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data-trace="false" data-dom-id="Pill-react-component-4c62be17-433a-4127-97d3-7395f4e4477f"></div> <div id="Pill-react-component-4c62be17-433a-4127-97d3-7395f4e4477f"></div> </a></div></div></div></div><div class="right-panel-container"><div class="user-content-wrapper"><div class="uploads-container" id="social-redesign-work-container"><div class="upload-header"><h2 class="ds2-5-heading-sans-serif-xs">Uploads</h2></div><div class="documents-container backbone-social-profile-documents" style="width: 100%;"><div class="u-taCenter"></div><div class="profile--tab_content_container js-tab-pane tab-pane active" id="all"><div class="profile--tab_heading_container js-section-heading" data-section="Papers" id="Papers"><h3 class="profile--tab_heading_container">Papers by Arne Moksnes</h3></div><div class="js-work-strip profile--work_container" data-work-id="89516306"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/89516306/Habitat_and_space_use_of_European_cuckoo_females_during_the_egg_laying_period"><img alt="Research paper thumbnail of Habitat and space use of European cuckoo females during the egg laying period" class="work-thumbnail" src="https://attachments.academia-assets.com/93308224/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/89516306/Habitat_and_space_use_of_European_cuckoo_females_during_the_egg_laying_period">Habitat and space use of European cuckoo females during the egg laying period</a></div><div class="wp-workCard_item"><span>Behaviour</span><span>, 2004</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">In brood parasites, knowledge of spacing behaviour, habitat use and territoriality may reveal cue...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">In brood parasites, knowledge of spacing behaviour, habitat use and territoriality may reveal cues about how parasites find and use their hosts. To study the use of space and habitat of European cuckoos, Cuculus canorus, we radio-tagged 16 females during four consecutive reproductive seasons. We hypothesized that during the laying period cuckoo females should (1) use habitats selectively, and (2) attempt to monopolize potential egg laying areas to reduce competition for host nests. Our data are consistent with the first hypothesis: the use of pond edges compared to forest and transitional habitats was significantly greater than expected from the habitat availability in the total area and within individual female home ranges. All 26 directly observed egg layings and 27 nest visits without laying occurred at pond edges in nests of Acrocephalus spp. Females spent significantly more time at pond edges on egglaying days than on non-laying days. The second hypothesis was not supported: fe...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="7d8756f64fce98cf1f730ea0f43bfcb8" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":93308224,"asset_id":89516306,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/93308224/download_file?st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="89516306"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="89516306"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 89516306; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=89516306]").text(description); $(".js-view-count[data-work-id=89516306]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 89516306; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='89516306']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 89516306, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "7d8756f64fce98cf1f730ea0f43bfcb8" } } $('.js-work-strip[data-work-id=89516306]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":89516306,"title":"Habitat and space use of European cuckoo females during the egg laying period","translated_title":"","metadata":{"abstract":"In brood parasites, knowledge of spacing behaviour, habitat use and territoriality may reveal cues about how parasites find and use their hosts. To study the use of space and habitat of European cuckoos, Cuculus canorus, we radio-tagged 16 females during four consecutive reproductive seasons. We hypothesized that during the laying period cuckoo females should (1) use habitats selectively, and (2) attempt to monopolize potential egg laying areas to reduce competition for host nests. Our data are consistent with the first hypothesis: the use of pond edges compared to forest and transitional habitats was significantly greater than expected from the habitat availability in the total area and within individual female home ranges. All 26 directly observed egg layings and 27 nest visits without laying occurred at pond edges in nests of Acrocephalus spp. Females spent significantly more time at pond edges on egglaying days than on non-laying days. The second hypothesis was not supported: fe...","publisher":"Brill","publication_date":{"day":null,"month":null,"year":2004,"errors":{}},"publication_name":"Behaviour"},"translated_abstract":"In brood parasites, knowledge of spacing behaviour, habitat use and territoriality may reveal cues about how parasites find and use their hosts. To study the use of space and habitat of European cuckoos, Cuculus canorus, we radio-tagged 16 females during four consecutive reproductive seasons. We hypothesized that during the laying period cuckoo females should (1) use habitats selectively, and (2) attempt to monopolize potential egg laying areas to reduce competition for host nests. Our data are consistent with the first hypothesis: the use of pond edges compared to forest and transitional habitats was significantly greater than expected from the habitat availability in the total area and within individual female home ranges. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="50529857"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/50529857/Modelling_the_maintenance_of_egg_polymorphism_in_avian_brood_parasites_and_their_hosts"><img alt="Research paper thumbnail of Modelling the maintenance of egg polymorphism in avian brood parasites and their hosts" class="work-thumbnail" src="https://attachments.academia-assets.com/68477771/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/50529857/Modelling_the_maintenance_of_egg_polymorphism_in_avian_brood_parasites_and_their_hosts">Modelling the maintenance of egg polymorphism in avian brood parasites and their hosts</a></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="12a080293529c8680834b51855ecfba6" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":68477771,"asset_id":50529857,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/68477771/download_file?st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="50529857"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="50529857"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 50529857; 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Several parrotbill species of the genus Paradoxornis are parasitized by the  common cuckoo Cuculus canorus and clear polymorphism in egg phenotype is  observed. In this article, we develop a population genetics model in order to identify  key parameters that control maintenance of egg polymorphism. The model analyses  show that egg polymorphism can be maintained either statically as an equilibrium or  dynamically with frequency oscillations depending on the sensitivity of the host against  unlike eggs and how the parasite targets host nests with specific egg phenotypes. Based  on the model we discuss egg polymorphism observed in parrotbills and other host  species parasitized by the cuckoo. We suggest the possibility that frequencies of egg  phenotypes oscillate and we appeal for monitoring of cuckoo-host interactions over a  large spatiotemporal 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To test the hypothesis that spring environmental conditions (i.e., temperature and rainfall) may affect bird egg pigmentation, we measured by spectrophotometry and photography egg coloration and spottiness on reed warbler (Acrocephalus scirpaceus L.) clutches parasitized by the common cuckoo (Cuculus canorus L.) collected over a period of 24 years and preserved in the Zoological Museum, Copenhagen, Denmark. In addition, we investigated whether spring environmental conditions may influence the coevolutionary relationship between the cuckoo and its host via changes in cuckoo-host egg matching. Generalized mixed models revealed that reed warbler eggs were more brilliant in those springs with a higher rainfall and tended to be bluer and greener in springs with a lower relative temperature. On the other hand, cuckoo eggs were bluer and greener in springs with a higher rainfall. Cuckoo-host egg matching in blue-greenness and spottiness was better in springs with a higher rainfall. These results provide support for the existence of an environmental component on bird egg coloration and suggest that environmental factors may potentially affect the outcome of important features of the arms race between cuckoos and reed warblers.","grobid_abstract_attachment_id":38091581},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628065/Avil%C3%A9s_et_al_2007_BES_journal","translated_internal_url":"","created_at":"2015-07-04T10:45:38.972-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252176,"work_id":13628065,"tagging_user_id":32791142,"tagged_user_id":249070396,"co_author_invite_id":519855,"email":"j***s@eeza.csic.es","affiliation":"CSIC (Consejo Superior de Investigaciones Científicas-Spanish National Research Council)","display_order":0,"name":"Jesús M. 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Coevolutionary interactions between brood parasites and their hosts provide an ideal opportunity for studying animal cognition because egg recognition and rejection are some of the most important adaptations evolved in hosts to counter brood parasitism. The cognitive mechanisms hosts employ in egg recognition have received substantial interest, with 2 main hypotheses being put forward: 1) true egg recognition based on a knowledge of the hosts' own egg appearance (template that is innate and/or learned) and 2) discordancy by which individuals simply recognize eggs that are in minority as parasitic. These hypotheses are not necessarily mutually exclusive. We conducted egg experiments in the ashy-throated parrotbill (Paradoxornis alphonsianus), a common cuckoo (Cuculus canorus) host that lays immaculate, polymorphic eggs, and we obtained support for both hypotheses. Parrotbills use the presence of own eggs as a cue for recognizing parasitic eggs, supporting true recognition, but without the presence of own eggs as a template they failed to recognize the parasitic egg. Furthermore, some individuals erroneously rejected their own eggs when in minority, supporting recognition by discordancy. Such a combination of cognitive mechanisms that involves true recognition and discordancy in egg recognition in a single population has as far as we can tell never previously been described.","publication_name":"Behavioral Ecology","grobid_abstract_attachment_id":38091580},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628063/Reject_the_odd_egg_egg_recognition_mechanisms_in_parrotbills","translated_internal_url":"","created_at":"2015-07-04T10:45:38.739-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252262,"work_id":13628063,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"Reject the odd egg: egg recognition mechanisms in parrotbills"},{"id":2252300,"work_id":13628063,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":116640,"email":"b***e@bio.ntnu.no","display_order":4194304,"name":"Bård Stokke","title":"Reject the odd egg: egg recognition mechanisms in parrotbills"},{"id":2252358,"work_id":13628063,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":124562,"email":"a***r@snv.jussieu.fr","display_order":6291456,"name":"A. 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class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628061/Nest_defence_enemy_recognition_and_nest_inspection_behaviour_of_experimentally_parasitized_Reed_Warblers_Acrocephalus_scirpaceus_Capsule_Reed_Warblers_in_a_regularly_parasitized_population_do_not_recognize_Cuckoo_Cuculus_canorus_as_a_special_enemy_and_do_not_change_their_behaviour_at_nest_immed_"><img alt="Research paper thumbnail of Nest defence, enemy recognition and nest inspection behaviour of experimentally parasitized Reed Warblers Acrocephalus scirpaceus: Capsule Reed Warblers in a regularly parasitized population do not recognize Cuckoo Cuculus canorus as a special enemy and do not change their behaviour at nest immed..." class="work-thumbnail" src="https://attachments.academia-assets.com/45132538/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628061/Nest_defence_enemy_recognition_and_nest_inspection_behaviour_of_experimentally_parasitized_Reed_Warblers_Acrocephalus_scirpaceus_Capsule_Reed_Warblers_in_a_regularly_parasitized_population_do_not_recognize_Cuckoo_Cuculus_canorus_as_a_special_enemy_and_do_not_change_their_behaviour_at_nest_immed_">Nest defence, enemy recognition and nest inspection behaviour of experimentally parasitized Reed Warblers Acrocephalus scirpaceus: Capsule Reed Warblers in a regularly parasitized population do not recognize Cuckoo Cuculus canorus as a special enemy and do not change their behaviour at nest immed...