Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Anseriformes Wagler, 1831 - waterfowl and screamers
           Family Anatidae Vigors, 1825 - ducks, geese, swans
             Subfamily Anserinae Vigors, 1825 - geese
               1 Genus Dendrocygna Swainson, 1837 - wandering whistling-duck
               2 Genus Cygnus Bechstein, 1803 - mute swan
               3 Genus Coscoroba Reichenbach, 1853
               4 Genus Anser Brisson, 1760
               5 Genus Branta Scopoli, 1769 - Canada goose
               6 Genus Cereopsis Latham, 1801 - Cape Barren goose