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 Buteoninae Vigors - buzzards & eagles see Subfamily Accipitrinae Vieillot, 1816
                       Genus Hieraeëtus see Genus Hieraaetus Kaup, 1844
                         1 Hieraeëtus fasciatus Vieillot, 1822 see Hieraaetus fasciatus (Vieillot, 1822)
                         2 Hieraeëtus pennatus J.F. Gmelin, 1788 see Hieraaetus pennatus (Gmelin, 1788)
                         3 Hieraeëtus ayresii (Gurney, 1862) see Hieraaetus ayresii (Gurney, 1862)
                         4 Hieraeëtus kienerii (E. Geoffroy Saint-Hilaire, 1835) see Hieraaetus kienerii (de Sparre, 1835)
                         5 Hieraeëtus morphnoides (Gould, 1840) see Hieraaetus morphnoides (Gould, 1841)