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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.
Some piscivore birds of prey, such as ospreys and sea eagles, hunt aquatic prey but do not stay in water for long and live predominantly over dry land, and are not considered water birds. The term waterbird is also used in the context of conservation to refer to any birds that inhabit or depend on bodies of water or wetland areas.
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]
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 ...
Delta Waterfowl Foundation; Duck call; M. Moffitt's Canada goose; N. North American Waterfowl Management Plan ... This page was last edited on 18 March 2023, at 03:13 ...
Order: Anseriformes Family: Anatidae Anatidae includes the ducks and most duck-like waterfowl, such as geese and swans.These birds are adapted to an aquatic existence with webbed feet, flattened bills, and feathers that are excellent at shedding water due to an oily coating.
This is the largest of the steamer duck species. It is a massively built waterfowl at 3.5–7 kg (7.7–15.4 lb) and 65–84 cm (26–33 in) in length, with the males noticeably larger than the females. [2] Males weigh an average of 5.34 kg (11.8 lb) while females weigh around 4.2 kg (9.3 lb) on average. [3]
[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.