Clades:
Otidiformes;
Columbaves;
Aves;
Sauropsida;
Animals;
Kingdoms.
Members: x Ardeotis arabs; x Chlamydotis macqueenii; x Eupodotis afra; x Houbaropsis bengalensis; x Lissotis hartlaubii; x Neotis denhami; x Otis tarda; x Sypheotides indicus; x Tetrax tetrax.