A comparison of the first and second Atlas of Australian Birds (Barrett and Silcocks 2002) showed that between atlas periods (01), the overall reporting rate for Gang-gang Cockatoos declined by 44% across its NSW range. Data from the Atlas of Australian Birds clearly indicate that the Gang-gang Cockatoo has declined dramatically within NSW. Breeding usually occurs between October and January, and individuals are likely to breed from around four years of age (Chambers 1995).ĥ. Nests are most commonly recorded in eucalypt hollows in live trees close to water (Beruldsen 1980). Breeding usually occurs in tall mature sclerophyll forests that have a dense understorey, and occasionally in coastal forests. The Gang-gang Cockatoo requires hollows in the trunks or large limbs of large trees in which to breed (Gibbons 1999, Gibbons and Lindenmayer 2000). The species in general, and creches of young birds in particular, undertake nomadic as well as seasonal movements and may occur at apparently random points within the range described above.Ĥ. At this time the species may be observed in urban areas including parks and gardens (Morcombe 1986). In winter, the Gang-gang Cockatoo occurs at lower altitudes in drier, more open eucalypt forests and woodlands, particularly in box-ironbark assemblages, or in dry forest in coastal areas (Shields and Crome 1992). The species may also occur in sub-alpine Snow Gum Eucalyptus pauciflora woodland and occasionally in temperate rainforests (Forshaw 1989). In summer, the Gang-gang Cockatoo occupies tall montane forests and woodlands, particularly in heavily timbered and mature wet sclerophyll forests (Frith 1969). Isolated records are known from as far north as Coffs Harbour and as far west as Mudgee (Chambers 1995).ģ. It occurs regularly in the Australian Capital Territory. In NSW, the Gang-gang Cockatoo is distributed from the south-east coast to the Hunter region, and inland to the Central Tablelands and south-west slopes. A small introduced population occurs on the western tip of Kangaroo Island, South Australia (Higgins 1999). The species formerly occurred on King Island, Tasmania, but is now locally extinct. The Gang-gang Cockatoo is distributed from southern Victoria through south- and central-eastern New South Wales (NSW) (Shields and Crome 1992). The species is readily distinguished from other cockatoos of similar size: males are slate grey with a scarlet head and a wispy scarlet crest females have a grey head and crest, and the feathers on the underparts are edged with salmon pink (Simpson and Day 1996).Ģ. The Gang-gang Cockatoo ranges in length from 32 to 37 cm, with a wingspan of 62 to 76 cm (Higgins 1999). NSW Scientific Committee - final determinationġ. Listing of vulnerable species is provided for by Part 2 of the Act. The Scientific Committee, established by the Threatened Species Conservation Act, has made a Final Determination to list the Gang-gang Cockatoo Callocephalon fimbriatum (Grant 1803) as a VULNERABLE SPECIES in Schedule 2 of the Act. Gang-gang cockatoo (Callocephalon fimbriatum) - vulnerable species listing
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