This order comprises three families, Dromaiidae (emus) with only a single species Dromaius novaehollandiae (Emu), Casuariidae (cassowaries) with three species in the single genus Casuarius, and Apterygidae (kiwis) with five species in New Zealand.

Northern Cassowary (Casuarius unappendicularius)


Emu (Dromaius novaehollandiae), Foto: Mary Yalda

Emu (Dromaius novaehollandiae), Foto: Mary Yalda


Baker, A.J., O. Haddrath, J.D. McPherson, and A. Cloutier (2014), Genomic Support for a MoaTinamou Clade and Adaptive Morphological Convergence in

Flightless Ratites, Mol. Biol. Evol. 31, 1686-1696. (abstract)

Pratt, T.K. and B.N. Beehler (2014), "Birds of New Guinea", 2nd edition,  Princeton University Press (link)