
Calyptorhynchus funereus .................................................... By Gideon Scheepers
Description
These
stunning birds have a generally brownish-black plumage. All the feathers
are edged with yellow. They have yellow ear-coverts. The central tail
feathers are brownish-black, and the adjacent feathers are brownish-black
with a broad yellow ban, barred with black. The iris is dark brown
and the periophthalmic ring is flesh coloured. The feet are greyish-brown
and the bill is dark grey. The female is similar to the male, but
the ear-coverts are a brighter yellow. The yellow band on the tail
feathers is more heavily spotted. Her bill is horn-coloured and the
periophthalmic ring is dark grey. The young look like the female,
but males have duller ear-coverts, whitish-yellow pannels on the tail
and greyish tinge to the bill. They grow to 58cm - 65 cm.
Range and Habitat
There
are 2 sub-species of this stunning bird, namely Calyptorhynchus
f. funereus (Yellow-tailed Cockatoo) and the Calyptorhynchus
f. xanthanotus (Tasmanian Yellow-tailed Cockatoo). They are found
in eastern Australia from central Queensland, Tasmania, and the larger
islands of the Bass Strait, Kangaroo Island, and Southeast to southern
Victoria and in Southwest Australia. They inhabit virtually all areas
with tree cover, also coastal forests, cultivated areas, plantations
and savannahs. They are seen in family groups and small flocks outside
breeding season.
Housing in Aviculture
They must be given a large aviary of around 8 x 3 x
2 m, made of metal. They can be supplied with a barrel , metal drum
or tree stump to breed in.
Breeding in Aviculture
They
seldom breed in Aviculture, and are also rare outside of Australia.
They need large aviaries and a large barrel, tree stump or metal drum
for breeding. Hens will usually lay 1 to 2 eggs and incubate them
for 29 days. They should be provided with plenty of animal protein
and greenfood during the rearing period. The young fledge after 90
days. But remain with the parents for another 60 days.
Mutations
The only mutations I am aware of is the Pied and the
Yellow, in the Yellow tailed sub spesies. If you know of more please
let me know.