#family_Anatidae__Anatidae  swimming birds having heavy short-legged bodies and bills with a horny tip: swans; geese; ducks
  supertype:  bird_family  a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
  member:  duck  genus_Anas  genus_Tadorna  genus_Oxyura  genus_Bucephala  genus_Aythya  genus_Aix  genus_Cairina  genus_Somateria  genus_Melanitta  subfamily_Merginae  goose  genus_Anser  genus_Branta  subfamily_Anserinae  genus_Coscoroba  swan  genus_Cygnus
  member of:  order_Anseriformes__Anseriformes  ducks; geese; swans; screamers
     member of:  class_Aves__Aves  birds
        member of:  subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
           member of:  phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
              member of:  kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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