Editing Cockatoo (section)

==Distribution and habitat==
[[File:Cacatua goffiniana -eating rambutan-6.jpg|thumb|The [[Tanimbar corella]] is restricted to the islands of Tanimbar in Indonesia; a few feral escapees are found in [[Singapore]].|alt=A mainly white cockatoo with a few pale-pink feathers on its face. The cockatoo is perched on a branch in a tree standing on its right foot while holding what appears to be a rambutan fruit up to its open beak with its left foot]]
Cockatoos have a much more restricted range than the true parrots, occurring naturally only in [[Australia]], [[Indonesia]], the [[Philippines]], and some Pacific regions.<ref name = "HBW">{{Cite book | first = Ian | last = Rowley | editor = del Hoyo, Josep | editor2 = Elliott, Andrew | editor3 = Sargatal, Jordi | contribution = Family Cacatuidae (Cockatoos) | title = Handbook of the Birds of the World. Volume 4, Sandgrouse to Cuckoos | year = 1997 | pages = [https://archive.org/details/handbookofbirdso0001unse/page/246 246–69] | place = Barcelona | publisher = Lynx Edicions | isbn = 978-84-87334-22-1 | title-link = Handbook of the Birds of the World }}</ref> Eleven of the 21 species exist in the wild only in Australia, while seven species occur only in the islands of the [[Philippines]], Indonesia, [[Papua New Guinea]] and the [[Solomon Islands]]. No cockatoo species are found in [[Borneo]], despite their presence on nearby [[Palawan]] and [[Sulawesi]] or many Pacific islands,<ref>{{Harvnb|Cameron|2007|p=86}}.</ref> although fossil remains have been recorded from [[New Caledonia]].<ref name=Steadman06>{{Cite book| last = Steadman | first = D | author-link = David Steadman | title = Extinction and Biogeography of Tropical Pacific Birds | publisher = University of Chicago Press | year = 2006 | location = Chicago | page = 348| isbn = 978-0-226-77142-7 }}</ref>

Three species occur in both New Guinea and Australia.<ref>{{Harvnb|Cameron|2007|p=3}}.</ref> Some species have widespread distributions, with the galah, for example, occurring over most of Australia, whereas other species have tiny distributions, confined to a small part of the continent, such as the [[Baudin's black cockatoo]] of Western Australia or to a small island group, such as the [[Tanimbar corella]], which is restricted to the [[Tanimbar Islands]] of Indonesia. Some cockatoos have been introduced accidentally to areas outside their natural range such as New Zealand, Singapore, and [[Palau]],<ref>{{cite web |url=http://www.parks.tas.gov.au/?base=19344 |title=Sulphur-crested Cockatoo, ''Cacatua galerita'' |date=31 October 2011 |publisher=Parks & Wildlife Service Tasmania |access-date=24 October 2015 |archive-date=26 March 2017 |archive-url=https://web.archive.org/web/20170326112218/http://www.parks.tas.gov.au/?base=19344 |url-status=live }}</ref> while two Australian corella species have been introduced to parts of the continent where they are not native.

Cockatoos occupy a wide range of habitats from forests in subalpine regions to mangroves. However, no species is found in all types of habitat.<ref>{{Harvnb|Cameron|2007|p=71}}.</ref> The most widespread species,<ref name = "HBW"/> such as the galah and cockatiel,<ref name=Cam10304/> are open-country specialists that feed on grass seeds.<ref name = "HBW"/> They are often highly mobile fast flyers and are nomadic. Flocks of birds move across large areas of the inland, locating and feeding on seed and other food sources. Drought may force flocks from more arid areas to move further into farming areas.<ref name=Cam10304>{{Harvnb|Cameron|2007|pp=103–4}}.</ref> Other cockatoo species, such as the glossy black cockatoo, inhabit woodlands, rainforests, shrublands and even alpine forests. The [[red-vented cockatoo]] inhabits mangroves and its absence from northern [[Luzon]] may be related to the lack of mangrove forests there.<ref>{{Harvnb|Cameron|2007|p=77}}.</ref> Forest-dwelling cockatoos are generally sedentary, as the food supply is more stable and predictable.<ref name=Cam104>{{Harvnb|Cameron|2007|p=104}}.</ref> Several species have adapted well to human modified habitats and are found in agricultural areas and even busy cities.<ref name = "Temby">{{Cite conference| first=Ian| last=Temby| title=Urban wildlife issues in Australia| book-title=Proceedings of the 4th International Symposium on Urban Wildlife Conservation| editor=Shaw Williams| editor2=Lisa Harris| editor3=Larry Vandruff| publisher=University of Arizona| place=Tucson, Arizona| year=1999| url=http://cals.arizona.edu/pubs/adjunct/snr0704/snr07041d.pdf| access-date=11 December 2009| conference=| archive-date=27 September 2011| archive-url=https://web.archive.org/web/20110927063500/http://cals.arizona.edu/pubs/adjunct/snr0704/snr07041d.pdf| url-status=live}}</ref>