw-redirect" title="Gestazione">gestazione</a> di 40 giorni, sono ciechi e completamente privi di peluria, che spunta solo dopo una decina di giorni<sup id="cite_ref-Steele_3-20" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Vengono nutriti per cinque settimane e poi vengono cacciati via dalla madre che avrà una seconda nidiata in autunno. </p> <div class="mw-heading mw-heading3"><h3 id="Nemici">Nemici</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=7" title="Modifica la sezione Nemici" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=7" title="Edit section's source code: Nemici"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Lynx_rufus" title="Lynx rufus">Linci rosse</a>, <a href="/wiki/Neovison_vison" class="mw-redirect" title="Neovison vison">visoni</a>, <a href="/wiki/Falco" title="Falco">falchi</a> adulti e <a href="/wiki/Bubo" title="Bubo">gufi</a> catturano facilmente gli scoiattoli rossi, ma i loro veri nemici sono le <a href="/wiki/Martes_americana" title="Martes americana">martore americane</a> che, in alcune zone, si nutrono quasi esclusivamente di scoiattoli rossi<sup id="cite_ref-Steele_3-21" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. Infatti si arrampicano con la stessa abilità degli scoiattoli e li inseguono a balzi lungo i rami più sottili degli alberi. </p><p>La penuria di <a href="/wiki/Pelliccia" title="Pelliccia">animali da pelliccia</a> in molte zone ha provocato un incremento della caccia agli scoiattoli rossi, il cui manto viene utilizzato come <a href="/wiki/Guarnizione" title="Guarnizione">guarnizione</a><sup id="cite_ref-Steele_3-22" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>. </p> <div class="mw-heading mw-heading2"><h2 id="Conservazione">Conservazione</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=8" title="Modifica la sezione Conservazione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=8" title="Edit section's source code: Conservazione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Mt._Graham_Red_Squirrel.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Mt._Graham_Red_Squirrel.jpg/180px-Mt._Graham_Red_Squirrel.jpg" decoding="async" width="180" height="213" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Mt._Graham_Red_Squirrel.jpg/270px-Mt._Graham_Red_Squirrel.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/38/Mt._Graham_Red_Squirrel.jpg/360px-Mt._Graham_Red_Squirrel.jpg 2x" data-file-width="590" data-file-height="699" /></a><figcaption><i>T. h. grahamensis</i>.</figcaption></figure> <p>Lo scoiattolo rosso è una specie ampiamente diffusa e comune che non sembra correre alcun rischio di estinzione<sup id="cite_ref-IUCN_2-4" class="reference"><a href="#cite_note-IUCN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>. In alcune aree, la specie può causare danni alle piantagioni di conifere, dal momento che ne strappa la corteccia e si nutre di gemme e semi, sebbene possa anche giocare un ruolo importante nel <a href="/wiki/Rimboschimento" title="Rimboschimento">rimboschimento</a> disperdendo e sotterrando i semi. In Canada, è una delle specie più cacciate per la <a href="/wiki/Pelliccia" title="Pelliccia">pelliccia</a><sup id="cite_ref-Steele_3-23" class="reference"><a href="#cite_note-Steele-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Nowak_6-4" class="reference"><a href="#cite_note-Nowak-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Feldhamer_7-5" class="reference"><a href="#cite_note-Feldhamer-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>. </p><p>Tuttavia, sebbene nella sua interezza la specie non sia attualmente minacciata, la sottospecie del monte Graham è costituita solamente da una popolazione esigua, stimata nel 2009 a circa 250 esemplari<sup id="cite_ref-Arizona_8-0" class="reference"><a href="#cite_note-Arizona-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>, tutti relegati in un'unica area isolata<sup id="cite_ref-IUCN_2-5" class="reference"><a href="#cite_note-IUCN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Hafner_5-3" class="reference"><a href="#cite_note-Hafner-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Feldhamer_7-6" class="reference"><a href="#cite_note-Feldhamer-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>. Ritenuto estinto negli anni '50, lo scoiattolo rosso del monte Graham venne riscoperto negli anni '70<sup id="cite_ref-UoA_4-6" class="reference"><a href="#cite_note-UoA-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>, ma negli ultimi decenni il suo areale e la sua popolazione si sono ridotti sempre più<sup id="cite_ref-Arizona2_9-0" class="reference"><a href="#cite_note-Arizona2-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>. La principale minaccia per questa sottospecie è costituita dalla perdita e dalla <a href="/wiki/Frammentazione_dell%27habitat" class="mw-redirect" title="Frammentazione dell'habitat">frammentazione dell'habitat</a> dovuta alla