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 Ciconiides see Suborder Ciconiae Bonaparte, 1854
                 Parvorder Ciconiida see Suborder Ciconiae Bonaparte, 1854
                   Superfamily Threskiornithoidea Richmond, 1917
                     Family Threskiornithidae Richmond, 1917 - ibises and spoonbills
                       01 Genus Eudocimus Wagler, 1832
                       02 Genus Phimosus Wagler, 1832
                       03 Genus Plegadis Kaup, 1829
                       04 Genus Cercibis Wagler, 1832
                       05 Genus Theristicus Wagler, 1832
                       06 Genus Mesembrinibis Peters, 1930
                       07 Genus Bostrychia Reichenbach, 1853
                       08 Genus Geronticus Wagler, 1832
                       09 Genus Lophotibis Reichenbach, 1853
                       10 Genus Threskiornis Gray, 1842
                       11 Genus Pseudibis Hodgson, 1844
                       12 Genus Nipponia Reichenbach, 1850
                       13 Genus Platalea Linnaeus, 1758
                       14 Genus Ajaia Reichenbach, 1852