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 Psittacidae Illiger, 1811 - cockatoos and parrots Cacatuinae del Hoyo et al., 2014 see Family Cacatuidae Gray, 1840 Cacatua Vieillot, 1817 Cacatua sulphurea (Gmelin, 1788) - yellow-crested cockatoo Cacatua sulphurea sulphurea (Gmelin, 1788)