Forest Red-tailed Black CockatooForest Red-tailed Black Cockatoo Calyptorhynchus banksii naso Pair of Forest Red-tailed Black Cockatoos Image copyright Tony Kirkby, WA Museum Download Forest Red-tailed Black Cockatoo factsheet [PDF 372kb] Other Names Red-tailed Black Cockatoo. The south-western population naso (referring to its large bill) was named by John Gould in 1837. Known to the Noongar people as ‘Karrak’. Threatened Status “Listed Vulnerable: Schedule 1 – Western Australian Wildlife Conservation Act”. “Vulnerable: under Federal Environmental Protection and Biodiversity Conservation Act”. It was formerly common, but is now rare to uncommon and patchily distributed over a range which has become markedly reduced. Usually seen in pairs or small flocks, seldom large flocks (up to 200). It has declined due to destruction of forests and woodlands, also competition for nest hollows with native and exotic species and the impact of fire. There are three subspecies of Red-tailed Black Cockatoo in Western Australia. Only the south-western population naso is listed as Vulnerable. Description Length 53–55 cm. Weight 600–610 g. Adult male Male Forest Red-tailed Black Cockatoo Image copyright Keith Lightbody Glossy black except for bright orange-red band towards tip of tail, bill dark grey or blackish. Adult female Female Forest Red-tailed Black Cockatoo Image copyright Keith Lightbody Glossy black, the head and wing coverts spotted with pale yellow; breast and belly barred with orange-yellow; tail narrowly banded with red and orange-yellow (more orange) on undertail coverts; bill pale greyish white. Juvenile and immature Immature male Forest Red-tailed Black Cockatoo Image copyright Keith Lightbody Similar to female except for less pale yellow spots on head, cheeks and wings, dull pale yellow bars on breast and belly, outer tail feathers brightly barred with red or orange red (little or no yellow) and bill dark grey or blackish. Voice Loud harsh cries “Karee”, “Karrak” or “Krar-raak” also “chet” sounds and harsh nasal wheezing. Male breeding call is a repeated mechanical “waa-waa”. Life span 25–50 years. Habitat and food Eucalypt forests. Feeds on seeding Marri, Jarrah, Blackbutt, Karri, Sheoak and Snottygobble, also some ornamental eucalypts and introduced Cape Lilac. Threats to the species Destruction of forests, fires in spring breeding season, feral European honey bees, expansion of Australian Shelduck and Australian Wood Duck which takes over nesting hollows, also vehicle strikes. Distribution This subspecies occurs in the humid and subhumid south-west; mainly in hilly interior, north to Gingin (formerly to Dandaragan) and east to Mt Helena (formerly to Toodyay), Christmas Tree Well near Brookton, North Bannister (formerly to Wandering), Mt Saddleback, Kojonup, Rocky Gully, upper King River and east to the Green Range. It is endemic to Western Australia. Breeding Nesting in hollows of Marri, Jarrah, Wandoo, Karri and Bullich trees. Eggs laid on wood chips at the bottom of the hollow in March-December; clutch 1 (rarely 2). Incubation period 29–31 days and only the female incubates and broods the chick. Hatchlings covered in sparse yellow down. AttachmentSize Forest Red-tail Black Cockatoo - English - Info Sheet.pdf357.73 KB Forest Red-tail Black Cockatoo - Arabic language اللغة العربية- Info Sheet.pdf483 KB Forest Red-tail Black Cockatoo - Chinese Simplified - Info Sheet.pdf433.99 KB Forest Red-tail Black Cockatoo - Chinese Traditional - Info Sheet.pdf490.11 KB Forest Red-tail Black Cockatoo - Dutch - Info Sheet.pdf359.35 KB Forest Red-tail Black Cockatoo - French - Info Sheet.pdf435.1 KB Forest Red-tail Black Cockatoo - German - Info Sheet.pdf364.61 KB Forest Red-tail Black Cockatoo - Indonesian - Info Sheet.pdf386.67 KB Forest Red-tail Black Cockatoo - Italian - Info sheet.pdf361.74 KB Forest Red-tail Black Cockatoo - Japanese - Info Sheet.pdf454.34 KB Forest Red-tail Black Cockatoo - Korean - Info Sheet.pdf475.51 KB Forest Red-tail Black Cockatoo - Polish - Info Sheet.pdf382.69 KB Forest Red-tail Black Cockatoo - Português Brasil - Info sheet.pdf365.43 KB Forest Red-tail Black Cockatoo - Spanish - Info Sheet.pdf366.23 KB