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 Spilornis Gray, 1840
               Spilornis cheela (Latham, 1790) - crested serpent-eagle
                 01 Spilornis cheela cheela (Latham, 1790) - crested serpent-eagle
                 02 Spilornis cheela melanotis (Jerdon, 1844)
                 03 Spilornis cheela spilogaster (Blyth, 1852)
                 04 Spilornis cheela burmanicus Swann, 1920
                 05 Spilornis cheela ricketti Sclater, 1919
                 06 Spilornis cheela malayensis Swann, 1920
                 07 Spilornis cheela davisoni Hume, 1873
                 08 Spilornis cheela minimus Hume, 1873
                 09 Spilornis cheela perplexus Swann, 1922 - Ryukyu serpent-eagle
                 10 Spilornis cheela hoya Swinhoe, 1866
                 11 Spilornis cheela rutherfordi Swinhoe, 1870
                 12 Spilornis cheela pallidus Walden, 1872
                 13 Spilornis cheela richmondi Swann, 1922
                 14 Spilornis cheela natunensis Chasen, 1935 - Natuna serpent-eagle
                 15 Spilornis cheela sipora Chasen & Kloss, 1926 - Mentawai serpent-eagle
                 16 Spilornis cheela batu Meyer de Schauensee & Ripley, 1940
                 17 Spilornis cheela asturinus Meyer, 1884 - Nias serpent-eagle
                 18 Spilornis cheela abbotti Richmond, 1903 - Simeulue serpent-eagle
                 19 Spilornis cheela bido (Horsfield, 1821)
                 20 Spilornis cheela baweanus Oberholser, 1917
                 21 Spilornis cheela palawanensis Sclater, 1919
                 22 Spilornis cheela holospilus (Vigors, 1831)