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
                     1 Subfamily Nestorinae Bonaparte, 1849 see Family Nestoridae Bonaparte, 1850
                     2 Subfamily Psittrichasinae Joseph et al., 2012 see Subfamily Psittrichadinae
                     3 Subfamily Cacatuinae del Hoyo et al., 2014 see Family Cacatuidae Gray, 1840
                     4 Subfamily Micropsittinae
                     5 Subfamily Trichoglossinae see Family Loriinidae Selby, 1836
                     6 Subfamily Strigopinae Bonaparte, 1849
                     7 Subfamily Psittacinae Illiger, 1811 - typical parrots