#waterfowl__water_bird__waterbird__waterbird  freshwater aquatic bird
  supertype:  #aquatic_bird__aquaticbird  wading and swimming and diving birds of either fresh or salt water
  subtype:  #anseriform_bird  chiefly web-footed swimming birds
     subtype:  #duck  small wild or domesticated web-footed broad-billed swimming bird usually having a depressed body and short legs
        subtype:  #drake  adult male of a wild or domestic duck
        subtype:  #quack-quack  child's word for a duck
        subtype:  #duckling  young duck
        subtype:  #diving_duck  any of various ducks of especially bays and estuaries that dive for their food
        subtype:  #dabbling_duck__dabbler  any of numerous shallow-water ducks that feed by upending and dabbling
        subtype:  #mallard__Anas_platyrhynchos  wild dabbling duck from which domestic ducks are descended; widely distributed
        subtype:  #black_duck__blackduck__Anas_rubripes  dusky black duck of northeastern United States and Canada
        subtype:  #teal  any of various small short-necked dabbling river ducks of Europe and America
           subtype:  #greenwing__green-winged_teal__Anas_crecca  common teal of Eurasia and North America
           subtype:  #bluewing__blue-winged_teal__Anas_discors  American teal
           subtype:  #garganey__Anas_querquedula  small Eurasian teal
        subtype:  #widgeon__wigeon__Anas_penelope  freshwater duck of Eurasia and North Africa related to mallards and teals
           subtype:  #American_widgeon__baldpate__Anas_americana  American widgeon the male of which has a white crown
        subtype:  #Anas_clypeata__shoveler__shoveller__broadbill  freshwater duck of the northern hemisphere having a broad flat bill
        subtype:  #pintail__pin-tailed_duck__Anas_acuta  long-necked river duck of the Old and New Worlds having elongated central tail feathers
        subtype:  #sheldrake  Old World gooselike duck slightly larger than a mallard with variegated mostly black-and-white plumage and a red bill
           subtype:  #shelduck  female sheldrake
        subtype:  #ruddy_duck__ruddyduck__oxyurajamaicensi  reddish-brown stiff-tailed duck of North America and and northern South America
        subtype:  #bufflehead__butterball__dipper__Bucephela_albeola  small North American diving duck; males have bushy head plumage
        subtype:  #goldeneye__whistler__Bucephela_clangula  large-headed swift-flying diving duck of arctic regions
           subtype:  #Barrow's_goldeneye__Bucephala_islandica  North American goldeneye diving duck
        subtype:  #canvasback_duck__canvasback__Aythya_valisineria  North American wild duck valued for sport and food
        subtype:  #pochard__Aythya_ferina  heavy-bodied Old World diving duck having a gray-and-black body and reddish head
        subtype:  #Aythya_americana__redhead  North American diving duck with a gray-and-black body and reddish-brown head
        subtype:  #scaup_duck__scaupduck__bluebill__broadbill  diving ducks of North America having a bluish-gray bill
           subtype:  #greater_scaup__greaterscaup__Aythya_marila  large scaup of North America having a greenish iridescence on the head of the male
           subtype:  #lesser_scaup_duck__lesser_scaup__lake_duck__Aythya_affinis  common scaup of North America; males have purplish heads
        subtype:  #wild_duck  an undomesticated duck (especially a mallard)
        subtype:  #wood_duck__summer_duck__wood_widgeon__Aix_sponsa  showy North American duck that nests in hollow trees
           subtype:  #wood_drake  male wood duck
        subtype:  #mandarin_duck__Aix_galericulata  showy crested Asiatic duck; often domesticated
        subtype:  #muscovy_duck__muscovyduck__muskduck__Cairina_moschata  large crested wild duck of Central and South America; widely domesticated
        subtype:  #sea_duck__seaduck  any of various large diving ducks found along the seacoast: eider; scoter; merganser
           subtype:  #eider_duck__eiderduck  duck of the northern hemisphere much valued for the fine soft down of the females
           subtype:  #scoter__scooter  large black diving duck of northern parts of the northern hemisphere
              subtype:  #common_scoter__Melanitta_nigra  a variety of scoter
           subtype:  #old_squaw__oldsquaw__oldwife__clangulahyemali  a common long-tailed sea duck of the northern parts of the United States
           subtype:  #merganser__fish_duck__sawbill  large crested fish-eating diving duck having a slender hooked bill with serrated edges
              subtype:  #goosander__Mergus_merganser  common merganser of Europe and North America
              subtype:  #American_merganser__Mergus_merganser_americanus  common North American diving duck considered a variety of the European goosander
              subtype:  #red-breasted_merganser__Mergus_serrator  widely distributed merganser of America and Europe
              subtype:  #smew__Mergus_albellus  smallest merganser and most expert diver; found in northern Eurasia
              subtype:  #hooded_merganser__hooded_sheldrake__Lophodytes_cucullatus  small North American duck with a high circular crest on the male's head
     subtype:  #goose  web-footed long-necked typically gregarious migratory aquatic birds usually larger and less aquatic than ducks
        subtype:  #gosling  young goose
        subtype:  #gander  mature male goose
        subtype:  #Chinese_goose__Anser_cygnoides  very large wild goose of northeast Asia; interbreeds freely with the graylag
        subtype:  #graylag__greylag__greylag_goose__greylaggoose__Anser_anser  common gray wild goose of Europe; ancestor of many domestic breeds
        subtype:  #blue_goose__Chen_caerulescens  North American wild goose having dark plumage in summer but white in winter
           subtype:  #snow_goose  blue goose in the white color phase
        subtype:  #brant_goose__brantgoose__brant__brent__brent_goose__brentgoose  small dark geese that breed in the north and migrate southward
           subtype:  #common_brant_goose__Branta_bernicla  the best known variety of brant goose
        subtype:  #Canada_goose__honker__Canadian_goose__Branta_canadensis  common grayish-brown wild goose of North America
        subtype:  #barnacle_goose__barnacle__Branta_leucopsis  European goose smaller than the brant; breeds in the far north
  subtype:  #screamer  gooselike aquatic bird of South America having a harsh trumpeting call
     subtype:  #horned_screamer__Anhima_cornuta  screamer having a hornlike process projecting from the forehead
     subtype:  #crested_screamer__crestedscreamer  distinguished from the horned screamer by a feathery crest on the back of the head
        subtype:  #chaja__Chauna_torquata  largest crested screamer; naive to southern Brazil and Argentina

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