</a></div><div class="wp-workCard_item"><span>Bird Study</span><span>, 2004</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="bebf74e05d286cee631ddcdc1fd41875" class="wp-workCard--action" rel="nofollow" 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recognize Cuckoo Cuculus canorus as a special enemy and do not change their behaviour at nest immed...","translated_title":"","metadata":{"ai_title_tag":"Reed Warblers' Nest Defense and Cuckoo Recognition Behavior","grobid_abstract":"Capsule Reed Warblers in a regularly parasitized population do not recognize Cuckoo Cuculus canorus as a special enemy and do not change their behaviour at nest immediately after being parasitized. Aims To assess if an intruder near the nest influences the behaviour of the Cuckoo host. Methods Host responses to Cuckoo, control Pigeon dummies and human intruder were observed. Host behaviour at 71 nests was video-recorded for 30 minutes at four experimental groups of nests: Cuckoo dummy, Cuckoo dummy + Cuckoo egg, Pigeon dummy, human intruder. Results Reed Warblers did not respond differently to the Cuckoo and the control species. The experimental procedure had no significant effect on the behaviour of hosts during the study period. We were unable to find any differences in the time spent at the nest, clutch inspection behaviour and nest defence behaviour between morning and afternoon experimental groups. Our results do not support the hypothesis that afternoon laying by the Cuckoo is maintained by a selection pressure from the host. We observed no ejection or egg-pecking during the 30-min period after the experimental parasitism. Conclusions Low aggression and non-specificity of host responses in our study area are in line with the fact that the Reed Warbler is an intermediate rejecter of Cuckoo eggs as expected from the spatial habitat structure hypothesis.","publication_date":{"day":null,"month":null,"year":2004,"errors":{}},"publication_name":"Bird 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href="https://www.academia.edu/13628060/The_spatial_habitat_structure_of_host_populations_explains_the_pattern_of_rejection_behavior_in_hosts_and_parasitic_adaptations_in">The spatial habitat structure of host populations explains the pattern of rejection behavior in hosts and parasitic adaptations in</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">... Soler, M, Møller, AP, 1990. Duration of sympatry and coevolution between great spotted cuckoo...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">... Soler, M, Møller, AP, 1990. Duration of sympatry and coevolution between great spotted cuckoo and its magpie host. Nature, Lond 343: 748-750. Page 146. ... 23 1990 Magne Husby Dr. scient. 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Karel Janko, Oddmund Kleven, Jarmila Jemelíková, Dorte Meilvang, Oldrich Mikulica, Cecilie Mø...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">... Karel Janko, Oddmund Kleven, Jarmila Jemelíková, Dorte Meilvang, Oldrich Mikulica, Cecilie Mørk, Per H. Olsen, Barbara and Michael Taborsky, and Yvonne Teuschl for ... CrossRef, CSA. Øien, IJ, A. Moksnes, E. Røskaft, E. Edvardsen, M. Honza, O. Kleven, and G. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="13628056"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628056/Costs_associated_with_recognition_and_rejection_of_parasitic_eggs_in_two_European_passerines"><img alt="Research paper thumbnail of Costs associated with recognition and rejection of parasitic eggs in two European passerines" class="work-thumbnail" src="https://attachments.academia-assets.com/45132553/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628056/Costs_associated_with_recognition_and_rejection_of_parasitic_eggs_in_two_European_passerines">Costs associated with recognition and rejection of parasitic eggs in two European passerines</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/ArneMoksnes">Arne Moksnes</a>, <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/GeirRudolfsen">Geir Rudolfsen</a>, and <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/MarcelHonza">Marcel Honza</a></span></div><div class="wp-workCard_item"><span>Behaviour</span><span>, 2002</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5aa75094c9dff60bd39155e9a7412fa0" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132553,"asset_id":13628056,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/45132553/download_file?st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="13628056"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="13628056"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 13628056; 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Such behaviour seems suboptimal, but has been explained by the existence of opposing selective pressures operating against the evolution of appropriate host defence. Costs associated with rejection and recognition of eggs are central topics in this respect. Here, we report the occurrence of such costs in two European passerines (chaf nches and blackcaps) that are good rejecters of foreign eggs, even though the common cuckoo does not presently use them as hosts. Since high rejection rates are maintained in the absence of parasitism, we predicted that few recognition errors are made by these species. We tested this prediction by monitoring the occurrence of such errors in both experimentally parasitised and non-parasitised host clutches. We found support for the prediction, as our results show that recognition errors are at best rare events in these two species. We discuss the role of intraspeci c brood parasitism as well as other explanations for the retention of a high rejection rate in these species. Various studies have reported mixed support for the occurrence of recognition errors among cuckoo hosts, and we consider other explanations for the existence of both acceptors and rejecters of foreign eggs in host populations.","publication_date":{"day":null,"month":null,"year":2002,"errors":{}},"publication_name":"Behaviour","grobid_abstract_attachment_id":45132553},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628056/Costs_associated_with_recognition_and_rejection_of_parasitic_eggs_in_two_European_passerines","translated_internal_url":"","created_at":"2015-07-04T10:45:38.026-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252194,"work_id":13628056,"tagging_user_id":32791142,"tagged_user_id":32954469,"co_author_invite_id":623192,"email":"g***n@uit.no","display_order":0,"name":"Geir Rudolfsen","title":"Costs associated with 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Survival of Reed Warbler Acrocephalus scirpaceus clutches in relation to nest position" class="work-thumbnail" src="https://attachments.academia-assets.com/45132713/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628055/Survival_of_Reed_Warbler_Acrocephalus_scirpaceus_clutches_in_relation_to_nest_position">Survival of Reed Warbler Acrocephalus scirpaceus clutches in relation to nest position</a></div><div class="wp-workCard_item"><span>Bird Study</span><span>, 1998</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2689dcb0f68434a1ea38289d20ec63ee" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" 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waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "2689dcb0f68434a1ea38289d20ec63ee" } } $('.js-work-strip[data-work-id=13628055]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":13628055,"title":"Survival of Reed Warbler Acrocephalus scirpaceus clutches in relation to nest position","translated_title":"","metadata":{"ai_title_tag":"Predation Impact on Reed Warbler Nest Survival by Position","grobid_abstract":"P redation is usually the primary cause of nesting failure in land birds 1,2 and has been found to account for 80% of nest losses on average across a wide range of species, habitats and geographic ranges. 1,3-5 Among Bird Study (1998) 45, 104-108","publication_date":{"day":null,"month":null,"year":1998,"errors":{}},"publication_name":"Bird Study","grobid_abstract_attachment_id":45132713},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628055/Survival_of_Reed_Warbler_Acrocephalus_scirpaceus_clutches_in_relation_to_nest_position","translated_internal_url":"","created_at":"2015-07-04T10:45:37.910-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252256,"work_id":13628055,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"Survival of Reed Warbler Acrocephalus scirpaceus clutches in relation to nest 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cuckoos by potential European cuckoo hosts</a></div><div class="wp-workCard_item"><span>Behaviour</span><span>, 2002</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="8bd4386a8ef24ab33b485fa5446e7807" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132550,"asset_id":13628054,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/45132550/download_file?st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="13628054"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa 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$('.js-work-strip[data-work-id=13628054]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":13628054,"title":"Aggression to dummy cuckoos by potential European cuckoo hosts","translated_title":"","metadata":{"grobid_abstract":"Aggression directed by 53 potential host species towards a dummy of the parasitic common cuckoo, Cuculus canorus, was tested in relation to their breeding habitat, their suitability as a host and whether they were breeding in sympatry or not with the cuckoo. Host habitats were divided into three categories: (1) always breeding near trees, (2) some populations breeding near trees, others in open areas, and always breeding in open areas. Each species was also placed in one of ve categories according to their suitability as a cuckoo host. Strong support was found for predictions derived from the 'spatial habitat structure hypothesis', which argues that common cuckoos only breed in areas where they have access to vantage points in trees. Thus, species which have some populations breeding near trees and others breeding further from trees have a different cuckoo-host population dynamics than species that always breed near trees, or always breed in open areas. Aggression levels were highest among species regarded as being always suitable as hosts, and species which always breed near trees. However, populations breeding in sympatry with the cuckoo were more aggressive than allopatric populations, indicating the plasticity of aggressive behaviour. 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However, only a few studies have paid attention to whether specific parts of eggs may be more important than others in rejection decisions by hosts. We hypothesised that the blunt pole in song thrush (Turdus philomelos) eggs possesses important cues for recognition of own eggs because this is the most visible part of the egg in the nest. We examined host response towards conspecific eggs painted blue either at the blunt or sharp poles, and used unpainted conspecific eggs as a control. We found, as predicted, that the experimental eggs painted blue at the blunt poles were rejected significantly more often than the experimental eggs unpainted at this pole. Rejection rates of experimental eggs were higher with increasing differences in number of spots between the two poles of own eggs. Our results confirmed that the essential cues used for egg discrimination in song thrushes are found at the blunt egg pole.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Behaviour","grobid_abstract_attachment_id":45132556},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628053/The_role_of_blunt_egg_pole_characteristics_for_recognition_of_eggs_in_the_song_thrush_Turdus_philomelos_","translated_internal_url":"","created_at":"2015-07-04T10:45:37.678-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252254,"work_id":13628053,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"The role of blunt egg pole characteristics for recognition of eggs in the song thrush ( Turdus philomelos )"},{"id":2252295,"work_id":13628053,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":116640,"email":"b***e@bio.ntnu.no","display_order":4194304,"name":"Bård Stokke","title":"The role of blunt egg pole characteristics for recognition of eggs in the song thrush ( Turdus philomelos )"},{"id":2252391,"work_id":13628053,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":623198,"email":"b***e@bio.ntnu","display_order":6291456,"name":"Bård Stokke","title":"The role of blunt egg pole characteristics for recognition of eggs in the song thrush ( Turdus philomelos )"}],"downloadable_attachments":[{"id":45132556,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132556/thumbnails/1.jpg","file_name":"The_role_of_blunt_egg_pole_characteristi20160427-2818-1aj7ylr.pdf","download_url":"https://www.academia.edu/attachments/45132556/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_role_of_blunt_egg_pole_characteristi.