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
       [Order] Passeriformes Linnaeus, 1758
         oscines see Suborder Oscines
           "Corvida" - corvidans see Parvorder Corvida Sibley et al., 1988
             Family Pachycephalidae Swainson, 1831 - whistlers
               1 Genus Pachycare Gould, 1876 [monotypic]
               2 Genus Rhagologus Stresemann & Paludan, 1934 [monotypic]
               3 Genus Hylocitrea Mathews, 1925 [monotypic]
               4 Genus Coracornis Riley, 1918 [monotypic]
               5 Genus Aleadryas Iredale, 1956 [monotypic]
               6 Genus Pachycephala Vigors, 1825