Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
               Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                 Order Falconiformes Sharpe, 1874
                   Family Accipitridae Vieillot, 1816 - secretary bird, osprey, kites, hawks and eagles
                     Subfamily Aegypiinae see Subfamily Accipitrinae Vieillot, 1816
                       01 Genus Sarcogyps Lesson, 1842
                       02 Genus Aegypius Savigny, 1809
                       03 Genus Torgos Kaup, 1828
                       04 Genus Trigonoceps Lesson, 1842
                       05 Genus Gyps Savigny, 1809
                       06 Genus Pseudogyps Sharpe, 1873 see Genus Gyps Savigny, 1809
                       07 Genus Neophron Savigny, 1809
                       08 Genus Necrosyrtes Gloger, 1841
                       09 Genus Gypohierax Rüppell, 1836
                       10 Genus Gypaëtus Storr, 1784 see Genus Gypaetus Storr, 1784