{{Taxobox | name = Gang-gang Cockatoo
| status = VU
| image = Gang-gang female MJC01.jpg
| caption =
| regnum = Animalia
| phylum = Chordata
| classis = Aves
| ordo = Psittaciformes
| familia = Cacatuidae
| subfamilia = Calyptorhynchinae
| genus = '''''Callocephalon'''''
| genus_authority = Lesson, 1837
| species = '''''C. fimbriatum '''''
| binomial = ''Callocephalon fimbriatum''
| binomial_authority = (Grant, J., 1803)
| range_map = Bird range gang-gang cockatoo.png
| range_map_caption = Gang-gang Cockatoo range (in red)
}}

The '''Gang-gang Cockatoo''', ''Callocephalon fimbriatum,'' is found in the cooler and wetter forests and woodlands of alpine crest, while the female has a small fluffy grey crest. It ranges throughout south-eastern Australia and Tasmania. The Gang-gang Cockatoo is the faunal emblem of the Australian Capital Territory. It is easily identified by its distinctive call, which is described as resembling a creaky gate, or the sound of a cork being pulled from a wine bottle. 

The name ''Gang-gang'' comes from a Aboriginal language, either Ngunnawal or Wiradjuri. It is possible both language groups called it that.

Unlike most other cockatoos, Gang-gangs nest in young, solid trees, the females using their strong bills/beaks to excavate nesting cavities. Lots of older, hollow trees and loss of feeding habitat across south-eastern Australia through land clearing has led to a significant reduction in the numbers of this cockatoo in recent years. As a result, the Gang-Gang is now listed as vulnerable.

This particular species was most often allied with the white cockatoos of the genus ''Cacatua''. This has always been controversial due to the unusual appearance and coloration of the bird, especially its sexual dichromatism. New research has finally resolved the matter, with the Gang-gang Cockatoo being recognized as a distinctive early offshoot of the calyptorhynchine (dark) cockatoos (Brown & Toft, 1999). Considering the robust phylogeny of the cockatoos now established, a comparison of characters gained and lost during the evolution of cockatoos suggests that the Gang-gang Cockatoo - while of course much changed and adapted during the maybe 20 million years since its last common ancestor with any other living species lived - is probably still very similar in overall appearance to how the earliest cockatoos would have looked, and certainly the most primitive-looking of the species alive today.

==References==
*  Database entry includes justification for why this species is of least concern

* '''Brown''', D.M. & '''Toft''', C.A. (1999): Molecular systematics and biogeography of the cockatoos (Psittaciformes: Cacatuidae). ''Auk'' '''116'''(1): 141-157.

Le '''Cacatoès à tête rouge''' (''Callocephalon fimbriatum'') (en anglais: The '''Gang-gang Cockatoo''') est un cacatoès australien. Cet animal est l'emblème du Territoire de la capitale australienne.

==Description==

Ils pèsent en moyenne 250 grammes pour 34 centimètres de long. Le plumage est gris avec des rayures blanches. Le mâle a une tête avec une crête rouge tandis que la femelle est entièrement grise avec une petite houppe grise.Il a un cri facilement reconnaissable rappelant une porte qui grince où le bruit d'une bouteille de vin qu'on ouvre.

==Distribution et habitat==

Ils habitent dans les bois des régions froides et humides des Alpes australiennes dans le sud-est de l'Australie où il peut vivre dans la neige se nourrissant de fruits d'eucalyptus. Ils oint été importés à Kangaroo Island.

==Mode de vie==

Ils vivent en bandes d'uns cinquantaine d'individus sauf pendant la période de reproduction où ils vivent en couple.
Ils vivent dans les arbres et ne descendent sur le sol que pour boire ou ramasser des fruits au sol.