#order_Anseriformes__Anseriformes  ducks; geese; swans; screamers
  supertype:  animal_order  the order of animals
  member of:  class_Aves
  member:  anseriform_bird  chiefly web-footed swimming birds
  member:  family_Anatidae__Anatidae  swimming birds having heavy short-legged bodies and bills with a horny tip: swans; geese; ducks
     member:  duck  small wild or domesticated web-footed broad-billed swimming bird usually having a depressed body and short legs
     member:  genus_Anas__Anas  type genus of the Anatidae: freshwater ducks
        member:  mallard__Anas_platyrhynchos  wild dabbling duck from which domestic ducks are descended; widely distributed
        member:  black_duck__blackduck__Anas_rubripes  dusky black duck of northeastern United States and Canada
        member:  teal  any of various small short-necked dabbling river ducks of Europe and America
        member:  widgeon__wigeon__Anas_penelope  freshwater duck of Eurasia and North Africa related to mallards and teals
        member:  Anas_clypeata__shoveler__shoveller__broadbill  freshwater duck of the northern hemisphere having a broad flat bill
        member:  pintail__pin-tailed_duck__Anas_acuta  long-necked river duck of the Old and New Worlds having elongated central tail feathers
     member:  genus_Tadorna__Tadorna  sheldrakes
        member:  sheldrake  Old World gooselike duck slightly larger than a mallard with variegated mostly black-and-white plumage and a red bill
     member:  genus_Oxyura__Oxyura  ruddy duck
        member:  ruddy_duck__ruddyduck__oxyurajamaicensi  reddish-brown stiff-tailed duck of North America and and northern South America
     member:  genus_Bucephala__Bucephala  buffleheads and goldeneyes
        member:  bufflehead__butterball__dipper__Bucephela_albeola  small North American diving duck; males have bushy head plumage
        member:  goldeneye__whistler__Bucephela_clangula  large-headed swift-flying diving duck of arctic regions
     member:  genus_Aythya__Aythya  canvasback; redhead; pochard; etc.
        member:  canvasback_duck__canvasback__Aythya_valisineria  North American wild duck valued for sport and food
        member:  pochard__Aythya_ferina  heavy-bodied Old World diving duck having a gray-and-black body and reddish head
        member:  Aythya_americana__redhead  North American diving duck with a gray-and-black body and reddish-brown head
        member:  scaup_duck__scaupduck__bluebill__broadbill  diving ducks of North America having a bluish-gray bill
     member:  genus_Aix__Aix  wood duck and mandarin duck
        member:  wood_duck__summer_duck__wood_widgeon__Aix_sponsa  showy North American duck that nests in hollow trees
        member:  mandarin_duck__Aix_galericulata  showy crested Asiatic duck; often domesticated
     member:  genus_Cairina__Cairina  a genus of Anatidae
        member:  muscovy_duck__muscovyduck__muskduck__Cairina_moschata  large crested wild duck of Central and South America; widely domesticated
     member:  genus_Somateria__Somateria  eider ducks
        member:  eider_duck__eiderduck  duck of the northern hemisphere much valued for the fine soft down of the females
     member:  genus_Melanitta__Melanitta  scoters
        member:  scoter__scooter  large black diving duck of northern parts of the northern hemisphere
     member:  subfamily_Merginae__Merginae  mergansers and closely related diving birds
        member:  genus_Mergus__Mergus  mergansers
           member:  merganser__fish_duck__sawbill  large crested fish-eating diving duck having a slender hooked bill with serrated edges
           member:  goosander__Mergus_merganser  common merganser of Europe and North America
           member:  American_merganser__Mergus_merganser_americanus  common North American diving duck considered a variety of the European goosander
           member:  red-breasted_merganser__Mergus_serrator  widely distributed merganser of America and Europe
           member:  smew__Mergus_albellus  smallest merganser and most expert diver; found in northern Eurasia
        member:  genus_Lophodytes__Lophodytes  a genus of Merginae
           member:  hooded_merganser__hooded_sheldrake__Lophodytes_cucullatus  small North American duck with a high circular crest on the male's head
     member:  goose  web-footed long-necked typically gregarious migratory aquatic birds usually larger and less aquatic than ducks
     member:  genus_Anser__Anser  typical geese
        member:  Chinese_goose__Anser_cygnoides  very large wild goose of northeast Asia; interbreeds freely with the graylag
        member:  graylag__greylag__greylag_goose__greylaggoose__Anser_anser  common gray wild goose of Europe; ancestor of many domestic breeds
        member:  subgenus_Chen__Chen  wild goose having white adult plumage
           member:  blue_goose__Chen_caerulescens  North American wild goose having dark plumage in summer but white in winter
     member:  genus_Branta__Branta  wild geese
        member:  brant_goose__brantgoose__brant__brent__brent_goose__brentgoose  small dark geese that breed in the north and migrate southward
        member:  Canada_goose__honker__Canadian_goose__Branta_canadensis  common grayish-brown wild goose of North America
        member:  barnacle_goose__barnacle__Branta_leucopsis  European goose smaller than the brant; breeds in the far north
     member:  subfamily_Anserinae__Anserinae  used in some classifications for the swans
     member:  genus_Coscoroba  a genus of Anatidae
        member:  coscoroba  large white South American bird intermediate in some respects between ducks and swans
     member:  swan  stately heavy-bodied aquatic bird with very long neck and usually white plumage as adult
     member:  genus_Cygnus__Cygnus  a genus of Anatidae
        member:  mute_swan__Cygnus_olor  soundless Eurasian swan; commonly domesticated
        member:  whooper_swan__whooperswan__whooper__Cygnus_cygnus  common Old World swan noted for its whooping call
        member:  tundra_swan__Cygnus_columbianus  swan that nests in tundra regions of the New and Old Worlds
        member:  trumpeter_swan__trumpeterswan__trumpeter__Cygnus_buccinator  large pure white wild swan of western North America having a sonorous cry
        member:  black_swan__blackswan__Cygnus_atratus  large Australian swan having black plumage and a red bill
  member:  suborder_Anseres__Anseres  used in some especially older classifications; coextensive with the family Anatidae
  member:  family_Anhimidae__Anhimidae  screamers
     member:  screamer  gooselike aquatic bird of South America having a harsh trumpeting call
     member:  genus_Anhima__Anhima  type genus of the Anhimidae; horned screamers
        member:  horned_screamer__Anhima_cornuta  screamer having a hornlike process projecting from the forehead
     member:  genus_Chauna__Chauna  crested screamers
        member:  crested_screamer__crestedscreamer  distinguished from the horned screamer by a feathery crest on the back of the head

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