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132556/The_role_of_blunt_egg_pole_characteristi20160427-2818-1aj7ylr-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DThe_role_of_blunt_egg_pole_characteristi.pdf\u0026Expires=1733267615\u0026Signature=Y6ktXwT-6L6Rjoi-MG4vHtl7sDRu1GuTtbjKR3u0BgDgH3Dsv~7h6w6q5C9DCVnwE9Wu~oArauaApqdBPH4gnm2BILw~et~F1rdrI31TBiDFFtDHMphHEwcpyI8RkAjQGZZX4CjMQo7oVOnKPv1yZttK6JFz2DfGTTxuM9crTaOAQk8mGbe8MVyKAC9NFS5Q1r4uR0ClpgRFUlCxcbPe-F8THtpIqafzHAg-u4riA41--umuI319vvT29Bufs5FjDMfd6yPjd4Y7RX3a9L9mV8dc1i59GI3Esd9rr-EzksR8WDzh6AQRknBjEc8dDbKRAjAL1hZ9Qec4ksH8g-W1AQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"The_role_of_blunt_egg_pole_characteristics_for_recognition_of_eggs_in_the_song_thrush_Turdus_philomelos_","translated_slug":"","page_count":14,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne Moksnes","url":"https://independent.academia.edu/ArneMoksnes"},"attachments":[{"id":45132556,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132556/thumbnails/1.jpg","file_name":"The_role_of_blunt_egg_pole_characteristi20160427-2818-1aj7ylr.pdf","download_url":"https://www.academia.edu/attachments/45132556/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_role_of_blunt_egg_pole_characteristi.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132556/The_role_of_blunt_egg_pole_characteristi20160427-2818-1aj7ylr-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DThe_role_of_blunt_egg_pole_characteristi.pdf\u0026Expires=1733267615\u0026Signature=Y6ktXwT-6L6Rjoi-MG4vHtl7sDRu1GuTtbjKR3u0BgDgH3Dsv~7h6w6q5C9DCVnwE9Wu~oArauaApqdBPH4gnm2BILw~et~F1rdrI31TBiDFFtDHMphHEwcpyI8RkAjQGZZX4CjMQo7oVOnKPv1yZttK6JFz2DfGTTxuM9crTaOAQk8mGbe8MVyKAC9NFS5Q1r4uR0ClpgRFUlCxcbPe-F8THtpIqafzHAg-u4riA41--umuI319vvT29Bufs5FjDMfd6yPjd4Y7RX3a9L9mV8dc1i59GI3Esd9rr-EzksR8WDzh6AQRknBjEc8dDbKRAjAL1hZ9Qec4ksH8g-W1AQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":155,"name":"Evolutionary Biology","url":"https://www.academia.edu/Documents/in/Evolutionary_Biology"},{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology"},{"id":72667,"name":"Behaviour","url":"https://www.academia.edu/Documents/in/Behaviour"},{"id":169623,"name":"Brood Parasitism","url":"https://www.academia.edu/Documents/in/Brood_Parasitism"}],"urls":[{"id":4932420,"url":"http://openurl.ingenta.com/content/xref?genre=article\u0026issn=0005-7959\u0026volume=147\u0026issue=4\u0026spage=465"}]}, dispatcherData: dispatcherData }); 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However, very few species are frequently parasitized. The Cuckoo is divided into several distinct races termed gentes. Females of each gens specialize in parasitizing a particular host species. More than 20 such gentes are recognized in Europe. Each female Cuckoo lays eggs of constant appearance. Most gentes can be separated based on their distinct egg types, which in many cases mimic those of their hosts. Different gentes may occur in sympatry or may be separated geographically. Some gentes may occur in restricted parts of the host's distribution area. These patterns raise some fundamental questions like: Why are some passerine species preferred as hosts while others are not? Why does a host population consist of individuals either accepting or rejecting Cuckoo eggs? Why is there marked variation in egg rejection behavior between various host populations? How distinct and host-specialized are Cuckoo gentes? 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/></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628051/Unusually_high_losses_to_nest_collapse_in_Black_headed_Buntings_Emberiza_melanocephala_nesting_on_a_preferred_plant_species_Capsule_Birds_select_Cotton_Thistles_as_a_nesting_substrate_but_these_plants_provide_an_unstable_support">Unusually high losses to nest collapse in Black-headed Buntings Emberiza melanocephala nesting on a preferred plant species: Capsule Birds select Cotton Thistles as a nesting substrate but these plants provide an unstable support</a></div><div class="wp-workCard_item"><span>Bird Study</span><span>, 2008</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="6857dd5e72f776f444a919f77196ee0e" class="wp-workCard--action" rel="nofollow" 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class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628050/Absence_of_egg_discrimination_in_a_suitable_cuckoo_Cuculus_canorus_host_breeding_away_from_trees">Absence of egg discrimination in a suitable cuckoo Cuculus canorus host breeding away from trees</a></div><div class="wp-workCard_item"><span>Journal of Avian Biology</span><span>, 2010</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="55165c52555061e03acd7ba4dcc4cd69" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132559,"asset_id":13628050,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/45132559/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&s=profile"><span><i 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potential hosts some individuals reject poorly matching parasite eggs. Here we present unique absence of egg discrimination behaviour backed up by a lack of egg recognition abilities in a suitable common cuckoo Cuculus canorus host, the skylark Alauda arvensis. Skylarks did not show any clear rejection response to experimentally added highly non-mimetic foreign eggs in any behavioural context, even before they had started laying or when the whole clutch was exchanged with foreign eggs. This absence of antiparasite defence can be explained by the breeding habitat of larks consisting of largely treeless open landscapes where cuckoos have little access to the nests, thereby eroding the possibility of coevolutionary interactions. Our results are strikingly consistent with the spatial habitat structure hypothesis proposed to explain the occurrence and extent of avian host-parasite co-adaptation.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Journal of Avian Biology","grobid_abstract_attachment_id":45132559},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628050/Absence_of_egg_discrimination_in_a_suitable_cuckoo_Cuculus_canorus_host_breeding_away_from_trees","translated_internal_url":"","created_at":"2015-07-04T10:45:37.371-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252247,"work_id":13628050,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"Absence of egg discrimination in a suitable cuckoo Cuculus canorus host breeding away from trees"},{"id":2252323,"work_id":13628050,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":490621,"email":"a***v@bio.ntnu.no","display_order":4194304,"name":"Anton Antonov","title":"Absence of egg discrimination in a suitable cuckoo Cuculus canorus host breeding away from trees"}],"downloadable_attachments":[{"id":45132559,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132559/thumbnails/1.jpg","file_name":"Absence_of_egg_discrimination_in_a_suita20160427-7426-pjqp3e.pdf","download_url":"https://www.academia.edu/attachments/45132559/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Absence_of_egg_discrimination_in_a_suita.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132559/Absence_of_egg_discrimination_in_a_suita20160427-7426-pjqp3e-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DAbsence_of_egg_discrimination_in_a_suita.pdf\u0026Expires=1733267615\u0026Signature=YijlEnbXD-kBRny5AIo~OrtmGNZ97J9-u9EK1kkhVjTROlkzbVacm67FSKT3~nXNSBIZrFA-sMyyVW-LEHQqs4Nmnxp7EfkrRf9Kn2IKR25duFU3i95yWfciLQMfWPvKCIOkr3DM19hGktZHmDH5M3Ir7~0LcuwA2xDgx9-Hegqi0rI5OGGGapLb9T~H6Yxzeh1mjsqGngnTOawzjjj4LfPkbkMiGkInt8zg0tL7sdIfZNo4oq5A5BTdvHPUTeDpAlkNMJTBN9pHfK9anmG5v6sG6-7ft7SaHJ24dORnFxf0Qj-qXwk7qro5IUt5hzjp9183s1Vp6Yovmg3GVd7qWQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Absence_of_egg_discrimination_in_a_suitable_cuckoo_Cuculus_canorus_host_breeding_away_from_trees","translated_slug":"","page_count":4,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne Moksnes","url":"https://independent.academia.edu/ArneMoksnes"},"attachments":[{"id":45132559,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132559/thumbnails/1.jpg","file_name":"Absence_of_egg_discrimination_in_a_suita20160427-7426-pjqp3e.pdf","download_url":"https://www.academia.edu/attachments/45132559/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Absence_of_egg_discrimination_in_a_suita.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132559/Absence_of_egg_discrimination_in_a_suita20160427-7426-pjqp3e-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DAbsence_of_egg_discrimination_in_a_suita.pdf\u0026Expires=1733267615\u0026Signature=YijlEnbXD-kBRny5AIo~OrtmGNZ97J9-u9EK1kkhVjTROlkzbVacm67FSKT3~nXNSBIZrFA-sMyyVW-LEHQqs4Nmnxp7EfkrRf9Kn2IKR25duFU3i95yWfciLQMfWPvKCIOkr3DM19hGktZHmDH5M3Ir7~0LcuwA2xDgx9-Hegqi0rI5OGGGapLb9T~H6Yxzeh1mjsqGngnTOawzjjj4LfPkbkMiGkInt8zg0tL7sdIfZNo4oq5A5BTdvHPUTeDpAlkNMJTBN9pHfK9anmG5v6sG6-7ft7SaHJ24dORnFxf0Qj-qXwk7qro5IUt5hzjp9183s1Vp6Yovmg3GVd7qWQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":23773,"name":"Avian Biology","url":"https://www.academia.edu/Documents/in/Avian_Biology"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":524884,"name":"Avian","url":"https://www.academia.edu/Documents/in/Avian"}],"urls":[{"id":4932418,"url":"http://doi.wiley.com/10.1111/j.1600-048X.2010.05103.x"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="13628049"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628049/Does_the_cuckoo_benefit_from_laying_unusually_strong_eggs"><img alt="Research paper thumbnail of Does the cuckoo benefit from laying unusually strong eggs?" class="work-thumbnail" src="https://attachments.academia-assets.com/45132571/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628049/Does_the_cuckoo_benefit_from_laying_unusually_strong_eggs">Does the cuckoo benefit from laying unusually strong eggs?</a></div><div class="wp-workCard_item"><span>Animal Behaviour</span><span>, 2008</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5464405ea761980e239b820411b92218" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132571,"asset_id":13628049,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/45132571/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="13628049"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="13628049"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 13628049; 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dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "5464405ea761980e239b820411b92218" } } $('.js-work-strip[data-work-id=13628049]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":13628049,"title":"Does the cuckoo benefit from laying unusually strong eggs?","translated_title":"","metadata":{"ai_title_tag":"Cuckoo Eggshell Strength and Host Acceptance: A Study","grobid_abstract":"Brood-parasitic birds such as cuckoos and cowbirds lay eggs with unusual by strong shells. Three main hypotheses have been proposed to explain the adaptive significance of this trait. The present study focused on the puncture resistance hypothesis and tested its critical prediction that increased eggshell strength enhances the probability that the parasitic egg is accepted by the host. To address the problem, we experimentally parasitized marsh warbler, Acrocephalus palustris, nests with three types of real eggs having similar size but differing in eggshell strength and/or mimicry: (1) great reed warbler, Acrocephalus arundinaceus, eggs painted to be nonmimetic; (2) common cuckoo, Cuculus canorus, eggs painted in the same way; and (3) unmanipulated cuckoo eggs. When we controlled for mimicry, ejection of strong-shelled (cuckoo) eggs was considerably more costly than ejection of weak-shelled (great reed warbler) eggs. However, nonmimetic cuckoo eggs were not more likely to be accepted than nonmimetic great reed warbler eggs, suggesting no effect of eggshell strength alone on rejection decisions. Mimetic cuckoo eggs were accepted more often than the eggs painted to be nonmimetic suggesting that mimicry primarily determines the probability of rejection. Thus, we found no support for the puncture resistance hypothesis in marsh warblers, which is a host with well-developed defence mechanisms against cuckoo parasitism.","publication_date":{"day":null,"month":null,"year":2008,"errors":{}},"publication_name":"Animal Behaviour","grobid_abstract_attachment_id":45132571},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628049/Does_the_cuckoo_benefit_from_laying_unusually_strong_eggs","translated_internal_url":"","created_at":"2015-07-04T10:45:37.263-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252252,"work_id":13628049,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"Does the cuckoo benefit from laying unusually strong eggs?"},{"id":2252328,"work_id":13628049,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":490621,"email":"a***v@bio.ntnu.no","display_order":4194304,"name":"Anton Antonov","title":"Does the cuckoo benefit from laying unusually strong eggs?"}],"downloadable_attachments":[{"id":45132571,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132571/thumbnails/1.jpg","file_name":"Does_the_cuckoo_benefit_from_laying_unus20160427-2812-1pkoyhh.pdf","download_url":"https://www.academia.edu/attachments/45132571/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Does_the_cuckoo_benefit_from_laying_unus.