Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
               Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                 Order Anseriformes Wagler, 1831 - waterfowl and screamers
                   Family Anatidae Vigors, 1825 - ducks, geese, swans
                     Subfamily Anatinae Vigors, 1825 - pond ducks
                       Tribe Oxyurini see Subfamily Anatinae Vigors, 1825
                         Genus Oxyura Bonaparte, 1828 - blue-billed duck
                           1 Oxyura dominica (C. Linnaeus, 1766) - masked duck see Nomonyx dominicus (Linnaeus, 1766)
                           2 Oxyura leucocephala (Scopoli, 1769) - white-headed duck
                           3 Oxyura jamaicensis (Gmelin, 1789) - ruddy duck
                           4 Oxyura vittata (Philippi, 1860) - lake duck
                           5 Oxyura maccoa (Eyton, 1838) - Maccoa duck
                           6 Oxyura australis Gould, 1837 - blue-billed duck