Greater sulphur-crested cockatoo

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Greater sulphur-crested cockatoo
Cacatua galerita galerita - Bloedel Floral Conservatory, Queen Elizabeth Park - Vancouver, Canada - DSC07540.JPG
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Psittaciformes
Family: Cacatuidae
Genus: Cacatua
Species:
Subspecies:
C. g. galerita
Trinomial name
Cacatua galerita galerita
Latham, 1790

The greater sulphur-crested cockatoo (Cacatua galerita galerita) is the nominate subspecies of the sulphur-crested cockatoo. Its length is up to 50 cm (20 in) and weighs 0.91 kg (2 lb), [1] making it one of the largest cockatoo species.

Contents

Description

The greater sulphur-crested cockatoo is the largest of four sulphur-crested cockatoo subspecies, being significantly heavier than the closely related Eleonora and Triton cockatoos. [2] Its head is white, with a long yellow crest on top of its head. Its body is almost entirely white as well, with a yellow tint on the terminal ends of their head and neck feathers, and on the underside of their wing and tail feathers. [2] They have a downward-curved black beak, which often appears grey from the white powder they produce for grooming.The sexes are nearly identical, with the only difference being the females' irises, which have a deeper brown-red colour, compared to the males' strictly brown eyes. [3]

Taxonomy

The greater sulphur-crested cockatoo is also known by alternate names such as the yellow-crested cockatoo, white cockatoo, and cocky. [2]  It is of the family Cacatuidae and the order Psittaciformes, which include old world parrots, African and new world parrots, New Zealand parrots, and cockatoos. The genus name Cacatua is of Malay origin, meaning 'old father,' likely due to their long lifespan and tendency to stay with the same flock for life. [3] 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 genetic diversity within one species may differ so much among populations that there is still debate on the degree of subspeciation. Since all cockatoos originated in Australasia, it is hypothesised that they emerged after Gondwana's separation 55 million years ago during the Eocene. The vast diversification of cockatoo species likely occurred during the Miocene when the birds were dispersing along Australasia and as the Australian land mass was changing from a wet to arid environment. [5]

Habitat and distribution

The greater sulphur-crested cockatoo is native to eastern Australia from Cape York to Tasmania, and has been introduced to places like Indonesia, the Palau Islands, and New Zealand where it is considered a well established species. [6] They avoid dry arid areas and instead can be found in temperate rainforests, wooded areas and woodlands, and shrublands. Their habitat range spans between 1,000,000 km² and 10,000,000 km², and they are abundant across this range. [7]

Greater sulphur-crested cockatoo painted by Edward Lear GreaterLear.jpg
Greater sulphur-crested cockatoo painted by Edward Lear

History

The bird was first collected by explorer Captain James Cook in 1770 on a voyage to Australia. [8]

Behaviour

Their lifespan averages around 80 years. They are fairly social birds, living in flocks that can have hundreds of individuals. They engage in mutual preening, and are non-migratory birds. Each flock lives in their respective range and do not move areas or interact with other flocks nearby. During midday, they rest in trees, pruning and picking bark from branches. They feed in the late afternoon until the evening, where they return to their tree to sleep.

As of 2018, the greater sulphur-crested cockatoo is listed as least concern on the IUCN red list, likely due to their large flock sizes and long lifespan. [3]

Diet

Greater sulphur-crested cockatoos feed on flowers, seeds, grasses, fruits, and roots. They occasionally eat insect larvae. Since the early 1900s they have been documented stealing crops and seeds from Australian farmers. A few individuals will scout farms that have freshly sown seeds or plants that have just begun to sprout. They return a few days later with the entire flock to feed. [7]

Reproduction

To breed, females nest in dead trees or tree hollows, laying one to four eggs per season. [7] The males and females take turns incubating the eggs until they hatch at around 28 days. Chicks are born with their eyes still closed with pale yellow feathers, and remain in the nest until 11 weeks old. [2] All chicks are born with brown eyes, which change colour at maturity based on sex. Very rarely will a flock leave their roosting site, so many populations have often been in the same area for generations. [7]

