Nocturnal marsupials, such as cuscus and bandicoots, make up the majority of the mammal species, and introduced mammals include Malayan civets and wild pigs. Bird species include approximately 100 endemics with the greatest variety on the large islands of Halmahera and Seram. North Maluku has two species of endemic birds of paradise. Uniquely among the Maluku Islands, the Aru Islands have a purely Papuan fauna including kangaroos, cassowaries, and birds of paradise.