bluebill

English Thesaurus

1. diving ducks of North America having a bluish-grey bill (noun.animal)

hypernym	:	duck,
definition	:	small wild or domesticated web-footed broad-billed swimming bird usually having a depressed body and short legs (noun.animal)

hyponym	:	aythya marila, greater scaup,
definition	:	large scaup of North America having a greenish iridescence on the head of the male (noun.animal)

hyponym	:	aythya affinis, lake duck, lesser scaup, lesser scaup duck,
definition	:	common scaup of North America; males have purplish heads (noun.animal)

member meronym	:	aythya, genus aythya,
definition	:	canvasback; redhead; pochard; etc. (noun.animal)