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 Platycercini
               Genus Northiella Mathews, 1912 [monotypic]
                 Northiella haematogaster (Gould, 1838) - bluebonnet
                   1 Northiella haematogaster haematorrhous (Bonaparte, 1856)
                   2 Northiella haematogaster haematogaster (Gould, 1838) - common bluebonnet
                   3 Northiella haematogaster pallescens (Salvadori, 1891)
                   4 Northiella haematogaster narethae (White, 1921)