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A perfect example of a normal grey cockatiel. The normal grey or wild-type cockatiel is one whose colour genes have no mutations. A normal grey cockatiel's plumage is primarily grey with prominent white flashes on the outer edges of each wing.
Bonaparte had identified it as a new species from Lear's accurate painting in his book, which had been captioned as a hyacinthine macaw. Two other parrot species named for Lear, the cockatoo Lapochroa leari (now Major Mitchell's cockatoo) and the parakeet Platycercus leari (now crimson rosella) are no longer accepted under those names. [47]
The species complex was first described by the ornithologist John Latham in 1790 as Psittacus banksii, [4] commemorating English botanist Sir Joseph Banks.The red-tailed black cockatoo also has the distinction of being the first bird from Eastern Australia illustrated by a European, as a female, presumably collected at Endeavour River in north Queensland, was sketched by Banks' draughtsman ...
They are all mostly black in colour, and the taxa may be differentiated partly by size and partly by small areas of red, grey, and yellow plumage, especially in the tail feathers. Studies based on the mitochondrial DNA 12S gene fragment suggested that other sexually dichromatic species, the gang-gang cockatoo and the cockatiel may be the ...
The glossy black cockatoo's closest relative is the red-tailed black cockatoo; the two species form the genus Calyptorhynchus. [2] They are distinguished from the other black cockatoos of the genus Zanda by different tail colour and head pattern, significant sexual dimorphism , and differences in two juvenile call types, a squeaking begging ...
The cockatiel is alternatively placed basal to all other cockatoo species, [13] [23] as the sister taxon to the black cockatoo species of the genus Calyptorhynchus [16] [22] [24] or as the sister taxon to a clade consisting of the white and pink cockatoo genera as well as the palm cockatoo. [14]
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