Neornithes Gadow, 1893 - living birds
Status: extant; Count: [s] 23o;193f;2136g;9595s;8ss; ‡1f;26g;131s
   Neornithes Gadow, 1893 - living birds
  Status: extant; Count: [s] 23o;193f;2136g;9595s;8ss; ‡1f;26g;131s
     Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
    Status: extant; Count: [s] 23o;187f;2121g;9539s; ‡1f;26g;128s
       Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
      Status: extant; Count: [s] 23o;187f;2121g;9539s; ‡1f;26g;128s
         Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
        Status: extant; Count: [*] 21o;179f;1992g;9095s; ‡1f;23g;120s
           Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
          Status: extant; Count: [*] 21o;179f;1992g;9095s; ‡1f;23g;120s
             Order [Psittaciformes] Wagler, 1830 [monotypic] - parrots
            Status: extant; Count: [*†*] 1f;83g;352s;566ss; ‡2g;12s;8ss [31 Jan 2019]
               Family Psittacidae Illiger, 1811 - cockatoos and parrots
              Status: extant; Count: [*†*] 83g;352s;566ss; ‡2g;12s;8ss [31 Jan 2019]
                 Subfamily Cacatuinae del Hoyo et al., 2014 see Family Cacatuidae Gray, 1840
                Status: extant; Count: [*] 6g;21s;35ss [19 Jan 2019]
                   Genus Cacatua Vieillot, 1817
                  Status: extant; Count: [*] 12s;17ss [19 Jan 2019]
                     Cacatua sulphurea (Gmelin, 1788) - yellow-crested cockatoo
                    Status: extant; Count: [*] 4ss [19 Jan 2019]
                       Cacatua sulphurea citrinocristata (Fraser, 1844)
                      Status: extant; Count: -