There are 5 sub-species of red-tailed black cockatoos, and while some are common, others are not.
They are:
- South-eastern red-tailed black cockatoo, C. b. graptogyne, (endangered - only found in southwestern Victoria and southeastern South Australia)
- Forest red-tailed black cockatoo, C. b. naso(near threatened)
- C. b. banksii found across Queensland
- Great-billed Cockatoo or C. b. macrorhynchus(found across Australia)
- C. b. samueli found across the central coastal region of Western Australia, and parts of Queensland and western NSW.
There are believed to be about only 1000 of the endangered South-eastern red tailed black cockatoos left in Australia, in the wild.
