Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893 Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988 Parvclass Passerae see Superorder Passerimorphae Sibley et al., 1988 Superorder Psittacimorphae Huxley, 1867 Order Psittaciformes Wagler, 1830 - parrots Family Psittacidae Illiger, 1811 - cockatoos and parrots