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 Anatinae Vigors, 1825 - pond ducks
               Genus Anas Linnaeus, 1758 - Pacific black duck
                 01 Anas sparsa Eyton, 1838 - African black duck
                 02 Anas penelope Linnaeus, 1758 - Eurasian wigeon
                 03 Anas americana Gmelin, 1789 - American wigeon
                 04 Anas sibilatrix Poeppig, 1829 - Chiloe wigeon
                 05 Anas falcata Georgi, 1775 - falcated teal
                 06 Anas strepera Linnaeus, 1758 - gadwall
                 07 Anas formosa Georgi, 1775 - Baikal teal
                 08 Anas crecca Linnaeus, 1758 - common teal
                 09 Anas flavirostris Vieillot, 1816 - speckled teal
                 10 Anas capensis Gmelin, 1789 - Cape teal
                 11 Anas gibberifrons Müller, 1842 - Sunda teal
                 12 Anas bernieri (Hartlaub, 1860) - Madagascan teal
                 13 Anas castanea (Eyton, 1838) - chestnut-breasted teal
                 14 Anas aucklandica (Gray, 1844) - Auckland Islands teal
                 15 Anas platyrhynchos Linnaeus, 1758 - mallard
                 16 Anas wyrilliana see Anas wyvilliana Sclater, 1878
                 17 Anas laysanensis Rothschild, 1892 - Laysan duck
                 18 Anas rubripes Brewster, 1902 - American black duck
                 19 Anas melleri Sclater, 1865 - Meller's duck
                 20 Anas undulata Dubois, 1839 - yellow-billed duck
                 21 Anas poecilorhyncha Forster, 1781 - spot-billed duck
                 22 Anas luzonica Fraser, 1839 - Philippine duck
                 23 Anas superciliosa Gmelin, 1789 - Pacific black duck
                 24 Anas specularis King, 1828 - spectacled duck see Speculanas specularis (King, 1828)
                 25 Anas specularioides King, 1828 - crested duck see Lophonetta specularioides (King, 1828)
                 26 Anas acuta Linnaeus, 1758 - northern pintail
                 27 Anas georgica Gmelin, 1789 - yellow-billed pintail
                 28 Anas bahamensis Linnaeus, 1758 - white-cheeked pintail
                 29 Anas erythrorhyncha Gmelin, 1789 - red-billed duck
                 30 Anas versicolor Vieillot, 1816 - silver teal
                 31 Anas hottentota (Eyton, 1838) - Hottentot teal
                 32 Anas querquedula Linnaeus, 1758 - garganey
                 33 Anas discors Linnaeus, 1766 - blue-winged teal
                 34 Anas cyanoptera Vieillot, 1816 - cinnamon teal
                 35 Anas platalea Vieillot, 1816 - red shoveler
                 36 Anas smithii (Hartert, 1891) - Cape shoveler
                 37 Anas rhynchotis Latham, 1802 - Australasian shoveler
                 38 Anas clypeata Linnaeus, 1758 - northern shoveler