Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Falconiformes Sharpe, 1874
           Family Accipitridae Vieillot, 1816 - secretary bird, osprey, kites, hawks and eagles
             Genus Spilornis Gray, 1840
               1 Spilornis cheela (Latham, 1790) - crested serpent-eagle
               2 Spilornis rufipectus Gould, 1858 - Sulawesi serpent-eagle
               3 Spilornis kinabaluensis Sclater, 1919 - mountain serpent-eagle
               4 Spilornis klossi Richmond, 1902
               5 Spilornis elgini (Blyth, 1863) - Andaman serpent-eagle