Vocalisation

Like all cockatoos, the greater sulphur-crested cockatoo is a very vocal bird. Their typical call is a loud shriek, and when frightened, they emit a hissing sound. [3]

Aviculture

Greater sulphur-crested cockatoos are rarely seen in aviculture outside of Australia. In Australia, captive birds are typically individuals that were taken from the wild as abandoned or injured chicks or fledglings and raised by humans [7] .They make a popular pet due to their high intelligence, ability to be easily tamed, ability to learn vocalisations, and long lifespan.

One particular greater sulphur-crested cockatoo, nicknamed "Cocky", was a popular domesticated bird at the London Zoological gardens. He rose to fame in the late 1800s for being the oldest living bird, dying at 120 years old. [3]

Related Research Articles

<span class="mw-page-title-main">Cockatoo</span> Any bird in the family Cacatuidae

A cockatoo is any of the 21 species of parrots belonging to the family Cacatuidae, the only family in the superfamily Cacatuoidea. Along with the Psittacoidea and the Strigopoidea, they make up the order Psittaciformes. 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.

<span class="mw-page-title-main">Cockatiel</span> Species of bird

The cockatiel, also known as the weero/weiro or quarrion, is a medium-sized parrot that is a member of its own branch of the cockatoo family endemic to Australia. They are prized as household exotic bird pets and companion parrots throughout the world and are relatively easy to breed compared to other parrots. As a caged bird, cockatiels are second in popularity only to the budgerigar.

<span class="mw-page-title-main">Yellow-tailed black cockatoo</span> Species of bird native to the south-east of Australia

The yellow-tailed black cockatoo is a large cockatoo native to the south-east of Australia measuring 55–65 cm (22–26 in) in length. It has a short crest on the top of its head. Its plumage is mostly brownish black and it has prominent yellow cheek patches and a yellow tail band. The body feathers are edged with yellow giving a scalloped appearance. The adult male has a black beak and pinkish-red eye-rings, and the female has a bone-coloured beak and grey eye-rings. In flight, yellow-tailed black cockatoos flap deeply and slowly, with a peculiar heavy fluid motion. Their loud, wailing calls carry for long distances. The yellow-tailed black cockatoo is found in temperate forests and forested areas across south and central eastern Queensland to southeastern South Australia, including a very small population persisting in the Eyre Peninsula. Two subspecies are recognised, although Tasmanian and southern mainland populations of the southern subspecies xanthanotus may be distinct enough from each other to bring the total to three. Birds of subspecies funereus have longer wings and tails and darker plumage overall, while those of xanthanotus have more prominent scalloping. The subspecies whiteae is found south of Victoria to the East of South Australia and is smaller in size.

<span class="mw-page-title-main">Palm cockatoo</span> Species of bird from the South Pacific

The palm cockatoo, also known as the goliath cockatoo or great black cockatoo, is a large, smoky-grey/black parrot of the cockatoo family native to New Guinea, the Aru Islands and the Cape York Peninsula in Queensland, Australia. It has a crest of long feathers atop its head, with a very large and strong, sharply-hooked black beak, and prominent bright-red cheek patches.

<span class="mw-page-title-main">Salmon-crested cockatoo</span> Species of bird

The salmon-crested cockatoo, also known as the Moluccan cockatoo, is a cockatoo endemic to the Seram archipelago in eastern Indonesia. At a height of up to 46–52 centimetres (1.51–1.71 ft) and weight of up to 850 grams (1.87 lb), it is among the largest of the white cockatoos. The female is slightly smaller than the male on average. It has white-pink feathers with a definite peachy glow, a slight yellow on the underwing and underside of the tail feathers and a large retractable recumbent crest which it raises when threatened, revealing hitherto concealed bright red-orange plumes to frighten potential attackers. It may also be raised in excitement or in other 'emotional' displays. Some describe the crest as "flamingo-colored". It also has one of the louder calls in the parrot world and in captivity is a capable mimic.