raccolta del <a href="/wiki/Legname" title="Legname">legname</a>, allo sviluppo di reti stradali e di strutture turistiche, e dalla costruzione di un controverso <a href="/wiki/Osservatorio_internazionale_del_monte_Graham" title="Osservatorio internazionale del monte Graham">complesso di osservatori</a><sup id="cite_ref-IUCN_2-6" class="reference"><a href="#cite_note-IUCN-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-UoA_4-7" class="reference"><a href="#cite_note-UoA-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Hafner_5-4" class="reference"><a href="#cite_note-Hafner-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Feldhamer_7-7" class="reference"><a href="#cite_note-Feldhamer-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Arizona_8-1" class="reference"><a href="#cite_note-Arizona-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>, mentre siccità, incendi ed esplosioni di insetti possono solo peggiorare una situazione già compromessa<sup id="cite_ref-US_10-0" class="reference"><a href="#cite_note-US-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Kop_11-0" class="reference"><a href="#cite_note-Kop-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup>. La perdita dell'habitat potrebbe inoltre comportare la competizione con lo scoiattolo di Abert (<i><a href="/wiki/Sciurus_aberti" title="Sciurus aberti">Sciurus aberti</a></i>), introdotto nella zona<sup id="cite_ref-Hafner_5-5" class="reference"><a href="#cite_note-Hafner-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-US_10-1" class="reference"><a href="#cite_note-US-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>, e si teme che i <a href="/wiki/Mutamento_climatico" class="mw-redirect" title="Mutamento climatico">mutamenti climatici</a> possano ridurre ulteriormente l'habitat disponibile<sup id="cite_ref-US_10-2" class="reference"><a href="#cite_note-US-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>. </p> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=9" title="Modifica la sezione Note" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=9" title="Edit section's source code: Note"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-MSW3-1"><a href="#cite_ref-MSW3_1-0"><b>^</b></a> <span class="reference-text"><cite class="citation testo" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) D.E. Wilson e D.M. Reeder, <a rel="nofollow" class="external text" href="https://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?s=y&id=12400253"><span style="font-style:italic;">Tamiasciurus hudsonicus</span></a>, in <span style="font-style:italic;">Mammal Species of the World. A Taxonomic and Geographic Reference</span>, 3ª ed., Johns Hopkins University Press, 2005, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/0-8018-8221-4" title="Speciale:RicercaISBN/0-8018-8221-4">0-8018-8221-4</a>.</cite></span> </li> <li id="cite_note-IUCN-2"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-IUCN_2-0">a</a></i></sup> <sup><i><a href="#cite_ref-IUCN_2-1">b</a></i></sup> <sup><i><a href="#cite_ref-IUCN_2-2">c</a></i></sup> <sup><i><a href="#cite_ref-IUCN_2-3">d</a></i></sup> <sup><i><a href="#cite_ref-IUCN_2-4">e</a></i></sup> <sup><i><a href="#cite_ref-IUCN_2-5">f</a></i></sup> <sup><i><a href="#cite_ref-IUCN_2-6">g</a></i></sup></span> <span class="reference-text"><cite class="citation testo" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) Linzey, A.V. & NatureServe (Hammerson, G.) 2008, <a rel="nofollow" class="external text" href="http://apiv3.iucnredlist.org/api/v3/taxonredirect/42587"><span style="font-style:italic;">Tamiasciurus hudsonicus</span></a>, su <span style="font-style:italic;"><a href="/wiki/Lista_rossa_IUCN" title="Lista rossa IUCN">IUCN Red List of Threatened Species</a></span>, Versione 2020.2, <a href="/wiki/Unione_internazionale_per_la_conservazione_della_natura" title="Unione internazionale per la conservazione della natura">IUCN</a>, 2020.</cite></span> </li> <li id="cite_note-Steele-3"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Steele_3-0">a</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-1">b</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-2">c</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-3">d</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-4">e</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-5">f</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-6">g</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-7">h</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-8">i</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-9">j</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-10">k</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-11">l</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-12">m</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-13">n</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-14">o</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-15">p</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-16">q</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-17">r</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-18">s</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-19">t</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-20">u</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-21">v</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-22">w</a></i></sup> <sup><i><a