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 Cuculus Linnaeus, 1758
                       01 Cuculus crassirostris (Walden, 1872) - Sulawesi hawk-cuckoo
                       02 Cuculus sparverioides Vigors, 1832 - large hawk-cuckoo
                       03 Cuculus varius Vahl, 1797 - common hawk-cuckoo
                       04 Cuculus vagans S. Müller, 1845 - moustached hawk-cuckoo
                       05 Cuculus fugax Horsfield, 1821 - Hodgson's hawk-cuckoo
                       06 Cuculus solitarius Stephens, 1815 - red-chested cuckoo
                       07 Cuculus clamosus Latham, 1802 - black cuckoo
                       08 Cuculus micropterus Gould, 1837[1838] - Indian cuckoo
                       09 Cuculus canorus Linnaeus, 1758 - common cuckoo
                       10 Cuculus gularis Stephens, 1815 - African cuckoo
                       11 Cuculus saturatus Blyth, 1843 - Oriental cuckoo
                       12 Cuculus poliocephalus Latham, 1790 - lesser cuckoo
                       13 Cuculus rochii Hartlaub, 1863 - Madagascar cuckoo
                       14 Cuculus pallidus (Latham, 1802) - pallid cuckoo