The Ostrich, Struthio camelus, is a large flightless bird native to Africa. It is the only living species of its family and its genus. Ostriches share the order Struthioniformes with the kiwis, Emus, and other ratites. It is distinctive in its appearance, with a long neck and legs and the ability to run at maximum speeds of about 70 km/h (45 mph), the top land speed of any bird.