Anatidae

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Ducks, geese and swans
Black-bellied Whistling Duck (Dendrocygna autumnalis)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Anseriformes
Family: Anatidae
Vigors, 1825
Subfamilies

Anatinae
Anserinae
Aythyinae
Dendrocygninae
Merginae
Oxyurinae
Plectropterinae
Stictonettinae
Tadorninae
Thalassorninae
and see text

Anatidae is the biological family of birds that includes the ducks, geese and swans.

These birds are common and widespread, and live in or near water. The family has a cosmopolitan distribution, on all the world's continents except Antarctica and on most of the world's islands and island groups.

These are birds that are adapted through evolution[source?] for swimming, floating on the water surface, and in some cases diving. The family contains around 146 species in 40 genera. They are generally herbivorous, and are monogamous breeders. A number of species do annual migrations. A few species have been domesticated for agriculture, and many others are hunted for food and recreation. Five species have become extinct since 1600, and others are close to extinction.