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132571/Does_the_cuckoo_benefit_from_laying_unus20160427-2812-1pkoyhh-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DDoes_the_cuckoo_benefit_from_laying_unus.pdf\u0026Expires=1733267615\u0026Signature=MQ-6bFkt3pXF4Wu2BTwjsj0OM5TydmJcRt8fmFpmyMK4WvvTIVy0xzhuw-9U9WZuBfZQa2PajQrzchrG-e7FE4xo2LhkPz74kNA9t1xPyTymAGb4mkh4c7RCGAp-FXHb~3zZA~XmNF71t6dsxL6vJs96k54vS3MpLZuWiEeB4nIJragQwmlEc-lt~0E5lMEkp5WO3N9hmTRRWJVt0ftHS~-Zp-4KL76F-6T469Qgmop9QqJHP~w~fY~9Boa~1ogWGj3Ob0z2euu~H8NE22dEtWKbLpcf~kZ7pc058x2nMt-x3lKme~fNPKW1Z39F965gLnHaRNidRwT432~q7tdriw__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Does_the_cuckoo_benefit_from_laying_unusually_strong_eggs","translated_slug":"","page_count":8,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne Moksnes","url":"https://independent.academia.edu/ArneMoksnes"},"attachments":[{"id":45132571,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132571/thumbnails/1.jpg","file_name":"Does_the_cuckoo_benefit_from_laying_unus20160427-2812-1pkoyhh.pdf","download_url":"https://www.academia.edu/attachments/45132571/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Does_the_cuckoo_benefit_from_laying_unus.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132571/Does_the_cuckoo_benefit_from_laying_unus20160427-2812-1pkoyhh-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DDoes_the_cuckoo_benefit_from_laying_unus.pdf\u0026Expires=1733267615\u0026Signature=MQ-6bFkt3pXF4Wu2BTwjsj0OM5TydmJcRt8fmFpmyMK4WvvTIVy0xzhuw-9U9WZuBfZQa2PajQrzchrG-e7FE4xo2LhkPz74kNA9t1xPyTymAGb4mkh4c7RCGAp-FXHb~3zZA~XmNF71t6dsxL6vJs96k54vS3MpLZuWiEeB4nIJragQwmlEc-lt~0E5lMEkp5WO3N9hmTRRWJVt0ftHS~-Zp-4KL76F-6T469Qgmop9QqJHP~w~fY~9Boa~1ogWGj3Ob0z2euu~H8NE22dEtWKbLpcf~kZ7pc058x2nMt-x3lKme~fNPKW1Z39F965gLnHaRNidRwT432~q7tdriw__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":22838,"name":"Animal Behaviour","url":"https://www.academia.edu/Documents/in/Animal_Behaviour"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":169623,"name":"Brood Parasitism","url":"https://www.academia.edu/Documents/in/Brood_Parasitism"}],"urls":[{"id":4932417,"url":"http://www.sciencedirect.com/science/article/pii/S0003347208003989"}]}, dispatcherData: dispatcherData }); 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Marsh warblers breed in more diverse and dense herbaceous vegetation than other cuckoo hosts investigated in comparable studies. The ''perch proximity'' hypothesis was supported as parasitized nests were situated closer to trees than non-parasitized ones. Furthermore, demonstrated for the first time in a cuckoo host, tree height was an important predictor of parasitism, with higher trees increasing the parasitism odds ratio. The ''nest exposure'' hypothesis was also supported since parasitized nests had a shorter stand of vegetation in the close vicinity than non-parasitized nests. However, visibility of the nest from the nearest potential cuckoo perch (cuckoo view) was not selected by the model, probably because most nests were well concealed. Laying date, height of nest above ground and the distance from the nest to the nearest edge of the vegetation were not important predictors of parasitism. Though smaller nests tended to be parasitized more frequently than larger ones, nest size only approached significance, making its importance unclear.","publication_date":{"day":null,"month":null,"year":2007,"errors":{}},"publication_name":"Journal of Avian Biology","grobid_abstract_attachment_id":45132567},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628048/Factors_influencing_the_risk_of_common_cuckoo_Cuculus_canorus_parasitism_on_marsh_warblers_Acrocephalus_palustris","translated_internal_url":"","created_at":"2015-07-04T10:45:37.157-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252251,"work_id":13628048,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"Factors influencing the risk of common cuckoo Cuculus canorus parasitism on marsh warblers Acrocephalus palustris"},{"id":2252327,"work_id":13628048,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":490621,"email":"a***v@bio.ntnu.no","display_order":4194304,"name":"Anton Antonov","title":"Factors influencing the risk of common cuckoo Cuculus canorus parasitism on marsh warblers Acrocephalus palustris"}],"downloadable_attachments":[{"id":45132567,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132567/thumbnails/1.jpg","file_name":"Factors_influencing_the_risk_of_Common_C20160427-7419-eod7yw.pdf","download_url":"https://www.academia.edu/attachments/45132567/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Factors_influencing_the_risk_of_common_c.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132567/Factors_influencing_the_risk_of_Common_C20160427-7419-eod7yw-libre.pdf?1461761889=\u0026response-content-disposition=attachment%3B+filename%3DFactors_influencing_the_risk_of_common_c.pdf\u0026Expires=1733267615\u0026Signature=O~1aBRIv8qyTCqCZpUjdx9HOJPPAR1aomPe2eYBrOzq7yRnyeLKCfAhy1jTzZbuIJHICNEjikpkm6Sm9U8cmAPkoj5bYq7rddlxoBhCOQtBvsHa9JwNga4Yu4orn1erm7loKBB5Ogf3U7RPuH9WN8VaK3lC-JESd4OisZ7FX-UxYuAMSYkENbNRtHV7ivRSxKDR6hd2I0rQkWlNaMbm5NX0cSjucmH-5mjFF7YzclyoaesYsrojUkDO0ihn3CTkH0SkXQgmHhKWnrRBLVhjnGLIQ1HV0FI~0ef1zKUFEnOdmJ3t6ADn03YApLnDz5RZ41A22dlfntnx8SjThNUohMQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Factors_influencing_the_risk_of_common_cuckoo_Cuculus_canorus_parasitism_on_marsh_warblers_Acrocephalus_palustris","translated_slug":"","page_count":4,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne Moksnes","url":"https://independent.academia.edu/ArneMoksnes"},"attachments":[{"id":45132567,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132567/thumbnails/1.jpg","file_name":"Factors_influencing_the_risk_of_Common_C20160427-7419-eod7yw.pdf","download_url":"https://www.academia.edu/attachments/45132567/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Factors_influencing_the_risk_of_common_c.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132567/Factors_influencing_the_risk_of_Common_C20160427-7419-eod7yw-libre.pdf?1461761889=\u0026response-content-disposition=attachment%3B+filename%3DFactors_influencing_the_risk_of_common_c.pdf\u0026Expires=1733267615\u0026Signature=O~1aBRIv8qyTCqCZpUjdx9HOJPPAR1aomPe2eYBrOzq7yRnyeLKCfAhy1jTzZbuIJHICNEjikpkm6Sm9U8cmAPkoj5bYq7rddlxoBhCOQtBvsHa9JwNga4Yu4orn1erm7loKBB5Ogf3U7RPuH9WN8VaK3lC-JESd4OisZ7FX-UxYuAMSYkENbNRtHV7ivRSxKDR6hd2I0rQkWlNaMbm5NX0cSjucmH-5mjFF7YzclyoaesYsrojUkDO0ihn3CTkH0SkXQgmHhKWnrRBLVhjnGLIQ1HV0FI~0ef1zKUFEnOdmJ3t6ADn03YApLnDz5RZ41A22dlfntnx8SjThNUohMQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":23773,"name":"Avian Biology","url":"https://www.academia.edu/Documents/in/Avian_Biology"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"}],"urls":[{"id":4932416,"url":"http://www.blackwell-synergy.com/doi/abs/10.1111/j.2007.0908-8857.03813.x"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> </div><div class="profile--tab_content_container js-tab-pane tab-pane" data-section-id="3151794" id="papers"><div class="js-work-strip profile--work_container" data-work-id="89516306"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/89516306/Habitat_and_space_use_of_European_cuckoo_females_during_the_egg_laying_period"><img alt="Research paper thumbnail of Habitat and space use of European cuckoo females during the egg laying period" class="work-thumbnail" src="https://attachments.academia-assets.com/93308224/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/89516306/Habitat_and_space_use_of_European_cuckoo_females_during_the_egg_laying_period">Habitat and space use of European cuckoo females during the egg laying period</a></div><div class="wp-workCard_item"><span>Behaviour</span><span>, 2004</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">In brood parasites, knowledge of spacing behaviour, habitat use and territoriality may reveal cue...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">In brood parasites, knowledge of spacing behaviour, habitat use and territoriality may reveal cues about how parasites find and use their hosts. To study the use of space and habitat of European cuckoos, Cuculus canorus, we radio-tagged 16 females during four consecutive reproductive seasons. We hypothesized that during the laying period cuckoo females should (1) use habitats selectively, and (2) attempt to monopolize potential egg laying areas to reduce competition for host nests. Our data are consistent with the first hypothesis: the use of pond edges compared to forest and transitional habitats was significantly greater than expected from the habitat availability in the total area and within individual female home ranges. All 26 directly observed egg layings and 27 nest visits without laying occurred at pond edges in nests of Acrocephalus spp. Females spent significantly more time at pond edges on egglaying days than on non-laying days. The second hypothesis was not supported: fe...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="7d8756f64fce98cf1f730ea0f43bfcb8" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":93308224,"asset_id":89516306,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/93308224/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="89516306"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="89516306"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 89516306; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=89516306]").text(description); $(".js-view-count[data-work-id=89516306]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 89516306; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='89516306']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 89516306, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "7d8756f64fce98cf1f730ea0f43bfcb8" } } $('.js-work-strip[data-work-id=89516306]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":89516306,"title":"Habitat and space use of European cuckoo females during the egg laying period","translated_title":"","metadata":{"abstract":"In brood parasites, knowledge of spacing behaviour, habitat use and territoriality may reveal cues about how parasites find and use their hosts. To study the use of space and habitat of European cuckoos, Cuculus canorus, we radio-tagged 16 females during four consecutive reproductive seasons. We hypothesized that during the laying period cuckoo females should (1) use habitats selectively, and (2) attempt to monopolize potential egg laying areas to reduce competition for host nests. Our data are consistent with the first hypothesis: the use of pond edges compared to forest and transitional habitats was significantly greater than expected from the habitat availability in the total area and within individual female home ranges. All 26 directly observed egg layings and 27 nest visits without laying occurred at pond edges in nests of Acrocephalus spp. Females spent significantly more time at pond edges on egglaying days than on non-laying days. The second hypothesis was not supported: fe...","publisher":"Brill","publication_date":{"day":null,"month":null,"year":2004,"errors":{}},"publication_name":"Behaviour"},"translated_abstract":"In brood parasites, knowledge of spacing behaviour, habitat use and territoriality may reveal cues about how parasites find and use their hosts. To study the use of space and habitat of European cuckoos, Cuculus canorus, we radio-tagged 16 females during four consecutive reproductive seasons. We hypothesized that during the laying period cuckoo females should (1) use habitats selectively, and (2) attempt to monopolize potential egg laying areas to reduce competition for host nests. Our data are consistent with the first hypothesis: the use of pond edges compared to forest and transitional habitats was significantly greater than expected from the habitat availability in the total area and within individual female home ranges. All 26 directly observed egg layings and 27 nest visits without laying occurred at pond edges in nests of Acrocephalus spp. Females spent significantly more time at pond edges on egglaying days than on non-laying days. The second hypothesis was not supported: fe...","internal_url":"https://www.academia.edu/89516306/Habitat_and_space_use_of_European_cuckoo_females_during_the_egg_laying_period","translated_internal_url":"","created_at":"2022-10-30T02:57:03.697-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":93308224,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/93308224/thumbnails/1.jpg","file_name":"5f0a9c1fc9ec426cd6859673fd44f9c5ce61.pdf","download_url":"https://www.academia.edu/attachments/93308224/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Habitat_and_space_use_of_European_cuckoo.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/93308224/5f0a9c1fc9ec426cd6859673fd44f9c5ce61-libre.pdf?1667124378=\u0026response-content-disposition=attachment%3B+filename%3DHabitat_and_space_use_of_European_cuckoo.pdf\u0026Expires=1733267613\u0026Signature=WJ292RIhtEmlHd5uDuTudhtDSvz5Vx0HnxDBOK0VnJ0pnK6NeCpx0tNhOADw~1cKpiANLoP2UJEdt-npxT9otzoanic405U~LphHLOSG3ma6Kaf7WlZMG1rlpoxCDo7KtQqUt3I1XnWu6tZh-TGL7QGaGUtAR49SpqrYc6-W2Ijlrb4DnsctdR7MK4tKbUAi317ey9~XCM4jiOjV57QH~uOfntvuX2d4AOKuDedukVc4tMmWmeu2FYArhZ1ksheBXIphrQyCDffbw75Om~UaVM6eytbLL1JIKsUpY7Uvio90SmAcYzpiOX7QFqj7uHUUF8~Pn53dNVUw99tPOlBeDQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Habitat_and_space_use_of_European_cuckoo_females_during_the_egg_laying_period","translated_slug":"","page_count":18,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne Moksnes","url":"https://independent.academia.edu/ArneMoksnes"},"attachments":[{"id":93308224,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/93308224/thumbnails/1.jpg","file_name":"5f0a9c1fc9ec426cd6859673fd44f9c5ce61.pdf","download_url":"https://www.academia.edu/attachments/93308224/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Habitat_and_space_use_of_European_cuckoo.