Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Ciconiiformes Bonaparte, 1854
         Family Threskiornithidae Richmond, 1917 - ibises and spoonbills
           Subfamily Threskiornithinae Richmond, 1917 see Family Threskiornithidae Richmond, 1917
             Genus Theristicus Wagler, 1832
               Theristicus caudatus (Boddaert, 1783) - buff-necked ibis
                 Theristicus caudatus hyperorius Todd, 1948