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1 October 2014 Birds build camouflaged nests
Ida E. Bailey, Felicity Muth, Kate Morgan, Simone L. Meddle, Susan D. Healy
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It is assumed that many birds attempt to conceal their nests by using camouflage. To our knowledge, however, no previous experimental studies have explicitly tested this assumption. To explore whether birds choose materials that match the background colors of nest sites to reduce the conspicuousness of their nests, we offered nest-building male Zebra Finches (Taeniopygia guttata) a choice of nest materials that either matched or did not match the color of their nest cup and the surrounding cage walls. Males chose to nest predominantly with material that matched the background color of the cage. To our knowledge, this is the first experimental evidence that birds actively select materials that camouflage their nests.

Ida E. Bailey, Felicity Muth, Kate Morgan, Simone L. Meddle, and Susan D. Healy "Birds build camouflaged nests," The Auk 132(1), 11-15, (1 October 2014).
Received: 7 April 2014; Accepted: 1 July 2014; Published: 1 October 2014
Background matching
Zebra Finch
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