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 Cuculiformes Wagler, 1830 - cuckoos and plantain-eaters
                   Family Cuculidae Vigors, 1825 - cuckoos
                     Subfamily Cuculinae Vigors, 1825
                       Genus Hierococcyx Müller, 1842 see Genus Cuculus Linnaeus, 1758
                         1 Hierococcyx sparverioides (Vigors, 1831) see Cuculus sparverioides Vigors, 1832
                         2 Hierococcyx varius (Vahl, 1797) see Cuculus varius Vahl, 1797
                         3 Hierococcyx vagans (S. Müller, 1845) see Cuculus vagans S. Müller, 1845
                         4 Hierococcyx fugax (Horsfield, 1821) see Cuculus fugax Horsfield, 1821