Definitions of bluebill

n diving ducks of North America having a bluish-grey bill

broadbill, scaup, scaup duck
Aythya marila, greater scaup
large scaup of North America having a greenish iridescence on the head of the male
Aythya affinis, lake duck, lesser scaup, lesser scaup duck
common scaup of North America; males have purplish heads
Type of:
small wild or domesticated web-footed broad-billed swimming bird usually having a depressed body and short legs

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