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 Psittaculini Vigors, 1825
               Genus Geoffroyus Bonaparte, 1850
                 Geoffroyus simplex (Meyer, 1874) - blue-collared parrot
                   1 Geoffroyus simplex simplex (Meyer, 1874)
                   2 Geoffroyus simplex buergersi Neumann, 1922