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 Pionus Wagler, 1832
                 1 Pionus menstruus (Linnaeus, 1766) - blue-headed parrot
                 2 Pionus sordidus (Linnaeus, 1758) - red-billed parrot
                 3 Pionus maximiliani (Kuhl, 1820) - scaly-headed parrot
                 4 Pionus tumultuosus (Tschudi, 1844) - speckle-faced parrot
                 5 Pionus senilis (Spix, 1824) - white-crowned parrot
                 6 Pionus chalcopterus (Fraser, 1841) - bronze-winged parrot
                 7 Pionus fuscus (Statius Müller, 1776) - dusky parrot