Greater Sulphur-crested Cockatoo

Cacatua galerita galerita, commonly known as the "greater sulphur-crested cockatoo", is a large white parrot that belongs to the family Cacatuidae. It is one of four subspecies, this one being endemic to Australia's east coast from Cape York in FNQ to Tasmania, and west to Adelaide (see references). It has a dark grey-black bill, a distinctive sulphur-yellow crest and a yellow wash on the underside of the wings. Sexes are similar, although the female can be separated at close range by its red-brown eye (darker brown in the male). Juvenile birds resemble the adults. This is a noisy and conspicuous cockatoo, both at rest and in flight. In some parts of Australia, these birds can be very numerous and may cause damage to cereal and fruit crops, newly planted tree seedlings, and soft timber on houses, decking, and outdoor furniture. PS: What is a group of cockatoos called? The proper term for a group of cockatoos, as defined in the Macquarie (dictionary?), is "a bloody nuisance!" I laughed out loud when I read that, and despite the sentiment being accurate, it is not necessarily true! I think the correct collective noun for a group of cockatoos is "a crackle".