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] Gruiformes Bonaparte, 1854
         ?Family Otidae - bustards see Family Otididae Gray, 1840
           Genus Ardeotis Le Maout, 1853
             1 Ardeotis arabs (Linnaeus, 1758) - Arabian bustard
             2 Ardeotis kori (Burchell, 1822) - Kori bustard
             3 Ardeotis nigriceps (Vigors, 1831) - Indian bustard
             4 Ardeotis australis (Gray, 1829) - Australian bustard