href="#cite_ref-Steele_3-23">x</a></i></sup></span> <span class="reference-text">Steele, M.A. (1998) <a rel="nofollow" class="external text" href="http://www.science.smith.edu/departments/Biology/VHAYSSEN/msi/pdf/i0076-3519-586-01-0001.pdf"><i>Tamiasciurus hudsonicus</i></a>. <i>Mammalian Species</i>, <b>586</b>: 1-9.</span> </li> <li id="cite_note-UoA-4"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-UoA_4-0">a</a></i></sup> <sup><i><a href="#cite_ref-UoA_4-1">b</a></i></sup> <sup><i><a href="#cite_ref-UoA_4-2">c</a></i></sup> <sup><i><a href="#cite_ref-UoA_4-3">d</a></i></sup> <sup><i><a href="#cite_ref-UoA_4-4">e</a></i></sup> <sup><i><a href="#cite_ref-UoA_4-5">f</a></i></sup> <sup><i><a href="#cite_ref-UoA_4-6">g</a></i></sup> <sup><i><a href="#cite_ref-UoA_4-7">h</a></i></sup></span> <span class="reference-text">University of Arizona - <a rel="nofollow" class="external text" href="http://ag.arizona.edu/research/redsquirrel/">Mount Graham Biology Program: Mount Graham Red Squirrel (<i>Tamiasciurus hudsonicus grahamensis</i>)</a> (December, 2009).</span> </li> <li id="cite_note-Hafner-5"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Hafner_5-0">a</a></i></sup> <sup><i><a href="#cite_ref-Hafner_5-1">b</a></i></sup> <sup><i><a href="#cite_ref-Hafner_5-2">c</a></i></sup> <sup><i><a href="#cite_ref-Hafner_5-3">d</a></i></sup> <sup><i><a href="#cite_ref-Hafner_5-4">e</a></i></sup> <sup><i><a href="#cite_ref-Hafner_5-5">f</a></i></sup></span> <span class="reference-text">Hafner, D.J., Yensen, E. and Kirkland Jr, G.L. (1998) <a rel="nofollow" class="external text" href="http://data.iucn.org/dbtw-wpd/edocs/1998-039.pdf"><i>North American Rodents: Status Survey and Conservation Action Plan</i></a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120514103449/http://data.iucn.org/dbtw-wpd/edocs/1998-039.pdf">Archiviato</a> il 14 maggio 2012 in <a href="/wiki/Internet_Archive" title="Internet Archive">Internet Archive</a>.. IUCN/SSC Rodent Specialist Group, IUCN, Gland, Switzerland and Cambridge, UK.</span> </li> <li id="cite_note-Nowak-6"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Nowak_6-0">a</a></i></sup> <sup><i><a href="#cite_ref-Nowak_6-1">b</a></i></sup> <sup><i><a href="#cite_ref-Nowak_6-2">c</a></i></sup> <sup><i><a href="#cite_ref-Nowak_6-3">d</a></i></sup> <sup><i><a href="#cite_ref-Nowak_6-4">e</a></i></sup></span> <span class="reference-text">Nowak, R.M. (1991) <i>Walker's Mammals of the World</i>. The Johns Hopkins University Press, Baltimore and London.</span> </li> <li id="cite_note-Feldhamer-7"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Feldhamer_7-0">a</a></i></sup> <sup><i><a href="#cite_ref-Feldhamer_7-1">b</a></i></sup> <sup><i><a href="#cite_ref-Feldhamer_7-2">c</a></i></sup> <sup><i><a href="#cite_ref-Feldhamer_7-3">d</a></i></sup> <sup><i><a href="#cite_ref-Feldhamer_7-4">e</a></i></sup> <sup><i><a href="#cite_ref-Feldhamer_7-5">f</a></i></sup> <sup><i><a href="#cite_ref-Feldhamer_7-6">g</a></i></sup> <sup><i><a href="#cite_ref-Feldhamer_7-7">h</a></i></sup></span> <span class="reference-text">Feldhamer, G.A., Thompson, B.C. and Chapman, J.A. (2003) <i>Wild Mammals of North America: Biology, Management, and Conservation. Second Edition</i>. The Johns Hopkins University Press, Baltimore.</span> </li> <li id="cite_note-Arizona-8"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-Arizona_8-0">a</a></i></sup> <sup><i><a href="#cite_ref-Arizona_8-1">b</a></i></sup></span> <span class="reference-text">Arizona Game and Fish Department - Wildlife Blog: Wildlife News, November 9th, 2009 - <a rel="nofollow" class="external text" href="http://www.azgfd.net/wildlife/conservation-news/">Mount Graham red squirrel fall 2009 count announced</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130216092920/http://www.azgfd.net/wildlife/conservation-news/">Archiviato</a> il 16 febbraio 2013 in <a href="/wiki/Internet_Archive" title="Internet Archive">Internet Archive</a>. (December, 2009).</span> </li> <li id="cite_note-Arizona2-9"><a href="#cite_ref-Arizona2_9-0"><b>^</b></a> <span class="reference-text">U.S. Fish and Wildlife Service. (1992) <a rel="nofollow" class="external text" href="https://ecos.fws.gov/docs/recovery_plan/930503.pdf"><i>Mount Graham Red Squirrel Recovery Plan</i>. U.S. Fish and Wildlife Service, Albuquerque, New Mexico.