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The avian family Anatidae, commonly called waterfowl, comprise the ducks, geese, and swans. The International Ornithological Committee (IOC) recognizes these 174 Anatidae species distributed among 53 genera, 32 of which have only one species.
Through March 2021, Ducks Unlimited had conserved at least 15 million acres [6] of waterfowl habitat in North America. [ 7 ] To promote the conservation of waterbirds in America, the United States Fish and Wildlife Service established the Waterbird Conservation for the Americas to facilitate this over such a large area.
[2] [4] The peculiar marbled duck, formerly tentatively assigned to the dabbling ducks, is thought to be a diving duck or even a distinct subfamily. [ 2 ] This group of ducks has been so named because its members feed mainly on vegetable matter by upending on the water surface, or grazing, and only rarely diving.
Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which includes over 170 species of waterfowl, among them the ducks, geese, and swans. Most modern species in the ...
While shortcomings certainly occur in Livezey's analysis, [citation needed] mtDNA is an unreliable source for phylogenetic information in many waterfowl (especially dabbling ducks) due to their ability to produce fertile hybrids, [2] in rare cases possibly even beyond the level of genus (see for example the "Barbary duck").
The shelducks, most species of which are found in the genus Tadorna (except for the Radjah shelduck, which is now found in its own monotypic genus Radjah), are a group of large birds in the Tadorninae subfamily of the Anatidae, the biological family that includes the ducks and most duck-like waterfowl such as the geese and swans.
[1] [2] The last state to choose its bird was Arizona in 1973. Pennsylvania never chose an official state bird, but did choose the ruffed grouse as the state game bird. [ 3 ] Alaska , California , and South Dakota permit hunting of their state birds.
The freckled duck (Stictonetta naevosa) is a waterfowl species endemic to Australia. The freckled duck has also been referred to as the monkey duck or oatmeal duck. [2] These birds are usually present in mainland Australia, but disperse to coastal and subcostal wetlands in the dry period. During such times it is common for the freckled duck ...