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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.
Geese and ducks are just two types of water birds, which include seabirds, shorebirds, waterfowl, and numerous other forms of birds. Video of gulls, ducks, and swans feeding on the Danube River in Vienna (2014) A water bird, alternatively waterbird or aquatic bird, is a bird that lives on or around water.
Duck is the common name for numerous species of waterfowl in the family Anatidae. Ducks are generally smaller and shorter-necked than swans and geese , which are members of the same family. Divided among several subfamilies, they are a form taxon ; they do not represent a monophyletic group (the group of all descendants of a single common ...
This is a list of Anseriformes species by global population. While numbers are estimates, they have been made by the experts in their fields. Anseriformes (Anser being Latin for "goose") is the taxonomic order to which the ducks, geese, swans, and screamers belong.
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 ...
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]
Wood duck (state waterfowl) Aix sponsa: 1974 [65] Missouri: Bobwhite quail (state game bird) Colinus virginianus: 2007 [66] New Hampshire: Red-tailed hawk (state raptor) Buteo jamaicensis: 2019 [67] Oklahoma: Wild turkey (state game bird) Meleagris gallopavo: 1990 [68] Oregon: Osprey (state raptor) Pandion haliaetus: 2017 [69] Pennsylvania ...
'And if it looks like a duck and talks like a duck, it should be taxed like a duck. [8] The Liskov Substitution Principle in computer science is sometimes expressed as a counter-example to the duck test: If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction. [9]