Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Psittaciformes Wagler, 1830 - parrots
           Family Psittacidae Illiger, 1811 - cockatoos and parrots
             1 Subfamily Loriinae (Selby, 1836) see Family Loriinidae Selby, 1836
             2 Subfamily Cacatuinae del Hoyo et al., 2014 see Family Cacatuidae Gray, 1840
             3 Subfamily Nymphicinae Astuti, 2004 see Subfamily Cacatuinae del Hoyo et al., 2014
             4 Subfamily Micropsittinae
             5 Subfamily Psittacinae Illiger, 1811 - typical parrots
             6 Subfamily Strigopinae Bonaparte, 1849