</a></span> </li> <li id="cite_note-US-10"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-US_10-0">a</a></i></sup> <sup><i><a href="#cite_ref-US_10-1">b</a></i></sup> <sup><i><a href="#cite_ref-US_10-2">c</a></i></sup></span> <span class="reference-text">U.S. Fish and Wildlife Service. (2008) <a rel="nofollow" class="external text" href="https://ecos.fws.gov/docs/five_year_review/doc1617.pdf"><i>Mount Graham Red Squirrel (Tamiasciurus hudsonicus grahamensis). 5-Year Review: Summary and Evaluation</i></a>. U.S. Fish and Wildlife Service, Phoenix, Arizona.</span> </li> <li id="cite_note-Kop-11"><a href="#cite_ref-Kop_11-0"><b>^</b></a> <span class="reference-text">Koprowski, J.L., Alanen, M.I. and Lynch, A.M. (2005) Nowhere to run and nowhere to hide: response of endemic Mt. Graham red squirrels to catastrophic forest damage. <i>Biological Conservation</i>, <b>126</b>: 491-498.</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=10" title="Modifica la sezione Altri progetti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=10" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><span class="plainlinks" title="commons:Category:Tamiasciurus hudsonicus"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Tamiasciurus_hudsonicus?uselang=it">Wikimedia Commons</a></span></li> <li class="" title=""><span class="plainlinks" title="wikispecies:Tamiasciurus hudsonicus"><a class="external text" href="https://species.wikimedia.org/wiki/Tamiasciurus_hudsonicus?uselang=it">Wikispecies</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file su <b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Tamiasciurus_hudsonicus?uselang=it">Tamiasciurus hudsonicus</a></span></b></li> <li><span typeof="mw:File"><a href="https://species.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikispecies"><img alt="Collabora a Wikispecies" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/WikiSpecies_notext.svg/18px-WikiSpecies_notext.svg.png" decoding="async" width="18" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2e/WikiSpecies_notext.svg/27px-WikiSpecies_notext.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2e/WikiSpecies_notext.svg/36px-WikiSpecies_notext.svg.png 2x" data-file-width="106" data-file-height="129" /></a></span> <span class="plainlinks"><a class="external text" href="https://species.wikimedia.org/wiki/?uselang=it">Wikispecies</a></span> contiene informazioni su <b><span class="plainlinks"><a class="external text" href="https://species.wikimedia.org/wiki/Tamiasciurus_hudsonicus?uselang=it">Tamiasciurus hudsonicus</a></span></b></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&veaction=edit&section=11" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tamiasciurus_hudsonicus&action=edit&section=11" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=180166"><span style="font-style:italic;">ITIS Standard Report Page: Tamiasciurus hudsonicus</span></a>, in <span style="font-style:italic;"><a href="/wiki/Integrated_Taxonomic_Information_System" title="Integrated Taxonomic Information System">Integrated Taxonomic Information System</a></span>. <small>URL consultato il 18 marzo 2006</small>.</cite></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20110706202149/http://www.redsquirrel.ca/KRSP/Home.html">Kluane Red Squirrel Project web page</a>, Accessed on May 6, 2010.</li> <li><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20111204001240/http://www.mnh.si.edu/mna/image_info.cfm?species_id=400"><span style="font-style:italic;">Smithsonian article on American Red Squirrel</span></a>, su <span style="font-style:italic;">mnh.si.edu</span>. <small>URL consultato il 25 gennaio 2012</small> <small>(archiviato dall'<abbr title="http://www.mnh.si.edu/mna/image_info.cfm?species_id=400">url originale</abbr> il 4 dicembre 2011)</small>.</cite></li> <li><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="http://www.ag.arizona.edu/research/redsquirrel/"><span style="font-style:italic;">Mount Graham Red Squirrel Research at School of Natural Resources and the Environment at University of Arizona</span></a>, su <span style="font-style:italic;">ag.arizona.edu</span>.</cite></li></ul> <style data-mw-deduplicate="TemplateStyles:r140554510">.mw-parser-output .CdA{border:1px solid #aaa;width:100%;margin:auto;font-size:90%;padding:2px}.mw-parser-output .CdA th{background-color:#f2f2f2;font-weight:bold;width:20%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-night .mw-parser-output .CdA th{background-color:#202122}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .CdA{border-color:#54595D}html.skin-theme-clientpref-os .mw-parser-output .CdA th{background-color:#202122}}</style><table class="CdA"><tbody><tr><th><a href="/wiki/Aiuto:Controllo_di_autorit%C3%A0" title="Aiuto:Controllo di autorità">Controllo di autorità</a></th><td><a href="/wiki/Library_of_Congress_Control_Number" title="Library of Congress Control Number">LCCN</a> <span class="uid">(<span style="font-weight:bolder; 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