繁殖期の成鳥 © Paul Jones eBird S61762641 Macaulay Library ML 189981051
繁殖期の成鳥 © Tony Palliser
非繁殖期の成鳥/未成鳥 © Christophe Gouraud
繁殖期の成鳥 © Nat Drumheller
繁殖期の成鳥 © Steven Mlodinow
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繁殖期の成鳥 © Steven Mlodinow

シラヒゲウミスズメ Aethia pygmaea

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識別

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Small, blackish, eccentric-looking alcid. Breeds on remote volcanic islands in far northeastern Russia and the western Aleutians of Alaska; winters in the surrounding ocean. Breeding adult has a bright orange bill, fine white whiskers on the face, and a wispy black tuft that droops forward. Non-breeding adults have a short black tuft and much-reduced white whiskers. Crested Auklet is larger, with a stouter bill and a much smaller or completely lacking crest.

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