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 Barnardius Bonaparte, 1854 [monotypic]
                 Barnardius zonarius (Shaw, 1805) - Port Lincoln parrot
                   1 Barnardius zonarius macgillivrayi (North, 1900)
                   2 Barnardius zonarius barnardi (Vigors & Horsfield, 1827)
                   3 Barnardius zonarius semitorquatus (Quoy & Gaimard, 1830)
                   4 Barnardius zonarius zonarius (Shaw, 1805)