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 Falconidae Vigors, 1824 - falcons, caracaras
                     Subfamily Polyborinae Lafresnaye, 1839
                       Genus Polyborus Vieillot, 1816, nom. illeg. see Genus Caracara Merrem, 1826
                         1 Polyborus plancus (J.F. Miller, 1777) - crested caracara see Caracara plancus (Miller, 1777)
                         2 ‡Polyborus lutosus Ridgway, 1876 - Guadalupe caracara see Caracara lutosa (Ridgway, 1876)