Geese are
waterfowl belonging to the
tribe Anserini of the
family Anatidae. This tribe comprises the genera
Anser (the grey geese),
Branta (the black geese) and
Chen (the white geese). A number of other birds, mostly related to the
shelducks, have "goose" as part of their names. More distantly related members of the family Anatidae are
swans, most of which are larger than true geese, and
ducks, which are smaller.