Cassowaries (Indonesian: kasuari, Biak: man suar 'bird strong',[4][5] Tok Pisin: muruk, Papuan:[citation needed] kasu weri 'horned head'[6] ) are flightless birds of the genus Casuarius in the order Casuariiformes. They are classified as ratites: flightless birds without a keel on their sternum bones. Cassowaries are native to the tropical forests of New Guinea (Western New Guinea and Papua New Guinea), The Moluccas (Seram and Aru Islands), and northeastern Australia.