The EMU is a large, flightless bird native to Australia and the only living member of the genus Dromaius. It is also known as the Australian Emu and is the second-largest living bird by height after the ostrich. The EMU is a RATITE, a group of flightless birds that includes the ostrich, RHEA, cassowary, and kiwi. The RHEA is a species of RATITE native to South America, while the RATITE is an order of birds that are flightless and have flat breastbones.