The Black Scoter is the plainest scoter — the male is entirely black with a distinctive yellow knob at the base of the bill. Females are dark brown with pale cheeks. Large flocks fly in long lines low over the ocean during migration. It is an Arctic breeder that winters along both US coasts.
Habitat
Ocean and coastal bays in winter; tundra lakes when breeding in Alaska
Diet
Bivalves and invertebrates dived for at sea
How common
Common
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