A rather small, compact diving duck with a rather large head, a long, heavy bill, and a fairly long tail.
Larger than a Harlequin Duck, smaller than a Common Eider.crow-sized
- Both Sexes
Despite differences in color, both sexes have blocky head with flat crown and thick gray bill.
Mostly white head with large black eye, black collar around neck, and creamy-buff belly with black spot on side.
Males have a mostly white head, black back, and creamy-buff belly. Females are dark brown with a pale eyering and a heavy gray bill.
Breeds in shallow tundra wetlands. Male has mostly white head with large black eye. Black back shows white stripes at rest; black rear.
Male in flight has extensively white forewing. Female has blue-black secondaries bordered in white and white underwings.
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