Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
               Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                 Order Psittaciformes Wagler, 1830 - parrots
                   Family Psittacidae Illiger, 1811 - cockatoos and parrots
                     Subfamily Nestorinae Bonaparte, 1849 see Family Nestoridae Bonaparte, 1850
                       Genus Nestor Lesson, 1830
                         1 Nestor meridionalis (Gmelin, 1788) - New Zealand kaka
                         2 Nestor notabilis Gould, 1856 - kea
                         3 ‡Nestor productus (Gould, 1836) - Norfolk Island kaka