Yellow-tailed Black Cockatoo Calyptorhynchus funereus

Juvenile male - upper beak turned black; lower beak still light
Yellow-tailed Black Cockatoo female
The Yellow-tailed Black Cockatoo is the largest species of cockatoo, reaching 65 cm length (5 cm more than the Goliath). It has a short crest and long tail and comes from east/southeast Australia.
Yellow-tailed Black Cockatoo female
Yellow-tailed Black Cockatoo male
Males (above right) have a dark beak and pink eye-rings; females (above left) and juveniles have a light beak and grey eye-rings. Females have less extensive but brighter yellow cheeks.
Yellow-tailed Black Cockatoo female Cracking an almond nut takes time and skill
Yellow-tailed Black Cockatoo - the nutcracker Held with tongue and "hand" leaves beak free to work on shell
The nutcracker She changes "hand" (most parrots are left-footed)
The nutcracker Still held firmly with tongue and "hand" while beak digs in
The nutcracker Success at last - she breaks the shell open
Yellow-tailed Black Cockatoo female and prises out the nut
The nutcracker
The nutcracker
Female (light beak and dark eye-ring, also brighter yellow cheek)
Yellow-tailed Black Cockatoo female
Male (dark beak and light eye-ring)