Calyptorhynchus Banksii Research Articles

Red-Tailed Black Cockatoo Breeding Twice a Year in the South-West of Western Australia

SUMMARYSaunders, D. A. 1977. Red-tailed Black Cockatoo breeding twice a year in the south-west of Western Australia. Emu 77: 107–110.The distribution of the Red-tailed Black Cockatoo in the south-west of Western Australia is shown. The breeding seasons of five species of cockatoo breeding in the Three Springs area are listed. All these species have winter-spring breeding seasons. The Red-tailed Black Cockatoo is the only species that breeds in the autumn as well. Breeding data for six female Red-tailed Black Cockatoos for the four breeding seasons from late 1974 to autumn 1976 are given. A survey of the literature shows the paucity of information on breeding seasons of the Red-tailed Black Cockatoo and the need for more detailed information throughout their range is pointed out.

New Records of Red-Tailed Black Cockatoos in South-Eastern Australia with a Discussion of Their Plumages

SUMMARYLlewellyn, L. C. 1974, New records of red-tailed black cockatoos in south-eastern Australia with a discussion of their plumages. Emu 74: 249–253.New records of distribution, a nesting occurrence and the feeding of the Glossy Black Cockatoo are given. This species can readily be distinguished as adults and immatures, males and females by characters of plumage. The Red-tailed Black Cockatoo can be distinguished only as adult males or others. The two species are compared and the need for careful checking of distribution emphasized.