繁殖期成鳥 © Anonymous eBird S35880065 Macaulay Library ML 55250091
幼鳥 © Jane Mann
繁殖期成鳥 © Evan Lipton
繁殖期成鳥 © Mark Sawyer
幼鳥 © Jason Duxbury
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棲地 © Oscar Wilhelmy

Double-crested Cormorant Nannopterum auritum

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辨識

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Dark body with orange bare skin at the base of the bill. Breeding adults are all black. Immatures and nonbreeders have paler breast. Dives underwater to catch fish. Swims like a duck in between dives. Finds open perches to spread wings and dry feathers. Can be in large flocks or solo. Most widespread cormorant across U.S. and Canada; also most likely to be seen inland.

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