<span class="mw-page-title-main">Galah</span> Type of cockatoo

The galah, less commonly known as the pink and grey cockatoo or rose-breasted cockatoo, is an Australian species of cockatoo and the only member of the genus Eolophus. The galah is adapted to a wide variety of modified and unmodified habitats and is one of Australia's most abundant and widespread bird species. The species is endemic to mainland Australia. It was introduced to Tasmania, where it is now widespread, in the mid-19th century and much more recently to New Zealand.

<span class="mw-page-title-main">White cockatoo</span> Species of bird

The white cockatoo, also known as the umbrella cockatoo, is a medium-sized all-white cockatoo endemic to tropical rainforest on islands of Indonesia. When surprised, it extends a large and striking head crest, which has a semicircular shape. The wings and tail have a pale yellow or lemon color which is exposed when they fly. It is similar to other species of white cockatoo such as yellow-crested cockatoo, sulphur-crested cockatoo, and salmon-crested cockatoo, all of which have yellow, orange or pink crest feathers instead of white.

<span class="mw-page-title-main">Sulphur-crested cockatoo</span> Species of bird

The sulphur-crested cockatoo is a relatively large white cockatoo found in wooded habitats in Australia, New Guinea, and some of the islands of Indonesia. They can be locally very numerous, leading to them sometimes being considered pests. A highly intelligent bird, they are well known in aviculture, although they can be demanding pets.

<span class="mw-page-title-main">Solomons corella</span> Species of bird

The Solomons corella, also known as Solomons cockatoo, Ducorps's cockatoo or broad-crested corella, is a species of cockatoo endemic to the Solomon Islands archipelago. This small white cockatoo is larger than the Tanimbar corella yet smaller than the umbrella cockatoo. The species is common across most of the Solomons, absent only from Makira in the south. It inhabits lowland rainforests, secondary forests, cleared areas and gardens.

<span class="mw-page-title-main">Yellow-crested cockatoo</span> Species of bird

The yellow-crested cockatoo also known as the lesser sulphur-crested cockatoo, is a medium-sized cockatoo with white plumage, bluish-white bare orbital skin, grey feet, a black bill, and a retractile yellow or orange crest. The sexes are similar.

<span class="mw-page-title-main">Little corella</span> Species of bird

The little corella, also known as the short-billed corella, bare-eyed cockatoo, blood-stained cockatoo, and little cockatoo is a white cockatoo native to Australia and southern New Guinea. It was known as Birdirra among the Yindjibarndi people of the central and western Pilbara. They would keep them as pets, or traditionally cook and eat them. The downy feathers are used in traditional ceremonies and dances where they adorn head and armbands.

<span class="mw-page-title-main">Red-tailed black cockatoo</span> Large black cockatoo native to Australia

The red-tailed black cockatoo also known as Banksian- or Banks' black cockatoo, is a large black cockatoo native to Australia. Adult males have a characteristic pair of bright red panels on the tail that gives the species its name. It is more common in the drier parts of the continent. Five subspecies are recognised, differing chiefly in beak size. Although the more northerly subspecies are widespread, the two southern subspecies, the forest red-tailed black cockatoo and the south-eastern red-tailed black cockatoo are under threat.

<span class="mw-page-title-main">Crest (feathers)</span> Avian plumage

The crest is a prominent feature exhibited by several bird species on their heads. It is distinct from features such as casques and cockscombs - sometimes erroneously referred to as "crests", which are bony and fleshy structures respectively.

<span class="mw-page-title-main">Western corella</span> Species of bird

The western corella also known as the western long-billed corella, is a species of white cockatoo endemic to south-western Australia.

