beyaz don erişkin © Brad Imhoff eBird S77893483 Macaulay Library ML 290513131
Erişkin mavi don © Charles Hundertmark
ara don erişkin © Simon Boivin
beyaz don erişkin © Darren Clark
genç white don © Levi Plummer
+ 6
genç blue don © Suzanne Labbé
Erişkin mavi don ve erişkin beyaz don © Martina Nordstrand
Erişkin mavi don (with Canada Goose) © Fred Jennings
beyaz don erişkin ve mavi don erişkin © Joshua Covill
sürü © Marky Mutchler

Kar Kazı Anser caerulescens

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Tanımlama

MERLIN TEMELLİ ÇALIŞIR

Medium-sized goose with two strikingly different color morphs. White morph generally more common. Adults have black wingtips, pink bill and legs, and often show yellowish staining on the head. Juveniles have dull brownish bill and legs and variable grayish smudging on body and wings. Dark morph adults are dark slaty-gray with a white face; juveniles are entirely dark. Typically found in flocks, sometimes numbering into the thousands, but individuals may be found with other geese species. Occurs in fields, marshes, and lakes during migration and winter; breeds on Arctic tundra. Compare with Ross’s Goose, which is like a cuter miniature version of Snow Goose. Pay attention to the bill: Snow Goose has a longer bill with a more curved border where it meets the face, and a more pronounced dark “grin patch” (but beware, Ross’s can show a small grin patch too!).

MERLIN TEMELLİ ÇALIŞIR