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/93308224/5f0a9c1fc9ec426cd6859673fd44f9c5ce61-libre.pdf?1667124378=\u0026response-content-disposition=attachment%3B+filename%3DHabitat_and_space_use_of_European_cuckoo.pdf\u0026Expires=1733267614\u0026Signature=RPWXhdnte8t7k8z--t2FL1YqiUpLHMorvjhV6eR~wlM2CRMK8XoP62yU3fnpc74P6GP29BnoNKioHg2SptvTWCgpPqNO5yeeyFMtc6FVtXKtomeHhSYJ956b-x~U1-aL9SSTNht6CWFidLIqWKInC5OMZqBIYBt-mGsqx9N4PiyzaCmqSwcZ6hLZWzZoKa6rR6qjzwIIqjnRcafasxsBCkWwAHcC0WGcMbK3ryd7Xbk1LNC8BU4iyHDUAc3aZ3RVykW0zk2fekzBrsNrP4e7JImdO~iiTduN7s0j7FhO0wx2tizoCmLmowBWj-DZ3D8hTx8G761o5Ih3b~jvCnJ56w__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":155,"name":"Evolutionary Biology","url":"https://www.academia.edu/Documents/in/Evolutionary_Biology"},{"id":173,"name":"Zoology","url":"https://www.academia.edu/Documents/in/Zoology"},{"id":7710,"name":"Biology","url":"https://www.academia.edu/Documents/in/Biology"},{"id":9846,"name":"Ecology","url":"https://www.academia.edu/Documents/in/Ecology"},{"id":46474,"name":"Territoriality","url":"https://www.academia.edu/Documents/in/Territoriality"},{"id":57433,"name":"Seasonality","url":"https://www.academia.edu/Documents/in/Seasonality"},{"id":72667,"name":"Behaviour","url":"https://www.academia.edu/Documents/in/Behaviour"},{"id":85707,"name":"Habitat","url":"https://www.academia.edu/Documents/in/Habitat"},{"id":129557,"name":"Habitat Selection","url":"https://www.academia.edu/Documents/in/Habitat_Selection"},{"id":147838,"name":"Habitat Use","url":"https://www.academia.edu/Documents/in/Habitat_Use"},{"id":169623,"name":"Brood Parasitism","url":"https://www.academia.edu/Documents/in/Brood_Parasitism"},{"id":244027,"name":"Space Use","url":"https://www.academia.edu/Documents/in/Space_Use"},{"id":276323,"name":"Egg Laying","url":"https://www.academia.edu/Documents/in/Egg_Laying"},{"id":304168,"name":"Home Range","url":"https://www.academia.edu/Documents/in/Home_Range"},{"id":419697,"name":"Cuckoo","url":"https://www.academia.edu/Documents/in/Cuckoo"}],"urls":[{"id":25302460,"url":"https://brill.com/view/journals/beh/141/7/article-p881_6.xml"}]}, dispatcherData: dispatcherData }); 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Several parrotbill species of the genus Paradoxornis are parasitized by the  common cuckoo Cuculus canorus and clear polymorphism in egg phenotype is  observed. In this article, we develop a population genetics model in order to identify  key parameters that control maintenance of egg polymorphism. The model analyses  show that egg polymorphism can be maintained either statically as an equilibrium or  dynamically with frequency oscillations depending on the sensitivity of the host against  unlike eggs and how the parasite targets host nests with specific egg phenotypes. Based  on the model we discuss egg polymorphism observed in parrotbills and other host  species parasitized by the cuckoo. We suggest the possibility that frequencies of egg  phenotypes oscillate and we appeal for monitoring of cuckoo-host interactions over a  large spatiotemporal scale.","publication_date":{"day":null,"month":null,"year":2012,"errors":{}},"grobid_abstract_attachment_id":68477771},"translated_abstract":null,"internal_url":"https://www.academia.edu/50529857/Modelling_the_maintenance_of_egg_polymorphism_in_avian_brood_parasites_and_their_hosts","translated_internal_url":"","created_at":"2021-08-01T10:55:36.256-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[],"downloadable_attachments":[{"id":68477771,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/68477771/thumbnails/1.jpg","file_name":"Liang_et_al_JEB_submitted.pdf","download_url":"https://www.academia.edu/attachments/68477771/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Modelling_the_maintenance_of_egg_polymor.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/68477771/Liang_et_al_JEB_submitted-libre.pdf?1627840817=\u0026response-content-disposition=attachment%3B+filename%3DModelling_the_maintenance_of_egg_polymor.pdf\u0026Expires=1733267614\u0026Signature=M09pmcDH1PTia78hmrXx70ZjSLmwck53agrPhvl-9mTKh~43bjS~2LsA30-pIB1B7jNESq7SjQCLvxkwaZqaUEZy4~dMJWOjk0eMWZJ35m3isKH5LxwvLa4GVTMET-V2lwEQT05Db2lwmKKErCKef8i-oV-Ii34ls8ymaGnpSm2braNrBGzVbQ~Ucs-5f7if~LZ5OTvp2EKLzR8AUQvxuj25c4Q-aIZsgJkNBT0zABnvYKYqUNWO86VLMyYTnaErWRVugUYi1VfkkiFoE4TYe7sLMCg32Rj1zf0efpRjonSxAx1gFFEWPadhIPVTzjMhf967lc0U2O0UzuDhDQ20sQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Modelling_the_maintenance_of_egg_polymorphism_in_avian_brood_parasites_and_their_hosts","translated_slug":"","page_count":53,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne 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To test the hypothesis that spring environmental conditions (i.e., temperature and rainfall) may affect bird egg pigmentation, we measured by spectrophotometry and photography egg coloration and spottiness on reed warbler (Acrocephalus scirpaceus L.) clutches parasitized by the common cuckoo (Cuculus canorus L.) collected over a period of 24 years and preserved in the Zoological Museum, Copenhagen, Denmark. In addition, we investigated whether spring environmental conditions may influence the coevolutionary relationship between the cuckoo and its host via changes in cuckoo-host egg matching. Generalized mixed models revealed that reed warbler eggs were more brilliant in those springs with a higher rainfall and tended to be bluer and greener in springs with a lower relative temperature. On the other hand, cuckoo eggs were bluer and greener in springs with a higher rainfall. Cuckoo-host egg matching in blue-greenness and spottiness was better in springs with a higher rainfall. These results provide support for the existence of an environmental component on bird egg coloration and suggest that environmental factors may potentially affect the outcome of important features of the arms race between cuckoos and reed warblers.","grobid_abstract_attachment_id":38091581},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628065/Avil%C3%A9s_et_al_2007_BES_journal","translated_internal_url":"","created_at":"2015-07-04T10:45:38.972-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252176,"work_id":13628065,"tagging_user_id":32791142,"tagged_user_id":249070396,"co_author_invite_id":519855,"email":"j***s@eeza.csic.es","affiliation":"CSIC (Consejo Superior de Investigaciones Científicas-Spanish National Research Council)","display_order":0,"name":"Jesús M. 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Coevolutionary interactions between brood parasites and their hosts provide an ideal opportunity for studying animal cognition because egg recognition and rejection are some of the most important adaptations evolved in hosts to counter brood parasitism. The cognitive mechanisms hosts employ in egg recognition have received substantial interest, with 2 main hypotheses being put forward: 1) true egg recognition based on a knowledge of the hosts' own egg appearance (template that is innate and/or learned) and 2) discordancy by which individuals simply recognize eggs that are in minority as parasitic. These hypotheses are not necessarily mutually exclusive. We conducted egg experiments in the ashy-throated parrotbill (Paradoxornis alphonsianus), a common cuckoo (Cuculus canorus) host that lays immaculate, polymorphic eggs, and we obtained support for both hypotheses. Parrotbills use the presence of own eggs as a cue for recognizing parasitic eggs, supporting true recognition, but without the presence of own eggs as a template they failed to recognize the parasitic egg. Furthermore, some individuals erroneously rejected their own eggs when in minority, supporting recognition by discordancy. 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Aims To assess if an intruder near the nest influences the behaviour of the Cuckoo host. Methods Host responses to Cuckoo, control Pigeon dummies and human intruder were observed. Host behaviour at 71 nests was video-recorded for 30 minutes at four experimental groups of nests: Cuckoo dummy, Cuckoo dummy + Cuckoo egg, Pigeon dummy, human intruder. Results Reed Warblers did not respond differently to the Cuckoo and the control species. The experimental procedure had no significant effect on the behaviour of hosts during the study period. We were unable to find any differences in the time spent at the nest, clutch inspection behaviour and nest defence behaviour between morning and afternoon experimental groups. Our results do not support the hypothesis that afternoon laying by the Cuckoo is maintained by a selection pressure from the host. We observed no ejection or egg-pecking during the 30-min period after the experimental parasitism. Conclusions Low aggression and non-specificity of host responses in our study area are in line with the fact that the Reed Warbler is an intermediate rejecter of Cuckoo eggs as expected from the spatial habitat structure hypothesis.","publication_date":{"day":null,"month":null,"year":2004,"errors":{}},"publication_name":"Bird 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a regularly parasitized population do not recognize Cuckoo Cuculus canorus as a special enemy and do not change their behaviour at nest immed..."},{"id":2252261,"work_id":13628061,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":4194304,"name":"Eivin Røskaft","title":"Nest defence, enemy recognition and nest inspection behaviour of experimentally parasitized Reed Warblers Acrocephalus scirpaceus: Capsule Reed Warblers in a regularly parasitized population do not recognize Cuckoo Cuculus canorus as a special enemy and do not change their behaviour at nest 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href="https://www.academia.edu/13628060/The_spatial_habitat_structure_of_host_populations_explains_the_pattern_of_rejection_behavior_in_hosts_and_parasitic_adaptations_in">The spatial habitat structure of host populations explains the pattern of rejection behavior in hosts and parasitic adaptations in</a></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">... Soler, M, Møller, AP, 1990. Duration of sympatry and coevolution between great spotted cuckoo...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">... Soler, M, Møller, AP, 1990. Duration of sympatry and coevolution between great spotted cuckoo and its magpie host. Nature, Lond 343: 748-750. Page 146. ... 23 1990 Magne Husby Dr. scient. Breeding strategies in birds: Experiments with the Magpie Pica pica. ...</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="13628060"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="13628060"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 13628060; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=13628060]").text(description); $(".js-view-count[data-work-id=13628060]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 13628060; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='13628060']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 13628060, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (false){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "-1" } } $('.js-work-strip[data-work-id=13628060]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":13628060,"title":"The spatial habitat structure of host populations explains the pattern of rejection behavior in hosts and parasitic adaptations in","translated_title":"","metadata":{"abstract":"... Soler, M, Møller, AP, 1990. Duration of sympatry and coevolution between great spotted cuckoo and its magpie host. Nature, Lond 343: 748-750. Page 146. ... 23 1990 Magne Husby Dr. scient. Breeding strategies in birds: Experiments with the Magpie Pica pica. ...","publication_date":{"day":null,"month":null,"year":2000,"errors":{}}},"translated_abstract":"... Soler, M, Møller, AP, 1990. Duration of sympatry and coevolution between great spotted cuckoo and its magpie host. Nature, Lond 343: 748-750. Page 146. ... 23 1990 Magne Husby Dr. scient. Breeding strategies in birds: Experiments with the Magpie Pica pica. ...","internal_url":"https://www.academia.edu/13628060/The_spatial_habitat_structure_of_host_populations_explains_the_pattern_of_rejection_behavior_in_hosts_and_parasitic_adaptations_in","translated_internal_url":"","created_at":"2015-07-04T10:45:38.480-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252260,"work_id":13628060,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"The spatial habitat structure of host populations explains the pattern of rejection behavior in hosts and parasitic adaptations in"}],"downloadable_attachments":[],"slug":"The_spatial_habitat_structure_of_host_populations_explains_the_pattern_of_rejection_behavior_in_hosts_and_parasitic_adaptations_in","translated_slug":"","page_count":null,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne Moksnes","url":"https://independent.academia.edu/ArneMoksnes"},"attachments":[],"research_interests":[{"id":1031677,"name":"Habitat Structure","url":"https://www.academia.edu/Documents/in/Habitat_Structure"}],"urls":[]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="13628059"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628059/Egg_Mimicry_in_Cuckoos_Parasitizing_Four_Sympatric_Species_of_Acrocephalus_Warblers"><img alt="Research paper thumbnail of Egg Mimicry in Cuckoos Parasitizing Four Sympatric Species of Acrocephalus Warblers" class="work-thumbnail" src="https://a.academia-assets.com/images/blank-paper.