4/14/2024 0 Comments Gang cockatoo![]() Genus level cladogram of the cockatoos based on a 2023 molecular phylogenetic study by Brian Smith and collaborators. ![]() Psittacidae – African and New World parrotsĬalyptorhynchus – black cockatoos (2 species)Ĭacatua – white cockatoos and corellas (13 species) Proprietors of small agricultural undertakings are often jocularly or slightly disparagingly referred to as "cocky farmers". In Australian slang or vernacular speech, a person who is assigned to keep watch while others undertake clandestine or illegal activities, particularly gambling, may be referred to as a "cockatoo". The derivation has also been used for the family and generic names Cacatuidae and Cacatua, respectively. Seventeenth-century variants include cacato, cockatoon and crockadore, and cokato, cocatore and cocatoo were used in the eighteenth century. The word cockatoo dates from the 17th century and is derived from Dutch kaketoe, which is from Malay kakatua. Illegal trade in wild-caught birds contributes to the decline of some cockatoo species in the wild. White cockatoos are more commonly found in captivity than black cockatoos. The cockatiel is the easiest cockatoo species to maintain and is by far the most frequently kept in captivity. Some cockatoo species have been adversely affected by habitat loss, particularly from a shortage of suitable nesting hollows after large mature trees are cleared conversely, some species have adapted well to human changes and are considered agricultural pests.Ĭockatoos are popular birds in aviculture, but their needs are difficult to meet. Cockatoos are monogamous and nest in tree hollows. They often feed in large flocks, particularly when ground-feeding. The second and larger branch is formed by the genus Cacatua, comprising 11 species of white-plumaged cockatoos and four monotypic genera that branched off earlier namely the pink and white pink cockatoo, the pink and grey galah, the mainly grey gang-gang cockatoo and the large black-plumaged palm cockatoo.Ĭockatoos prefer to eat seeds, tubers, corms, fruit, flowers and insects. The five large black-coloured cockatoos of the genus Calyptorhynchus form one branch. The remaining species are in two main clades. The phylogenetic position of the cockatiel remains unresolved, except that it is one of the earliest offshoots of the cockatoo lineage. On average they are larger than other parrots however, the cockatiel, the smallest cockatoo species, is a small bird. Their plumage is generally less colourful than that of other parrots, being mainly white, grey or black and often with coloured features in the crest, cheeks or tail. The family has a mainly Australasian distribution, ranging from the Philippines and the eastern Indonesian islands of Wallacea to New Guinea, the Solomon Islands and Australia.Ĭockatoos are recognisable by the prominent crests and curved bills. Along with the Psittacoidea ( true parrots) and the Strigopoidea (large New Zealand parrots), they make up the order Psittaciformes. One assessment cited by the committee suggests that the 2019-20 fires had led to a decline in populations of 15% to 30%.A cockatoo is any of the 21 species of parrots belonging to the family Cacatuidae, the only family in the superfamily Cacatuoidea. The committee’s listing assessment for that population recommends its status remain at endangered.īut the south-eastern populations, previously unlisted, have been recommended for a vulnerable listing, in part due to the pressure on foraging habitat. There were fears for the birds on Kangaroo Island in the aftermath of the fire disaster, and concerns its status might reach critically endangered. Glossy black-cockatoos are also fire sensitive and are dependent on casuarina seeds as their food source. The southern long-nosed potoroo is another affected animal and has been recommended for a vulnerable listing. The committee has moved to quickly assess wildlife that might qualify for a threatened listing or upgraded threat status after the fire disaster.Ī decision on whether eastern koala populations should be listed as endangered is expected later this year. ![]() “Any species that’s fire sensitive is going to really struggle,” she said. She said gang-gangs needed time to recover after such a disaster, something that would be made difficult with more frequent severe bushfire seasons. “That would have potentially taken out nesting hollows and destroyed a lot of their foraging resources,” she said. Sarah Legge, a scientist who sits on the committee, said the bushfires had affected 36% of the birds’ range and about half of that had been burnt by high-severity fire. The listing assessment says increased heatwaves and fire frequency as a result of the climate emergency were increasing pressure on the species across its range, with bushfires likely to reduce the amount of nesting habitat available to the birds.
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