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 Ciconiiformes Bonaparte, 1854
                   Family Threskiornithidae Richmond, 1917 - ibises and spoonbills
                     Subfamily Threskiornithinae Richmond, 1917 see Family Threskiornithidae Richmond, 1917
                       Genus Geronticus Wagler, 1832
                         1 Geronticus eremita (Linnaeus, 1758) - northern bald ibis
                         2 Geronticus calvus (Boddaert, 1783) - southern bald ibis