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628059/Egg_Mimicry_in_Cuckoos_Parasitizing_Four_Sympatric_Species_of_Acrocephalus_Warblers">Egg Mimicry in Cuckoos Parasitizing Four Sympatric Species of Acrocephalus Warblers</a></div><div class="wp-workCard_item"><span>Condor</span><span>, 2001</span></div><div class="wp-workCard_item"><span class="js-work-more-abstract-truncated">... Karel Janko, Oddmund Kleven, Jarmila Jemelíková, Dorte Meilvang, Oldrich Mikulica, Cecilie Mø...</span><a class="js-work-more-abstract" data-broccoli-component="work_strip.more_abstract" data-click-track="profile-work-strip-more-abstract" href="javascript:;"><span> more </span><span><i class="fa fa-caret-down"></i></span></a><span class="js-work-more-abstract-untruncated hidden">... Karel Janko, Oddmund Kleven, Jarmila Jemelíková, Dorte Meilvang, Oldrich Mikulica, Cecilie Mørk, Per H. Olsen, Barbara and Michael Taborsky, and Yvonne Teuschl for ... CrossRef, CSA. Øien, IJ, A. Moksnes, E. Røskaft, E. Edvardsen, M. Honza, O. Kleven, and G. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="13628058"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628058/THE_IMPORTANCE_OF_CLUTCH_CHARACTERISTICS_AND_LEARNING_FOR_ANTIPARASITE_ADAPTATIONS_IN_HOSTS_OF_AVIAN_BROOD_PARASITES"><img alt="Research paper thumbnail of THE IMPORTANCE OF CLUTCH CHARACTERISTICS AND LEARNING FOR ANTIPARASITE ADAPTATIONS IN HOSTS OF AVIAN BROOD PARASITES" class="work-thumbnail" src="https://attachments.academia-assets.com/45132564/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628058/THE_IMPORTANCE_OF_CLUTCH_CHARACTERISTICS_AND_LEARNING_FOR_ANTIPARASITE_ADAPTATIONS_IN_HOSTS_OF_AVIAN_BROOD_PARASITES">THE IMPORTANCE OF CLUTCH CHARACTERISTICS AND LEARNING FOR ANTIPARASITE ADAPTATIONS IN HOSTS OF AVIAN BROOD PARASITES</a></div><div class="wp-workCard_item"><span>Evolution</span><span>, 2007</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="f79bf0ccbe6bda8311793508341f826f" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132564,"asset_id":13628058,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/45132564/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="13628058"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="13628058"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 13628058; 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In this article, we develop a model that can be used to predict host egg rejection behavior in brood parasite-host systems in general, by considering both intraand interclutch variation in host egg appearance; clutch characteristics that may be important in calculating the fitness of individuals adopting rejecter or acceptor strategies. In addition, we consider the importance of learning the appearance of own eggs during the first breeding attempt and host probability of survival between breeding seasons on evolution of rejection behavior. Based on this model we can predict at which level of parasitism fitness of rejecter individuals is higher than that of acceptor individuals and vice versa. The model analyses show that variation in egg appearance can be a key factor for the evolution of host defense against parasitism. In more detail, analyses show that we should expect to find a prolonged learning period only in hosts that have a high intraclutch variation in egg appearance, because such hosts may potentially experience high costs in terms of recognition errors. Furthermore, learning is in general more adaptive in parasite-host systems in which hosts do have some reproductive success even when parasitized, and when parasitism rates are moderate. 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Behavior","url":"https://www.academia.edu/Documents/in/Nesting_Behavior"}],"urls":[{"id":4932425,"url":"http://www.blackwell-synergy.com/doi/abs/10.1111/j.1558-5646.2007.00176.x"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="13628057"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628057/The_enigma_of_imperfect_adaptations_in_hosts_of_avian_brood_parasites"><img alt="Research paper thumbnail of The enigma of imperfect adaptations in hosts of avian brood parasites" class="work-thumbnail" src="https://attachments.academia-assets.com/45132552/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a 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The paper investigates the costs associated with reproduction and survival in host species when responding to parasitism. Analyzing existing literature, it highlights trade-offs in reproductive strategies and suggests areas for future research, particularly concerning the long-term effects of brood parasitism on host fitness.","publication_date":{"day":null,"month":null,"year":2005,"errors":{}},"publication_name":"Ornithological Science"},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628057/The_enigma_of_imperfect_adaptations_in_hosts_of_avian_brood_parasites","translated_internal_url":"","created_at":"2015-07-04T10:45:38.142-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252298,"work_id":13628057,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":116640,"email":"b***e@bio.ntnu.no","display_order":0,"name":"Bård Stokke","title":"The enigma of imperfect adaptations in hosts of avian brood parasites"},{"id":2252394,"work_id":13628057,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":623198,"email":"b***e@bio.ntnu","display_order":4194304,"name":"Bård Stokke","title":"The enigma of imperfect adaptations in hosts of avian brood parasites"}],"downloadable_attachments":[{"id":45132552,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132552/thumbnails/1.jpg","file_name":"The_enigma_of_imperfect_adaptations_in_h20160427-486-coip9q.pdf","download_url":"https://www.academia.edu/attachments/45132552/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_enigma_of_imperfect_adaptations_in_h.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132552/The_enigma_of_imperfect_adaptations_in_h20160427-486-coip9q-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DThe_enigma_of_imperfect_adaptations_in_h.pdf\u0026Expires=1733267614\u0026Signature=YkSvHu6n~4IUZ8Dcq-pr-~LU7cLKHSEOHXNEspqWarXYJDuTMkAFaGw-pDw19lawVYZx-bf7pTo2~R6Wq3DjYhGI0-jFtHKB3Yh-UDyvbPjvSrIeLCJV4MDUKSEJUO74XzUSkmD0nmm~sipzEWM5uiIyN~8IUQ76c-1psE8qNmnBh1D6xIFRZaMreprz4hvOGndCZAtzZJIFUY1U0o1yE-QgcTncWAEZoTcJANp~T78GWL~712AWfcaqc6Dg6tpUDpxrSf-8m0vDN7PN~OgfVxUpwIYi4ABQGW8jIWGXc0DZfqzpev1YZ-jq5gn-EjnKJ1wA-lG440qH0auVDtoQbQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"The_enigma_of_imperfect_adaptations_in_hosts_of_avian_brood_parasites","translated_slug":"","page_count":13,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne Moksnes","url":"https://independent.academia.edu/ArneMoksnes"},"attachments":[{"id":45132552,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132552/thumbnails/1.jpg","file_name":"The_enigma_of_imperfect_adaptations_in_h20160427-486-coip9q.pdf","download_url":"https://www.academia.edu/attachments/45132552/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"The_enigma_of_imperfect_adaptations_in_h.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132552/The_enigma_of_imperfect_adaptations_in_h20160427-486-coip9q-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DThe_enigma_of_imperfect_adaptations_in_h.pdf\u0026Expires=1733267614\u0026Signature=YkSvHu6n~4IUZ8Dcq-pr-~LU7cLKHSEOHXNEspqWarXYJDuTMkAFaGw-pDw19lawVYZx-bf7pTo2~R6Wq3DjYhGI0-jFtHKB3Yh-UDyvbPjvSrIeLCJV4MDUKSEJUO74XzUSkmD0nmm~sipzEWM5uiIyN~8IUQ76c-1psE8qNmnBh1D6xIFRZaMreprz4hvOGndCZAtzZJIFUY1U0o1yE-QgcTncWAEZoTcJANp~T78GWL~712AWfcaqc6Dg6tpUDpxrSf-8m0vDN7PN~OgfVxUpwIYi4ABQGW8jIWGXc0DZfqzpev1YZ-jq5gn-EjnKJ1wA-lG440qH0auVDtoQbQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":4304,"name":"Coevolution","url":"https://www.academia.edu/Documents/in/Coevolution"},{"id":169623,"name":"Brood Parasitism","url":"https://www.academia.edu/Documents/in/Brood_Parasitism"}],"urls":[{"id":4932424,"url":"http://www.bioone.org/doi/abs/10.2326/osj.4.17"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="13628056"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628056/Costs_associated_with_recognition_and_rejection_of_parasitic_eggs_in_two_European_passerines"><img alt="Research paper thumbnail of Costs associated with recognition and rejection of parasitic eggs in two European passerines" class="work-thumbnail" src="https://attachments.academia-assets.com/45132553/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628056/Costs_associated_with_recognition_and_rejection_of_parasitic_eggs_in_two_European_passerines">Costs associated with recognition and rejection of parasitic eggs in two European passerines</a></div><div class="wp-workCard_item wp-workCard--coauthors"><span>by </span><span><a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/ArneMoksnes">Arne Moksnes</a>, <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/GeirRudolfsen">Geir Rudolfsen</a>, and <a class="" data-click-track="profile-work-strip-authors" href="https://independent.academia.edu/MarcelHonza">Marcel Honza</a></span></div><div class="wp-workCard_item"><span>Behaviour</span><span>, 2002</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5aa75094c9dff60bd39155e9a7412fa0" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132553,"asset_id":13628056,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/45132553/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="13628056"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="13628056"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 13628056; window.Academia.workViewCountsFetcher.queue(workId, function (count) { var description = window.$h.commaizeInt(count) + " " + window.$h.pluralize(count, 'View'); $(".js-view-count[data-work-id=13628056]").text(description); $(".js-view-count[data-work-id=13628056]").attr('title', description).tooltip(); }); });</script></span></span><span><span class="percentile-widget hidden"><span class="u-mr2x work-percentile"></span></span><script>$(function () { var workId = 13628056; window.Academia.workPercentilesFetcher.queue(workId, function (percentileText) { var container = $(".js-work-strip[data-work-id='13628056']"); container.find('.work-percentile').text(percentileText.charAt(0).toUpperCase() + percentileText.slice(1)); container.find('.percentile-widget').show(); container.find('.percentile-widget').removeClass('hidden'); }); });</script></span><span><script>$(function() { new Works.PaperRankView({ workId: 13628056, container: "", }); });</script></span></div><div id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); 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Such behaviour seems suboptimal, but has been explained by the existence of opposing selective pressures operating against the evolution of appropriate host defence. Costs associated with rejection and recognition of eggs are central topics in this respect. Here, we report the occurrence of such costs in two European passerines (chaf nches and blackcaps) that are good rejecters of foreign eggs, even though the common cuckoo does not presently use them as hosts. Since high rejection rates are maintained in the absence of parasitism, we predicted that few recognition errors are made by these species. We tested this prediction by monitoring the occurrence of such errors in both experimentally parasitised and non-parasitised host clutches. We found support for the prediction, as our results show that recognition errors are at best rare events in these two species. We discuss the role of intraspeci c brood parasitism as well as other explanations for the retention of a high rejection rate in these species. Various studies have reported mixed support for the occurrence of recognition errors among cuckoo hosts, and we consider other explanations for the existence of both acceptors and rejecters of foreign eggs in host populations.","publication_date":{"day":null,"month":null,"year":2002,"errors":{}},"publication_name":"Behaviour","grobid_abstract_attachment_id":45132553},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628056/Costs_associated_with_recognition_and_rejection_of_parasitic_eggs_in_two_European_passerines","translated_internal_url":"","created_at":"2015-07-04T10:45:38.026-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252194,"work_id":13628056,"tagging_user_id":32791142,"tagged_user_id":32954469,"co_author_invite_id":623192,"email":"g***n@uit.no","display_order":0,"name":"Geir Rudolfsen","title":"Costs associated with 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Survival of Reed Warbler Acrocephalus scirpaceus clutches in relation to nest position" class="work-thumbnail" src="https://attachments.academia-assets.com/45132713/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628055/Survival_of_Reed_Warbler_Acrocephalus_scirpaceus_clutches_in_relation_to_nest_position">Survival of Reed Warbler Acrocephalus scirpaceus clutches in relation to nest position</a></div><div class="wp-workCard_item"><span>Bird Study</span><span>, 1998</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="2689dcb0f68434a1ea38289d20ec63ee" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" 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id="work-strip-premium-row-container"></div></div></div><script> require.config({ waitSeconds: 90 })(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "2689dcb0f68434a1ea38289d20ec63ee" } } $('.js-work-strip[data-work-id=13628055]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":13628055,"title":"Survival of Reed Warbler Acrocephalus scirpaceus clutches in relation to nest position","translated_title":"","metadata":{"ai_title_tag":"Predation Impact on Reed Warbler Nest Survival by Position","grobid_abstract":"P redation is usually the primary cause of nesting failure in land birds 1,2 and has been found to account for 80% of nest losses on average across a wide range of species, habitats and geographic ranges. 