The emu (Dromaius novaehollandiae) is the second-largest living bird by height, after its ratite relative, the ostrich. It is endemic to Australia where it is the largest native bird and the only extant member of the genus Dromaius. Cassowaries are shy birds that are found in the deep forest. They are adept at disappearing long before a human knows they were there. The southern cassowary of the far north Queensland rain forests is not well studied, and the northern and dwarf cassowaries even less so. Females are larger and more brightly coloured than the males. Adult southern cassowaries are 1.5 to 1.8 m (5 to 6 ft) tall, although some females may reach 2 m (6.6 ft), and weigh 58.5 kg (130 lb).