Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
     Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
       Parvclass Galloanserae Sibley, Ahlquist & Monroe Jr., 1988 see Subcohort Galloanserae Sibley, Ahlquist & Monroe Jr., 1988
         Superorder Anserimorphae see Order Anseriformes Wagler, 1831
           Order Anseriformes Wagler, 1831 - waterfowl and screamers
             Infraorder Anserides see Suborder Anseres Linnaeus, 1758
               Family Anatidae Vigors, 1825 - ducks, geese, swans
                 Subfamily Anatinae Vigors, 1825 - pond ducks
                   Tribe Anatini Vigors, 1825 - typical ducks see Subfamily Anatinae Vigors, 1825
                     01 Genus Callonetta Delacour, 1936
                     02 Genus Aix Boie, 1828
                     03 Genus Chenonetta Brandt, 1836 - maned duck
                     04 Genus Amazonetta Boetticher, 1929
                     05 Genus Merganetta Gould, 1842
                     06 Genus Hymenolaimus Gray, 1843
                     07 Genus Salvadorina Rothschild & Hartert, 1894
                     08 Genus Anas Linnaeus, 1758 - Pacific black duck
                     09 Genus Malacorhynchus Swainson, 1831 - pink-eared duck
                     10 Genus Marmaronetta Reichenbach, 1853
                     11 Genus ‡Rhodonessa Reichenbach, 1853
                     12 Genus Netta Kaup, 1829
                     13 Genus Aythya Boie, 1822 - hardhead
                     14 Genus Somateria Leach, 1819
                     15 Genus Polysticta Eyton, 1836
                     16 Genus ‡Camptorhynchus Bonaparte, 1838
                     17 Genus Histrionicus Lesson, 1828
                     18 Genus Clangula Leach, 1819
                     19 Genus Melanitta Boie, 1822
                     20 Genus Bucephala Baird, 1858
                     21 Genus Mergellus Selby, 1840
                     22 Genus Lophodytes Reichenbach, 1853
                     23 Genus Mergus Linnaeus, 1758