1,3-5 Among Bird Study (1998) 45, 104-108","publication_date":{"day":null,"month":null,"year":1998,"errors":{}},"publication_name":"Bird Study","grobid_abstract_attachment_id":45132713},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628055/Survival_of_Reed_Warbler_Acrocephalus_scirpaceus_clutches_in_relation_to_nest_position","translated_internal_url":"","created_at":"2015-07-04T10:45:37.910-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252256,"work_id":13628055,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"Survival of Reed Warbler Acrocephalus scirpaceus clutches in relation to nest 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dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="13628054"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628054/Aggression_to_dummy_cuckoos_by_potential_European_cuckoo_hosts"><img alt="Research paper thumbnail of Aggression to dummy cuckoos by potential European cuckoo hosts" class="work-thumbnail" src="https://attachments.academia-assets.com/45132550/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628054/Aggression_to_dummy_cuckoos_by_potential_European_cuckoo_hosts">Aggression to dummy cuckoos by potential European cuckoo hosts</a></div><div class="wp-workCard_item"><span>Behaviour</span><span>, 2002</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="8bd4386a8ef24ab33b485fa5446e7807" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132550,"asset_id":13628054,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/45132550/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNCw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="13628054"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa 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$('.js-work-strip[data-work-id=13628054]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":13628054,"title":"Aggression to dummy cuckoos by potential European cuckoo hosts","translated_title":"","metadata":{"grobid_abstract":"Aggression directed by 53 potential host species towards a dummy of the parasitic common cuckoo, Cuculus canorus, was tested in relation to their breeding habitat, their suitability as a host and whether they were breeding in sympatry or not with the cuckoo. Host habitats were divided into three categories: (1) always breeding near trees, (2) some populations breeding near trees, others in open areas, and always breeding in open areas. Each species was also placed in one of ve categories according to their suitability as a cuckoo host. Strong support was found for predictions derived from the 'spatial habitat structure hypothesis', which argues that common cuckoos only breed in areas where they have access to vantage points in trees. Thus, species which have some populations breeding near trees and others breeding further from trees have a different cuckoo-host population dynamics than species that always breed near trees, or always breed in open areas. Aggression levels were highest among species regarded as being always suitable as hosts, and species which always breed near trees. However, populations breeding in sympatry with the cuckoo were more aggressive than allopatric populations, indicating the plasticity of aggressive behaviour. Adaptive behaviour in cuckoo hosts can be predicted from the 'spatial habitat structure hypothesis'.","publication_date":{"day":null,"month":null,"year":2002,"errors":{}},"publication_name":"Behaviour","grobid_abstract_attachment_id":45132550},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628054/Aggression_to_dummy_cuckoos_by_potential_European_cuckoo_hosts","translated_internal_url":"","created_at":"2015-07-04T10:45:37.793-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252210,"work_id":13628054,"tagging_user_id":32791142,"tagged_user_id":32592459,"co_author_invite_id":null,"email":"m***t@nhmus.hu","display_order":0,"name":"C. 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However, only a few studies have paid attention to whether specific parts of eggs may be more important than others in rejection decisions by hosts. We hypothesised that the blunt pole in song thrush (Turdus philomelos) eggs possesses important cues for recognition of own eggs because this is the most visible part of the egg in the nest. We examined host response towards conspecific eggs painted blue either at the blunt or sharp poles, and used unpainted conspecific eggs as a control. We found, as predicted, that the experimental eggs painted blue at the blunt poles were rejected significantly more often than the experimental eggs unpainted at this pole. Rejection rates of experimental eggs were higher with increasing differences in number of spots between the two poles of own eggs. Our results confirmed that the essential cues used for egg discrimination in song thrushes are found at the blunt egg pole.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Behaviour","grobid_abstract_attachment_id":45132556},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628053/The_role_of_blunt_egg_pole_characteristics_for_recognition_of_eggs_in_the_song_thrush_Turdus_philomelos_","translated_internal_url":"","created_at":"2015-07-04T10:45:37.678-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252254,"work_id":13628053,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"The role of blunt egg pole characteristics for recognition of eggs in the song thrush ( Turdus philomelos 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href="https://www.academia.edu/13628052/Reviewing_30_years_of_studies_on_the_Common_Cuckoo_accumulated_knowledge_and_future_perspectives"><img alt="Research paper thumbnail of Reviewing 30 years of studies on the Common Cuckoo: accumulated knowledge and future perspectives" class="work-thumbnail" src="https://attachments.academia-assets.com/45132561/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628052/Reviewing_30_years_of_studies_on_the_Common_Cuckoo_accumulated_knowledge_and_future_perspectives">Reviewing 30 years of studies on the Common Cuckoo: accumulated knowledge and future perspectives</a></div><div class="wp-workCard_item"><span>Chinese Birds</span><span>, 2013</span></div><div class="wp-workCard_item wp-workCard--actions"><span 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However, very few species are frequently parasitized. The Cuckoo is divided into several distinct races termed gentes. Females of each gens specialize in parasitizing a particular host species. More than 20 such gentes are recognized in Europe. Each female Cuckoo lays eggs of constant appearance. Most gentes can be separated based on their distinct egg types, which in many cases mimic those of their hosts. Different gentes may occur in sympatry or may be separated geographically. Some gentes may occur in restricted parts of the host's distribution area. These patterns raise some fundamental questions like: Why are some passerine species preferred as hosts while others are not? Why does a host population consist of individuals either accepting or rejecting Cuckoo eggs? Why is there marked variation in egg rejection behavior between various host populations? How distinct and host-specialized are Cuckoo gentes? 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/></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628051/Unusually_high_losses_to_nest_collapse_in_Black_headed_Buntings_Emberiza_melanocephala_nesting_on_a_preferred_plant_species_Capsule_Birds_select_Cotton_Thistles_as_a_nesting_substrate_but_these_plants_provide_an_unstable_support">Unusually high losses to nest collapse in Black-headed Buntings Emberiza melanocephala nesting on a preferred plant species: Capsule Birds select Cotton Thistles as a nesting substrate but these plants provide an unstable support</a></div><div class="wp-workCard_item"><span>Bird Study</span><span>, 2008</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="6857dd5e72f776f444a919f77196ee0e" class="wp-workCard--action" rel="nofollow" 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provide an unstable support","translated_title":"","metadata":{"ai_title_tag":"High Nest Collapse Risk for Black-headed Buntings on Cotton Thistles","grobid_abstract":"Capsule Birds select Cotton Thistles as a nesting substrate but these plants provide an unstable support.","publication_date":{"day":null,"month":null,"year":2008,"errors":{}},"publication_name":"Bird 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class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628050/Absence_of_egg_discrimination_in_a_suitable_cuckoo_Cuculus_canorus_host_breeding_away_from_trees">Absence of egg discrimination in a suitable cuckoo Cuculus canorus host breeding away from trees</a></div><div class="wp-workCard_item"><span>Journal of Avian Biology</span><span>, 2010</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="55165c52555061e03acd7ba4dcc4cd69" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132559,"asset_id":13628050,"asset_type":"Work","button_location":"profile"}" 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})(["https://a.academia-assets.com/assets/wow_profile-f77ea15d77ce96025a6048a514272ad8becbad23c641fc2b3bd6e24ca6ff1932.js","https://a.academia-assets.com/assets/work_edit-ad038b8c047c1a8d4fa01b402d530ff93c45fee2137a149a4a5398bc8ad67560.js"], function() { // from javascript_helper.rb var dispatcherData = {} if (true){ window.WowProfile.dispatcher = window.WowProfile.dispatcher || _.clone(Backbone.Events); dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "55165c52555061e03acd7ba4dcc4cd69" } } $('.js-work-strip[data-work-id=13628050]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":13628050,"title":"Absence of egg discrimination in a suitable cuckoo Cuculus canorus host breeding away from trees","translated_title":"","metadata":{"grobid_abstract":"There is at present considerable variation in the level of antiparasite defences among different host species of avian brood parasites, but in many potential hosts some individuals reject poorly matching parasite eggs. Here we present unique absence of egg discrimination behaviour backed up by a lack of egg recognition abilities in a suitable common cuckoo Cuculus canorus host, the skylark Alauda arvensis. Skylarks did not show any clear rejection response to experimentally added highly non-mimetic foreign eggs in any behavioural context, even before they had started laying or when the whole clutch was exchanged with foreign eggs. This absence of antiparasite defence can be explained by the breeding habitat of larks consisting of largely treeless open landscapes where cuckoos have little access to the nests, thereby eroding the possibility of coevolutionary interactions. Our results are strikingly consistent with the spatial habitat structure hypothesis proposed to explain the occurrence and extent of avian host-parasite co-adaptation.","publication_date":{"day":null,"month":null,"year":2010,"errors":{}},"publication_name":"Journal of Avian Biology","grobid_abstract_attachment_id":45132559},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628050/Absence_of_egg_discrimination_in_a_suitable_cuckoo_Cuculus_canorus_host_breeding_away_from_trees","translated_internal_url":"","created_at":"2015-07-04T10:45:37.371-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252247,"work_id":13628050,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"Absence of egg discrimination in a suitable cuckoo Cuculus canorus host breeding away from trees"},{"id":2252323,"work_id":13628050,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":490621,"email":"a***v@bio.ntnu.no","display_order":4194304,"name":"Anton Antonov","title":"Absence of egg discrimination in a suitable cuckoo Cuculus canorus host breeding away from trees"}],"downloadable_attachments":[{"id":45132559,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132559/thumbnails/1.jpg","file_name":"Absence_of_egg_discrimination_in_a_suita20160427-7426-pjqp3e.pdf","download_url":"https://www.academia.edu/attachments/45132559/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Absence_of_egg_discrimination_in_a_suita.