Nest decoration: birds exploit a fear of feathers to guard their nest from usurpation
Many species of birds incorporate feathers into their nest as structural support and to insulate the eggs or offspring. Here, we investigated the novel idea that birds reduce the risk of nest usurpation by decorating it with feathers to trigger a fear response in their rivals. We let prospecting bir...
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Published in | Royal Society open science Vol. 8; no. 11; p. 211579 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
England
The Royal Society Publishing
01.11.2021
The Royal Society |
Subjects | |
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Abstract | Many species of birds incorporate feathers into their nest as structural support and to insulate the eggs or offspring. Here, we investigated the novel idea that birds reduce the risk of nest usurpation by decorating it with feathers to trigger a fear response in their rivals. We let prospecting birds choose between a dyad of nest-boxes in the wild, both containing some nest materials, but where one had a few white feathers and the other had none. All three species of cavity-nesting birds studied, the pied flycatcher
, the blue tit
, and the tree swallow
, hesitated to enter boxes with white feathers. A similar avoidance of white feathers was found when the alternative nest-box of a dyad held black feathers. However, the birds readily collected white feathers that we placed in front of their nest-box, showing the fear of such feathers was context-dependent. We suggest that naive prospecting birds may perceive feathers in nests as the result of a predation event, and that owners decorate nests with bright feathers that can be seen from the opening to deter others from entering. |
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AbstractList | Many species of birds incorporate feathers into their nest as structural support and to insulate the eggs or offspring. Here, we investigated the novel idea that birds reduce the risk of nest usurpation by decorating it with feathers to trigger a fear response in their rivals. We let prospecting birds choose between a dyad of nest-boxes in the wild, both containing some nest materials, but where one had a few white feathers and the other had none. All three species of cavity-nesting birds studied, the pied flycatcher
, the blue tit
, and the tree swallow
, hesitated to enter boxes with white feathers. A similar avoidance of white feathers was found when the alternative nest-box of a dyad held black feathers. However, the birds readily collected white feathers that we placed in front of their nest-box, showing the fear of such feathers was context-dependent. We suggest that naive prospecting birds may perceive feathers in nests as the result of a predation event, and that owners decorate nests with bright feathers that can be seen from the opening to deter others from entering. Many species of birds incorporate feathers into their nest as structural support and to insulate the eggs or offspring. Here, we investigated the novel idea that birds reduce the risk of nest usurpation by decorating it with feathers to trigger a fear response in their rivals. We let prospecting birds choose between a dyad of nest-boxes in the wild, both containing some nest materials, but where one had a few white feathers and the other had none. All three species of cavity-nesting birds studied, the pied flycatcher Ficedula hypoleuca, the blue tit Cyanistes caeruleus, and the tree swallow Tachycineta bicolor, hesitated to enter boxes with white feathers. A similar avoidance of white feathers was found when the alternative nest-box of a dyad held black feathers. However, the birds readily collected white feathers that we placed in front of their nest-box, showing the fear of such feathers was context-dependent. We suggest that naive prospecting birds may perceive feathers in nests as the result of a predation event, and that owners decorate nests with bright feathers that can be seen from the opening to deter others from entering. Many species of birds incorporate feathers into their nest as structural support and to insulate the eggs or offspring. Here, we investigated the novel idea that birds reduce the risk of nest usurpation by decorating it with feathers to trigger a fear response in their rivals. We let prospecting birds choose between a dyad of nest-boxes in the wild, both containing some nest materials, but where one had a few white feathers and the other had none. All three species of cavity-nesting birds studied, the pied flycatcher Ficedula hypoleuca , the blue tit Cyanistes caeruleus , and the tree swallow Tachycineta bicolor , hesitated to enter boxes with white feathers. A similar avoidance of white feathers was found when the alternative nest-box of a dyad held black feathers. However, the birds readily collected white feathers that we placed in front of their nest-box, showing the fear of such feathers was context-dependent. We suggest that naive prospecting birds may perceive feathers in nests as the result of a predation event, and that owners decorate nests with bright feathers that can be seen from the opening to deter others from entering. |
Author | Wiebe, Karen L Slagsvold, Tore |
Author_xml | – sequence: 1 givenname: Tore orcidid: 0000-0003-2410-3269 surname: Slagsvold fullname: Slagsvold, Tore organization: Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Oslo 0316, Norway – sequence: 2 givenname: Karen L surname: Wiebe fullname: Wiebe, Karen L organization: Department of Biology, University of Saskatchewan, Saskatoon, Canada |
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Cites_doi | 10.1098/rsbl.2017.0246 10.2307/4629 10.1016/j.beproc.2021.104408 10.1111/j.1557-9263.2011.00317.x 10.1007/s11692-016-9402-7 10.1111/j.1365-2435.2007.01361.x 10.1080/03949370.2021.1871965 10.1002/ece3.6931 10.1126/science.1199422 10.1098/rsbl.2005.0329 10.1111/j.1365-2656.2007.01294.x 10.2307/1368072 10.1111/j.1600-048X.2012.05704.x 10.1111/j.1600-048X.2010.05208.x 10.1111/jav.02632 10.1139/cjz-2017-0299 10.1007/s00265-020-02912-2 10.1016/j.anbehav.2009.09.013 10.1111/bij.12079 10.3161/000164508X345392 10.1093/beheco/arx139 10.1525/cond.2010.090194 10.1016/j.anbehav.2020.10.005 10.51812/of.133857 10.1093/beheco/arq199 10.1163/156853996X00305 10.3184/175815516X14551240159329 10.1186/s12862-018-1301-3 10.2307/1369030 10.2307/1313225 10.1006/anbe.1998.0862 10.1007/s10336-015-1207-4 10.1093/beheco/arh010 10.1093/beheco/art015 10.1093/auk/101.3.615 10.1163/000579511X608684 10.3389/fevo.2020.00205 10.1034/j.1600-048X.2002.330316.x 10.1111/jav.02528 10.3389/fevo.2017.00039 10.1007/s00265-021-03045-w 10.2307/3676000 10.2307/1311947 10.1371/journal.pone.0203269 10.1007/s00265-017-2281-9 10.1098/rsbl.2008.0631 10.1093/beheco/arx101 10.1016/j.anbehav.2014.10.024 |
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Keywords | nest usurping hole-nesting deception birds predator avoidance feathers |
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SubjectTerms | birds deception feathers hole-nesting nest usurping Organismal and Evolutionary Biology predator avoidance |
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Title | Nest decoration: birds exploit a fear of feathers to guard their nest from usurpation |
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