 Natura - nature |
| Mundus Plinius - physical world |
| Naturalia - natural bodies |
| Biota |
| Domain Eukaryota Chatton, 1925 - eukaryotes |
| Unikonta |
| Opisthokonta Cavalier-Smith, 1987 |
| Holozoa |
| Kingdom Animalia C. Linnaeus, 1758 - animals |
| Epitheliozoa Ax, 1996 |
| Eumetazoa Bütschli, 1910 - eumetazoans |
| Bilateria Hatschek, 1888 - bilaterians |
| Eubilateria Ax, 1987 |
| Deuterostomia Grobben, 1908 - deuterostomes |
| Phylum Chordata Bateson, 1885 - chordates |
| Subphylum Vertebrata Cuvier, 1812 - vertebrates |
| Infraphylum Gnathostomata auct. - jawed vertebrates |
| Superclass Tetrapoda Goodrich, 1930 - tetrapods |
| Reptiliomorpha |
| Batrachosauria |
| Amniota |
| Reptilia |
| Eureptilia |
| Romeriida |
| Diapsida Osborn, 1903 |
| Eosuchia Broom, 1914 |
| Neodiapsida Gauthier, 1984 |
| Sauria |
| Archosauromorpha |
| Archosauria |
| Avesuchia |
| Avemetatarsalia Benton, 1999 |
| Ornithodira |
| Dinosauromorpha |
| Dinosauriformes |
| Dinosauria Owen, 1842b |
| Saurischia Seeley, 1887a |
| Eusaurischia Padian et al., 1999 |
| Theropoda Marsh, 1881a |
| Tetanurae Gauthier, 1986 |
| Avetheropoda Paul, 1988a |
| Coelurosauria von Huene, 1914a |
| Tyrannoraptora |
| Maniraptoriformes T. Holtz, 1996a |
| Maniraptora Gauthier, 1986 |
| Paraves Sereno, 1997 |
| Avialae Gauthier, 1986 |
| Class Aves C. Linnaeus, 1758 - birds |
| Pygostylia |
| Ornithothoraces Chiappe, 1995 |
| Ornithuromorpha Chiappe, 2002 |
| Ornithurae Haeckel, 1866 |
| Carinatae Merrem, 1813 |
| Subclass Neornithes Gadow, 1893 |
| Cohort Neognathae Pycraft, 1900 |
| Subcohort Neoaves Sibley et al., 1988 |
| Division Terrestrornithes B.C. Livezey & R.L. Zusi, 2007 |
| Subdivision Dendrornithes Verheyen, 1961 |
| Section Raptores Baird, 1858 |
| Superorder Falconimorphae Seebohm, 1890 |
| Order Falconiformes™
Sharpe, 1874 |
| Suborder Accipitres (C. Linnaeus, 1758) - hawks |
| Infraorder Falconides Sharpe, 1874 |
| Superfamily Accipitroidea Vieillot, 1816 |
| Family Accipitridae™
Vieillot, 1816 - secretary bird, osprey, kites, hawks and eagles |
 Subfamily Accipitrinae™
Vieillot, 1816 - hawks, eagles |
 Genus Aviceda Swainson, 1836 |
| Genus Leptodon Sundevall, 1835[1836] |
| Genus Chondrohierax Lesson, 1843 |
| Genus Henicopernis G.R. Gray, 1859 |
| Genus Pernis Cuvier, 1816[1817] |
| Genus Lophoictinia Kaup, 1847 - square-tailed kite |
| Genus Hamirostra T. Brown, 1846 - black-breasted buzzard |
| Genus Elanoides Vieillot, 1818 |
| Genus Macheiramphus Bonaparte, 1850 |
| Genus Gampsonyx Vigors, 1825 |
| Genus Elanus Savigny, 1809 |
| Genus Chelictinia Lesson, 1843 |
| Genus Rostrhamus Lesson, 1830 |
| Genus Harpagus Vigors, 1824 |
| Genus Ictinia Vieillot, 1816 |
| Genus Milvus Lacépède, 1799 - black kite |
| Genus Haliastur Selby, 1840 - whistling kite |
| Genus Haliaeetus Savigny, 1809 - white-bellied sea-eagle |
| Genus Ichthyophaga Lesson, 1843 |
| Genus Circaetus™
Vieillot, 1816 |
| Genus Terathopius Lesson, 1830 |
| Genus Spilornis G.R. Gray, 1840 |
| Genus Dryotriorchis Shelley, 1874 |
| Genus Eutriorchis Sharpe, 1875 |
| Genus Circus Lacépède, 1799 |
| Genus Polyboroides A. Smith, 1829 |
| Genus Melierax G.R. Gray, 1840 |
| Genus Micronisus G.R. Gray, 1840 |
| Genus Accipiter™
Brisson, 1760 |
| Genus Erythrotriorchis Sharpe, 1875 |
| Genus Megatriorchis Salvadori & D'Albertis, 1875 |
| Genus Urotriorchis Sharpe, 1874 |
| Genus Kaupifalco Bonaparte, 1854, nom. nud. |
| Genus Butastur Hodgson, 1843 |
| Genus Geranospiza Kaup, 1847, nom. nov. |
| Genus Leucopternis Kaup, 1847 |
| Genus Buteogallus Lesson, 1830 |
| Genus Parabuteo Ridgway, in Baird et al., 1874 |
| Genus Busarellus Lafresnaye, 1839 |
| Genus Geranoaetus Kaup, 1844 |
| Genus Harpyhaliaetus Lafresnaye, 1842 |
| Genus Asturina Vieillot, 1816 |
| Genus Buteo de Lacépède, 1799 |
| Genus Morphnus Dumont, 1816 |
| Genus Harpia Vieillot, 1816 |
| Genus Harpyopsis Salvadori, 1875 |
| Genus Pithecophaga Ogilvie-Grant, 1896 |
| Genus Ictinaetus Blyth, 1843 |
| Genus Aquila Brisson, 1760 |
| Genus Hieraaetus Kaup, 1844 - little eagle |
| Genus Polemaetus Heine, in Heine & Reichenow, 1890 |
| Genus Spizastur G.R. Gray, 1841 |
| Genus Lophaetus Kaup, 1847 |
| Genus Spizaetus Vieillot, 1816 |
| Genus Stephanoaetus W.L. Sclater, 1922 |
| Genus Oroaetus Ridgway, 1920 |