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This list of birds of Oklahoma includes every wild bird species recorded in the U.S. state of Oklahoma, as recorded by the Oklahoma Bird Records Committee. There are 469 species, including 17 hypothetical species. Birds listed as either accidental or hypothetical should not be expected to be found anywhere in Oklahoma with regularity. Except for those birds, only birds that are considered to have established, self-sustaining, wild populations in Oklahoma are included on this list. This means that birds that are probable escapees are not included. The ringed turtle-dove (''Streptopelia risoria'') was previously considered to be an established wild bird, and, although occasional sightings are reported from residential areas, these birds are probable escapees, and evidence of a true self-sustaining population is lacking. It is not included on this list. This list is presented in taxonomic order and follows ''The Check-list of North American Birds'' (7th edition, 1998) published by the American Ornithologists' Union. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family account. Introduced, casual, accidental, hypothetical, extirpated and extinct species are included in the total species counts for North America and Oklahoma. The following markings have been used: *(I) Introduced - a species introduced to North America by the actions of humans, either directly or indirectly *(E) Extinct - a species that no longer exists *(Ex) Extirpated - a species that, while not extinct, is no longer found in Oklahoma *(A) Accidental - a species that has been seen only once or a few times *(H) Hypothetical - a species that has had a credible sighting reported, but has not been documented with a specimen or suitable photograph __NOTOC__ ==Ducks, geese and swans== Order: AnseriformesFamily: Anatidae The family 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, bills which are flattened to a greater or lesser extent, and feathers that are excellent at shedding water due to special oils. *Black-bellied whistling-duck, ''Dendrocygna autumnalis'' *Fulvous whistling-duck, ''Dendrocygna bicolor'' (A) *Greater white-fronted goose, ''Anser albifrons'' *Snow goose, ''Chen caerulescens'' *Ross's goose, ''Chen rossii'' *Brant, ''Branta bernicla'' (A) *Barnacle goose, ''Branta leucopsis'' (A) *Cackling goose, ''Branta hutchinsonii'' *Canada goose, ''Branta canadensis'' *Mute swan, ''Cygnus olor'' (I)(H) *Trumpeter swan, ''Cygnus buccinator'' *Tundra swan, ''Cygnus columbianus'' *Wood duck, ''Aix sponsa'' *Gadwall, ''Anas strepera'' *Eurasian wigeon, ''Anas penelope'' (A) *American wigeon, ''Anas americana'' *American black duck, ''Anas rubripes'' *Mallard, ''Anas platyrhynchos'' *Mottled duck, ''Anas fulvigula'' (A) *Blue-winged teal, ''Anas discors'' *Cinnamon teal, ''Anas cyanoptera'' *Northern shoveler, ''Anas clypeata'' *Northern pintail, ''Anas acuta'' *Garganey, ''Anas querquedula'' *Baikal teal, ''Anas formosa'' (H) *Green-winged teal, ''Anas crecca'' *Canvasback, ''Aythya valisineria'' *Redhead, ''Aythya americana'' *Ring-necked duck, ''Aythya collaris'' *Greater scaup, ''Aythya marila'' *Lesser scaup, ''Aythya affinis'' *Surf scoter, ''Melanitta perspicillata'' *White-winged scoter, ''Melanitta fusca'' *Black scoter, ''Melanitta americana'' (A) *Long-tailed duck, ''Clangula hyemalis'' *Bufflehead, ''Bucephala albeola'' *Common goldeneye, ''Bucephala clangula'' *Barrow's goldeneye, ''Bucephala islandica'' (A) *Hooded merganser, ''Lophodytes cucullatus'' *Common merganser, ''Mergus merganser'' *Red-breasted merganser, ''Mergus serrator'' *Ruddy duck, ''Oxyura jamaicensis'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of birds of Oklahoma」の詳細全文を読む スポンサード リンク
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