Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
     Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
       Parvclass Passerae see Superorder Passerimorphae Sibley et al., 1988
         Superorder Passerimorphae Sibley et al., 1988
           Order Ciconiiformes Bonaparte, 1854
             Suborder Ciconii see Suborder Ciconiae Bonaparte, 1854
               Infraorder Falconides Sharpe, 1874
                 Parvorder Accipitrida see Superfamily Accipitroidea Vieillot, 1816
                   Family Accipitridae Vieillot, 1816 - secretary bird, osprey, kites, hawks and eagles
                     Subfamily Accipitrinae Vieillot, 1816 - hawks, eagles
                       Genus Spizaetus Vieillot, 1816
                         01 Spizaetus africanus (Cassin, 1865) - Cassin's hawk-eagle
                         02 Spizaetus cirrhatus (Gmelin, 1788) - changeable hawk-eagle
                         03 Spizaetus nipalensis (Hodgson, 1836) - mountain hawk-eagle
                         04 Spizaetus alboniger (Blyth, 1845) - Blyth's hawk-eagle
                         05 Spizaetus bartelsi Stresemann, 1924 - Javan hawk-eagle
                         06 Spizaetus lanceolatus Temminck & Schlegel, 1844 - Sulawesi hawk-eagle
                         07 Spizaetus philippensis Gould, 1863 - Philippine hawk-eagle
                         08 Spizaetus nanus Wallace, 1868 - Wallace's hawk-eagle
                         09 Spizaetus tyrannus (Wied-Neuwied, 1820) - black hawk-eagle
                         10 Spizaetus ornatus (Daudin, 1800) - ornate hawk-eagle