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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 ...
Anseriformes is an order of birds belonging to the clade Galloanseres. It consists of 3 families, 58 genera and 171 living species. It consists of 3 families, 58 genera and 171 living species. [ 1 ] [ 2 ] Extinct species assignment follows the Mikko's Phylogeny Archive [ 3 ] and Paleofile.com websites. [ 4 ]
Anseriformes (Anser being Latin for "goose") is the taxonomic order to which the ducks, geese, swans, and screamers belong. BirdLife International has assessed 166 species; 89 (54% of total species) have had their population estimated. A variety of methods are used for counting waterfowl.
The order Anseriformes contains about 150 species of bird in three families: the Anhimidae (the screamers), Anseranatidae (the Magpie-goose), and the Anatidae, which includes over 140 species of waterfowl, among them the ducks, geese, and swans.
This species is placed in the order Anseriformes, having the characteristic bill structure, but is considered to be distinct from the other species in this taxon. The related and extant families, Anhimidae ( screamers ) and Anatidae ( ducks , geese , and swans ), contain all the other taxa.
Ecological studies conducted in 2002 suggest the Greenland birds should probably be considered a separate species from A. albifrons. [13] Of particular interest is its unusually long period of parental care and association, which may last several years and can include grandparenting, possibly unique among the Anseriformes.
The screamers are three South American bird species placed in family Anhimidae.They were thought to be related to the Galliformes because of similar bills, but are more closely related to the family Anatidae, i.e. ducks and allies, [1] [2] and the magpie goose, [3] within the clade Anseriformes.
One aberrant species, the black-headed duck, is an obligate brood parasite, laying its eggs in the nests of gulls and coots. While this species never raises its own young, a number of other ducks occasionally lay eggs in the nests of conspecifics (members of the same species) in addition to raising their own broods.