Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Cuculiformes Wagler, 1830 - cuckoos and plantain-eaters
         Family Cuculidae Vigors, 1825 - cuckoos
           Subfamily Cuculinae Vigors, 1825
             Genus Chrysococcyx Boie, 1826
               Chrysococcyx xanthorhynchus (Horsfield, 1821) - violet cuckoo
                 1 Chrysococcyx xanthorhynchus xanthorhynchus (Horsfield, 1821)
                 2 Chrysococcyx xanthorhynchus amethystinus (Vigors, 1831)