(C.) l. halmaturinus The glossy black cockatoo (Calyptorhynchus lathami), is the smallest member of the subfamily Calyptorhynchinae found in eastern Australia.

Males are blackish brown, except for their prominent sub-terminal red tail bands; the females are dark brownish with idiosyncratic yellow marking around the neck and prominent sub-terminal tail band of red with black bars.

[2] They are distinguished from the other black cockatoos of the genus Zanda by different tail colour and head pattern, significant sexual dimorphism, and differences in two juvenile call types, a squeaking begging call and a vocalization when swallowing food.

[2][3] Three subspecies were proposed by Schodde et al. in 1993,[4] although in 2002 parrot expert Joseph Forshaw had reservations due to their extremely minimal differences.

The birds are found in open forest and woodlands, and usually feed on seeds of the she-oak (Casuarina spp.