bird family - a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings

Anseriformes, order Anseriformes - ducks; geese; swans; screamers

duck - small wild or domesticated web-footed broad-billed swimming bird usually having a depressed body and short legs

Anas, genus Anas - type genus of the Anatidae: freshwater ducks

genus Tadorna, Tadorna - sheldrakes

genus Oxyura, Oxyura - ruddy duck

Bucephala, genus Bucephala - buffleheads and goldeneyes

Aythya, genus Aythya - canvasback; redhead; pochard; etc.

Aix, genus Aix - wood duck and mandarin duck

Cairina, genus Cairina - a genus of Anatidae

genus Somateria, Somateria - eider ducks

genus Melanitta, Melanitta - scoters

Merginae, subfamily Merginae - mergansers and closely related diving birds

goose - web-footed long-necked typically gregarious migratory aquatic birds usually larger and less aquatic than ducks

Anser, genus Anser - typical geese

Branta, genus Branta - wild geese

Anserinae, subfamily Anserinae - used in some classifications for the swans

genus Coscoroba - a genus of Anatidae

swan - stately heavy-bodied aquatic bird with very long neck and usually white plumage as adult

genus Cygnus, Cygnus - a genus of Anatidae