<span class="mw-page-title-main">Feral parrot</span> Parrot in non-native environment

A feral parrot is a parrot that has adapted to life in an ecosystem to which it is not native. The birds are often descended from pets that have escaped or been deliberately released. Many species of parrots are highly social, and like to gather in large flocks. Not all feral parrots are able to adapt to life outside of captivity, although having a pre-existing nearby parrot colony can assist with the adaptation process.

<span class="mw-page-title-main">Eleonora cockatoo</span> Subspecies of bird

The Eleonora cockatoo, Cacatua galerita eleonora, also known as medium sulphur-crested cockatoo, is a subspecies of the sulphur-crested cockatoo. It is native to the Aru Islands in the province of Maluku in eastern Indonesia, but has also been introduced to Kai Islands. Avicultural populations are well-established in Europe and the United States.

<i>Cacatua</i> (subgenus) Subgenus of birds

Cacatua is a subgenus of the white cockatoos. They are found in wooded habitats from Wallacea east to the Bismarck Archipelago and south to Australia. With the exception of the yellow-crested cockatoo, all are relatively large cockatoos with a total length of 45–55 cm (18–22 in). Their plumage is mainly white, and the underwing and -tail have a yellowish tinge. Their crest is expressive and brightly coloured in most species. Unlike the members of the subgenus Licmetis, the members of the subgenus Cacatua have a black bill.

<span class="mw-page-title-main">Triton cockatoo</span> Subspecies of bird

The Triton cockatoo is one of the four subspecies of the sulphur-crested cockatoo. The cockatoo was first described by Dutch zoologist, Coenraad Jacob Temminck, in 1849. There is no documentation as to why Temminck selected this name however it is suggested that it was named after the Dutch corvette, Triton, which operated off the Dutch New Guinea coastline, in 19th century.

<span class="mw-page-title-main">Mathews' cockatoo</span> Subspecies of bird

The Mathews' cockatoo or northern sulphur-crested cockatoo is a subspecies of the sulphur-crested cockatoo. Its scientific name relates to the area in which it was first found, the Fitzroy River and its common name comes from Gregory Mathews, the Australian ornithologist who first identified it as a subspecies in 1912.

References

  1. "The Spruce" . Retrieved 10 November 2017.
  2. 1 2 3 4 "Sulphur-crested Cockatoo Fact Sheet". Northern Parrots. 12 February 2013. Retrieved 3 January 2023.
  3. 1 2 3 4 5 Vriends, Matthew M. (1997). "Five Indonesian Cockatoos Their Biology and Captive Management". AFA Watchbird. 24 (2): 28–33.
  4. 1 2 Mulawka, Edward John (14 August 2014). The Cockatoos: A Complete Guide to the 21 Species. McFarland. ISBN   978-0-7864-7925-2.
  5. White, Nicole E.; Phillips, Matthew J.; Gilbert, M. Thomas P.; Alfaro-Núñez, Alonzo; Willerslev, Eske; Mawson, Peter R.; Spencer, Peter B. S.; Bunce, Michael (1 June 2011). "The evolutionary history of cockatoos (Aves: Psittaciformes: Cacatuidae)". Molecular Phylogenetics and Evolution. 59 (3): 615–622. doi:10.1016/j.ympev.2011.03.011. ISSN   1055-7903.
  6. Simon (4 August 2023). "Greater Sulphur-crested Cockatoo". Animal World. Retrieved 3 October 2024.
  7. 1 2 3 4 5 Hay, Rod (2008). "Sulphur-crested cockatoo (Cacatua galerita), exports from New Zealand, case study". New Zealand CITES Scientific Authority.
  8. "Animal-World". Animal World. Retrieved 10 November 2017.


https://www.wildlife.vic.gov.au/__data/assets/pdf_file/0025/91393/Sulphur-crested-Cockatoo.pdf

https://seaworld.org/animals/facts/birds/greater-sulphur-crested-cockatoo/