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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.
[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.
Duck plague (DP), also called duck enteritis virus (DEV), presents the most important concern in mass waterfowl production. Free-ranging water birds are the most likely infectious carriers. Free-ranging water birds are the most likely infectious carriers.
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 ...
The North American Waterfowl Management Plan for redheads is 760,000 North American birds. [13] The population size has increased in the past few decades to well over 1.4 million birds. [6] Redheads make up 2% of North America's duck population and only 1% of its harvested ducks. [13]
The Australian wood duck, maned duck or maned goose (Chenonetta jubata) is a dabbling duck found throughout much of Australia. It is the only living species in the genus Chenonetta . Traditionally placed in the subfamily Anatinae (dabbling ducks), it might belong to the subfamily Tadorninae (shelducks); [ 2 ] the ringed teal may be its closest ...
The ring-necked duck (Aythya collaris) is a diving duck from North America commonly found in freshwater ponds and lakes. [3] The scientific name is derived from Greek aithuia , an unidentified seabird mentioned by authors including Hesychius and Aristotle , and Latin collaris , "of the neck" from collum , "neck".
One duck serves as a sentry, watching for predators as the others in the group dive in search of food. [8] Buffleheads are amongst the last waterfowl to leave their breeding grounds and one of the world's most punctual migrants, arriving on their wintering grounds within a narrow margin of time.