The glossy black cockatoo (Calyptorhynchus lathami), also known as the Casuarina black cockatoo after one of their preferred food items, is the smallest member of the subfamily Calyptorhynchinae found in Australia. Adult glossy black cockatoos may reach 50 cm (20 in) in length. They are sexually dimorphic. Males are completely black in colour, excepting their prominent red tail bands; the females are dark brownish with some yellow spotting. Three subspecies are recognised.