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] Falconiformes Sharpe, 1874
         Family Accipitridae Vieillot, 1816 - secretary bird, osprey, kites, hawks and eagles
           Subfamily Accipitrinae Vieillot, 1816 - hawks, eagles
             Genus Pernis Cuvier, 1816
               Pernis ptilorhynchus (Temminck, 1821)
                 1 Pernis ptilorhynchus orientalis Taczanowski, 1891
                 2 Pernis ptilorhynchus ruficollis Lesson, 1830
                 3 Pernis ptilorhynchus torquatus Lesson, 1830
                 4 Pernis ptilorhynchus ptilorhynchus (Temminck, 1821)
                 5 Pernis ptilorhynchus palawanensis Stresemann, 1940
                 6 Pernis ptilorhynchus philippensis Mayr, 1939