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 Passerae see Superorder Passerimorphae Sibley et al., 1988
         Superorder Cuculimorphae Sibley et al., 1988
           Order Cuculiformes Wagler, 1830 - cuckoos and plantain-eaters
             Infraorder Cuculides see Order Cuculiformes Wagler, 1830
               Parvorder Cuculida see Order Cuculiformes Wagler, 1830
                 Superfamily Cuculoidea Vigors, 1825 see Order Cuculiformes Wagler, 1830
                   Family Cuculidae Vigors, 1825 - cuckoos
                     Genus Eudynamys Vigors & Horsfield, 1827
                       1 Eudynamys scolopacea (C. Linnaeus, 1758) - Asian koel see Eudynamys scolopaceus (C. Linnaeus, 1758)
                       2 Eudynamys melanorhyncha Muller, 1843 - black-billed koel see Eudynamys scolopaceus melanorhynchus Müller, 1843
                       3 Eudynamys cyanocephala (Latham, 1802) - Australian koel see Eudynamys scolopaceus cyanocephalus (Latham, 1802)
                       4 Eudynamys taitensis (Sparrman, 1787) - long-tailed koel see Urodynamis taitensis (Sparrman, 1787)