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Two to three eggs are laid and incubation lasts between 25–27 days. Both parents incubate the eggs and raise the nestlings. The nestling period is between 9 and 12 weeks, and the young fledglings remain with their parents for a number of months after fledging. [5] Sulphur-crested cockatoos have a range of visually observable expressions.
The breeding season of this cockatoo is mainly from September to January. The birds build their nests in a tree hollow or rock crevice. The female lays 2–3 white oval eggs, which hatch after a period of 30 days. Both parents incubate the eggs and in turn provide for the chicks. The young fledge after about 75 days. [citation needed]
There are 21 species of cockatoos, [4] with the greater sulphur-crested cockatoo belonging to the genus Cacatua, the white cockatoos, of which there are 11 species. [4] Of the four subspecies, it is most closely related to the Mathews' cockatoo. Many of their genetic traits cannot be distinguished as exclusive to either one subspecies, and ...
The Tanimbar corella (Cacatua goffiniana), also known as Goffin's cockatoo or Tanimbar cockatoo, is a species of cockatoo endemic to forests of Yamdena, Larat, and Selaru, all islands in the Tanimbar Islands archipelago in Indonesia. [4] [5] [6] It has been introduced to the Kai Islands, Indonesia, [6] Puerto Rico, and Singapore. [1]
It is white, with a large yellow crest that it can raise. It is 45–55 cm (18–22 in) long, weighing 550–600 g (19–21 oz) and can live up to 40 years. [6] [7] This subspecies differs from the Australian greater sulphur-crested cockatoo in that it is smaller, with broader crest feathers and has a pale blue periophthalmic ring instead of white.
The citron-crested cockatoo (Cacatua citrinocristata) is a medium-sized cockatoo with an orange crest, dark grey beak, pale orange ear patches, and strong feet and claws. The underside of the larger wing and tail feathers have a pale yellow color.
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In the 18th century, yellow-crested cockatoos were imported into Europe as pets and these birds were described by various naturalists. In 1738 English naturalist Eleazar Albin included a description and illustration of the "Cockatoo or White crested parrot" in his A Natural History of Birds based on a bird displayed at "The Tiger" tavern on Tower Hill in London. [7]