bird genus - a genus of birds

Anatidae, family Anatidae - swimming birds having heavy short-legged bodies and bills with a horny tip: swans; geese; ducks

brant, brant goose, brent, brent goose - small dark geese that breed in the north and migrate southward

Branta canadensis, Canada goose, Canadian goose, honker - common grayish-brown wild goose of North America

barnacle goose, Branta leucopsis, barnacle - European goose smaller than the brant; breeds in the far north