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 [Psittaciformes] Wagler, 1830 [monotypic] - parrots
         Family Psittacidae Illiger, 1811 - cockatoos and parrots
           Subfamily Psittacinae Illiger, 1811 - typical parrots
             Tribe Arini Gray, 1840
               Genus Amazona Lesson, 1830
                 Amazona ochrocephala (Gmelin, 1788) - yellow-crowned parrot
                   1 Amazona ochrocephala magna Monroe & Howell, 1966
                   2 Amazona ochrocephala panamensis (Cabanis, 1874)
                   3 Amazona ochrocephala nattereri (Finsch, 1865)
                   4 Amazona ochrocephala xantholaema Berlepsch, 1913
                   5 Amazona ochrocephala ochrocephala (Gmelin, 1788)