What is "palm cockatoo"

Cockatoo \Cock`a*too"\ (k[o^]k`[.a]*t[=oo]"), n. [Malayan kakat[=u]a.] (Zo["o]l.) A bird of the Parrot family, of the subfamily Cacatuin[ae], having a short, strong, and much curved beak, and the head ornamented with a crest, which can be raised or depressed at will. There are several genera and many species; as the broad-crested cockatoo ( Plictolophus cristatus or Cacatua cristatus), the sulphur-crested ( Cacatua galerita or Plictolophus galeritus), etc. The palm cockatoo or great black cockatoo of Australia is Probosciger aterrimus (formerly Microglossus aterrimus).

n. ''Probosciger aterrimus'', a large smoky-grey or black parrot of the cockatoo family native to New Guinea and far north Queensland, Australia, with a large black beak and prominent red cheek patches.

The palm cockatoo (Probosciger aterrimus), also known as the goliath cockatoo or great black cockatoo, is a large smoky-grey or black parrot of the cockatoo family native to New Guinea and far north Queensland, Australia. It has a very large black beak and prominent red cheek patches.