Dromaius is a genus of ratite present in Australia. There is one extant species, Dromaius novaehollandiae, commonly known as the emu.
Dromaius
Illustration by Charles-Alexandre Lesueur, based on life-drawings made during Baudin's journey and specimens kept at Jardin des Plantes. The animals were thought to be a male and female of the same species, but are now believed to be a Kangaroo Island emu and King Island emu
A ratite is any of a group of mostly flightless birds within the infraclass Palaeognathae. They are mostly large, long-necked, and long-legged, the exception being the kiwi, which is also the only nocturnal extant ratite.
Ratite
Comparison of a kiwi, ostrich, and Dinornis, each with its egg
Ostrich
Ostrich herd (S. camelus massaicus)