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Cowbird (Brown-headed Cowbird)
A young Cowbird is
fed by its parent
Yellow Warbler
A pair of Cowbirds
一対のCowbird
All Cowbirds lay their eggs in nests
of other species*. Cowbirdは、他の種類の鳥の巣に、こっそり自分たちの卵を産み落とします。Cowbirdの卵とは知らず、その巣の親鳥は、Cowbirdの子を育てます。Cowbirdは、この習性のため、賢い？、または、ずるい鳥として悪名高いです。
Videos:
A
Brown-headed Cowbird has laid an egg in this Northern Cardinal nest
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Chickadee
feeding Cowbird fledgling
(America)
Nature of the cuckoo duck - David Attenborough - BBC wildlife
(Europe)
Brood Parasitism: Defense strategies against
brood parasites have been developed by many host species.
ホスト側の鳥の親は、この産み落としをどう防ぐのでしょう
Brood parasite (托卵-たくらん-)
Parasitism (寄生)
10967 160308
How Does a Cowbird Learn To Be a Cowbird? - Audubon
*
Field Guide
to the Birds of North America (Washington, D.C.: National Geographic
Society, 1991)
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