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132559/Absence_of_egg_discrimination_in_a_suita20160427-7426-pjqp3e-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DAbsence_of_egg_discrimination_in_a_suita.pdf\u0026Expires=1733267615\u0026Signature=YijlEnbXD-kBRny5AIo~OrtmGNZ97J9-u9EK1kkhVjTROlkzbVacm67FSKT3~nXNSBIZrFA-sMyyVW-LEHQqs4Nmnxp7EfkrRf9Kn2IKR25duFU3i95yWfciLQMfWPvKCIOkr3DM19hGktZHmDH5M3Ir7~0LcuwA2xDgx9-Hegqi0rI5OGGGapLb9T~H6Yxzeh1mjsqGngnTOawzjjj4LfPkbkMiGkInt8zg0tL7sdIfZNo4oq5A5BTdvHPUTeDpAlkNMJTBN9pHfK9anmG5v6sG6-7ft7SaHJ24dORnFxf0Qj-qXwk7qro5IUt5hzjp9183s1Vp6Yovmg3GVd7qWQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Absence_of_egg_discrimination_in_a_suitable_cuckoo_Cuculus_canorus_host_breeding_away_from_trees","translated_slug":"","page_count":4,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne Moksnes","url":"https://independent.academia.edu/ArneMoksnes"},"attachments":[{"id":45132559,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132559/thumbnails/1.jpg","file_name":"Absence_of_egg_discrimination_in_a_suita20160427-7426-pjqp3e.pdf","download_url":"https://www.academia.edu/attachments/45132559/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Absence_of_egg_discrimination_in_a_suita.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132559/Absence_of_egg_discrimination_in_a_suita20160427-7426-pjqp3e-libre.pdf?1461761890=\u0026response-content-disposition=attachment%3B+filename%3DAbsence_of_egg_discrimination_in_a_suita.pdf\u0026Expires=1733267615\u0026Signature=YijlEnbXD-kBRny5AIo~OrtmGNZ97J9-u9EK1kkhVjTROlkzbVacm67FSKT3~nXNSBIZrFA-sMyyVW-LEHQqs4Nmnxp7EfkrRf9Kn2IKR25duFU3i95yWfciLQMfWPvKCIOkr3DM19hGktZHmDH5M3Ir7~0LcuwA2xDgx9-Hegqi0rI5OGGGapLb9T~H6Yxzeh1mjsqGngnTOawzjjj4LfPkbkMiGkInt8zg0tL7sdIfZNo4oq5A5BTdvHPUTeDpAlkNMJTBN9pHfK9anmG5v6sG6-7ft7SaHJ24dORnFxf0Qj-qXwk7qro5IUt5hzjp9183s1Vp6Yovmg3GVd7qWQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":23773,"name":"Avian Biology","url":"https://www.academia.edu/Documents/in/Avian_Biology"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"},{"id":524884,"name":"Avian","url":"https://www.academia.edu/Documents/in/Avian"}],"urls":[{"id":4932418,"url":"http://doi.wiley.com/10.1111/j.1600-048X.2010.05103.x"}]}, dispatcherData: dispatcherData }); $(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="13628049"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628049/Does_the_cuckoo_benefit_from_laying_unusually_strong_eggs"><img alt="Research paper thumbnail of Does the cuckoo benefit from laying unusually strong eggs?" class="work-thumbnail" src="https://attachments.academia-assets.com/45132571/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628049/Does_the_cuckoo_benefit_from_laying_unusually_strong_eggs">Does the cuckoo benefit from laying unusually strong eggs?</a></div><div class="wp-workCard_item"><span>Animal Behaviour</span><span>, 2008</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="5464405ea761980e239b820411b92218" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132571,"asset_id":13628049,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/45132571/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="13628049"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="13628049"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 13628049; 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dispatcherData = { dispatcher: window.WowProfile.dispatcher, downloadLinkId: "5464405ea761980e239b820411b92218" } } $('.js-work-strip[data-work-id=13628049]').each(function() { if (!$(this).data('initialized')) { new WowProfile.WorkStripView({ el: this, workJSON: {"id":13628049,"title":"Does the cuckoo benefit from laying unusually strong eggs?","translated_title":"","metadata":{"ai_title_tag":"Cuckoo Eggshell Strength and Host Acceptance: A Study","grobid_abstract":"Brood-parasitic birds such as cuckoos and cowbirds lay eggs with unusual by strong shells. Three main hypotheses have been proposed to explain the adaptive significance of this trait. The present study focused on the puncture resistance hypothesis and tested its critical prediction that increased eggshell strength enhances the probability that the parasitic egg is accepted by the host. To address the problem, we experimentally parasitized marsh warbler, Acrocephalus palustris, nests with three types of real eggs having similar size but differing in eggshell strength and/or mimicry: (1) great reed warbler, Acrocephalus arundinaceus, eggs painted to be nonmimetic; (2) common cuckoo, Cuculus canorus, eggs painted in the same way; and (3) unmanipulated cuckoo eggs. When we controlled for mimicry, ejection of strong-shelled (cuckoo) eggs was considerably more costly than ejection of weak-shelled (great reed warbler) eggs. However, nonmimetic cuckoo eggs were not more likely to be accepted than nonmimetic great reed warbler eggs, suggesting no effect of eggshell strength alone on rejection decisions. Mimetic cuckoo eggs were accepted more often than the eggs painted to be nonmimetic suggesting that mimicry primarily determines the probability of rejection. 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$(this).data('initialized', true); } }); $a.trackClickSource(".js-work-strip-work-link", "profile_work_strip") }); </script> <div class="js-work-strip profile--work_container" data-work-id="13628048"><div class="profile--work_thumbnail hidden-xs"><a class="js-work-strip-work-link" data-click-track="profile-work-strip-thumbnail" href="https://www.academia.edu/13628048/Factors_influencing_the_risk_of_common_cuckoo_Cuculus_canorus_parasitism_on_marsh_warblers_Acrocephalus_palustris"><img alt="Research paper thumbnail of Factors influencing the risk of common cuckoo Cuculus canorus parasitism on marsh warblers Acrocephalus palustris" class="work-thumbnail" src="https://attachments.academia-assets.com/45132567/thumbnails/1.jpg" /></a></div><div class="wp-workCard wp-workCard_itemContainer"><div class="wp-workCard_item wp-workCard--title"><a class="js-work-strip-work-link text-gray-darker" data-click-track="profile-work-strip-title" href="https://www.academia.edu/13628048/Factors_influencing_the_risk_of_common_cuckoo_Cuculus_canorus_parasitism_on_marsh_warblers_Acrocephalus_palustris">Factors influencing the risk of common cuckoo Cuculus canorus parasitism on marsh warblers Acrocephalus palustris</a></div><div class="wp-workCard_item"><span>Journal of Avian Biology</span><span>, 2007</span></div><div class="wp-workCard_item wp-workCard--actions"><span class="work-strip-bookmark-button-container"></span><a id="3afe4e035d5b312fd834e85a8d569a52" class="wp-workCard--action" rel="nofollow" data-click-track="profile-work-strip-download" data-download="{"attachment_id":45132567,"asset_id":13628048,"asset_type":"Work","button_location":"profile"}" href="https://www.academia.edu/attachments/45132567/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&s=profile"><span><i class="fa fa-arrow-down"></i></span><span>Download</span></a><span class="wp-workCard--action visible-if-viewed-by-owner inline-block" style="display: none;"><span class="js-profile-work-strip-edit-button-wrapper profile-work-strip-edit-button-wrapper" data-work-id="13628048"><a class="js-profile-work-strip-edit-button" tabindex="0"><span><i class="fa fa-pencil"></i></span><span>Edit</span></a></span></span><span id="work-strip-rankings-button-container"></span></div><div class="wp-workCard_item wp-workCard--stats"><span><span><span class="js-view-count view-count u-mr2x" data-work-id="13628048"><i class="fa fa-spinner fa-spin"></i></span><script>$(function () { var workId = 13628048; 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Marsh warblers breed in more diverse and dense herbaceous vegetation than other cuckoo hosts investigated in comparable studies. The ''perch proximity'' hypothesis was supported as parasitized nests were situated closer to trees than non-parasitized ones. Furthermore, demonstrated for the first time in a cuckoo host, tree height was an important predictor of parasitism, with higher trees increasing the parasitism odds ratio. The ''nest exposure'' hypothesis was also supported since parasitized nests had a shorter stand of vegetation in the close vicinity than non-parasitized nests. However, visibility of the nest from the nearest potential cuckoo perch (cuckoo view) was not selected by the model, probably because most nests were well concealed. Laying date, height of nest above ground and the distance from the nest to the nearest edge of the vegetation were not important predictors of parasitism. Though smaller nests tended to be parasitized more frequently than larger ones, nest size only approached significance, making its importance unclear.","publication_date":{"day":null,"month":null,"year":2007,"errors":{}},"publication_name":"Journal of Avian Biology","grobid_abstract_attachment_id":45132567},"translated_abstract":null,"internal_url":"https://www.academia.edu/13628048/Factors_influencing_the_risk_of_common_cuckoo_Cuculus_canorus_parasitism_on_marsh_warblers_Acrocephalus_palustris","translated_internal_url":"","created_at":"2015-07-04T10:45:37.157-07:00","preview_url":null,"current_user_can_edit":null,"current_user_is_owner":null,"owner_id":32791142,"coauthors_can_edit":true,"document_type":"paper","co_author_tags":[{"id":2252251,"work_id":13628048,"tagging_user_id":32791142,"tagged_user_id":32621644,"co_author_invite_id":null,"email":"e***t@bio.ntnu.no","display_order":0,"name":"Eivin Røskaft","title":"Factors influencing the risk of common cuckoo Cuculus canorus parasitism on marsh warblers Acrocephalus palustris"},{"id":2252327,"work_id":13628048,"tagging_user_id":32791142,"tagged_user_id":null,"co_author_invite_id":490621,"email":"a***v@bio.ntnu.no","display_order":4194304,"name":"Anton Antonov","title":"Factors influencing the risk of common cuckoo Cuculus canorus parasitism on marsh warblers Acrocephalus palustris"}],"downloadable_attachments":[{"id":45132567,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132567/thumbnails/1.jpg","file_name":"Factors_influencing_the_risk_of_Common_C20160427-7419-eod7yw.pdf","download_url":"https://www.academia.edu/attachments/45132567/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Factors_influencing_the_risk_of_common_c.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132567/Factors_influencing_the_risk_of_Common_C20160427-7419-eod7yw-libre.pdf?1461761889=\u0026response-content-disposition=attachment%3B+filename%3DFactors_influencing_the_risk_of_common_c.pdf\u0026Expires=1733267615\u0026Signature=O~1aBRIv8qyTCqCZpUjdx9HOJPPAR1aomPe2eYBrOzq7yRnyeLKCfAhy1jTzZbuIJHICNEjikpkm6Sm9U8cmAPkoj5bYq7rddlxoBhCOQtBvsHa9JwNga4Yu4orn1erm7loKBB5Ogf3U7RPuH9WN8VaK3lC-JESd4OisZ7FX-UxYuAMSYkENbNRtHV7ivRSxKDR6hd2I0rQkWlNaMbm5NX0cSjucmH-5mjFF7YzclyoaesYsrojUkDO0ihn3CTkH0SkXQgmHhKWnrRBLVhjnGLIQ1HV0FI~0ef1zKUFEnOdmJ3t6ADn03YApLnDz5RZ41A22dlfntnx8SjThNUohMQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"slug":"Factors_influencing_the_risk_of_common_cuckoo_Cuculus_canorus_parasitism_on_marsh_warblers_Acrocephalus_palustris","translated_slug":"","page_count":4,"language":"en","content_type":"Work","owner":{"id":32791142,"first_name":"Arne","middle_initials":null,"last_name":"Moksnes","page_name":"ArneMoksnes","domain_name":"independent","created_at":"2015-07-04T10:45:06.873-07:00","display_name":"Arne Moksnes","url":"https://independent.academia.edu/ArneMoksnes"},"attachments":[{"id":45132567,"title":"","file_type":"pdf","scribd_thumbnail_url":"https://attachments.academia-assets.com/45132567/thumbnails/1.jpg","file_name":"Factors_influencing_the_risk_of_Common_C20160427-7419-eod7yw.pdf","download_url":"https://www.academia.edu/attachments/45132567/download_file?st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&st=MTczMzI2NDAxNSw4LjIyMi4yMDguMTQ2&","bulk_download_file_name":"Factors_influencing_the_risk_of_common_c.pdf","bulk_download_url":"https://d1wqtxts1xzle7.cloudfront.net/45132567/Factors_influencing_the_risk_of_Common_C20160427-7419-eod7yw-libre.pdf?1461761889=\u0026response-content-disposition=attachment%3B+filename%3DFactors_influencing_the_risk_of_common_c.pdf\u0026Expires=1733267615\u0026Signature=O~1aBRIv8qyTCqCZpUjdx9HOJPPAR1aomPe2eYBrOzq7yRnyeLKCfAhy1jTzZbuIJHICNEjikpkm6Sm9U8cmAPkoj5bYq7rddlxoBhCOQtBvsHa9JwNga4Yu4orn1erm7loKBB5Ogf3U7RPuH9WN8VaK3lC-JESd4OisZ7FX-UxYuAMSYkENbNRtHV7ivRSxKDR6hd2I0rQkWlNaMbm5NX0cSjucmH-5mjFF7YzclyoaesYsrojUkDO0ihn3CTkH0SkXQgmHhKWnrRBLVhjnGLIQ1HV0FI~0ef1zKUFEnOdmJ3t6ADn03YApLnDz5RZ41A22dlfntnx8SjThNUohMQ__\u0026Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA"}],"research_interests":[{"id":23773,"name":"Avian Biology","url":"https://www.academia.edu/Documents/in/Avian_Biology"},{"id":47884,"name":"Biological Sciences","url":"https://www.academia.edu/Documents/in/Biological_Sciences"}],"urls":[{"id":4932416,"url":"http://www.blackwell-synergy.com/doi/abs/10.1111/j.2007.0908-8857.03813.x"}]}, dispatcherData: dispatcherData }); 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