Forest degradation and climate change affect their habitat since they prefer cool weather for settlement. The Gang cockatoo (Callocephalon fimbriatum) has an important role in dispersing and distributing seeds from various plants that they consume as their daily diet. Long-distance flight takes place at a great height which ends with twisting and turning while spiraling towards the ground. These bird species have slow wing beats and their flight is owl-like. These bird species are arboreal and are seen on the ground only when they want to drink water or pick fallen seeds or pine cones on the ground. They highly prefer nesting on tall, great trees with great height. Gang cockatoos are a distinctive and charismatic Australian bird, with feathers that have pinkish edges on the underbelly. There are different species of cockatoo with different colors, from white, yellow to bright red, and wispy crest. They typically move to higher altitudes during summer, and during winter, return to lower ranges. While they can adapt to new food sources such as pine nuts from introduced trees, they need old-growth forests with hollow trees for nesting.Gang cockatoos are a small and compact cockatoo, genus of Callocephalon, only found in southeastern Australia. These birds migrate seasonally they spend summers in high-altitude areas, moving to warmer lowland areas in winter. Several pairs may nest close together, and their young aggregate in ‘creches’ while their parents are out foraging. Breeding takes place between October and January females lay up to 3 eggs in tree-hollow nests, and both parents incubate and rear the young. Males and females pair for life and will often return to the same nesting tree each year. This late start limits the rate at which populations can build up, which is another conservation concern. Gang-gang Cockatoos begin breeding at four years of age. They are locally common within their distribution but are experiencing a worrying decline. Like other cockatoos, Gang-gangs are noisy, conspicuous, gregarious birds with curved beaks for crushing seeds. Females have reddish feathers on their undersides. Their mottled grey plumage contrasts with the shock of crimson feathers on the heads of male birds. Gang-gang Cockatoos are sturdy, medium-sized birds with short tails and broad wings. They inhabit cool, wet forests, particularly alpine bushland, but may visit urban parks and gardens to feed. Gang-gang Cockatoos are found in south-eastern Australia. weigh on average 257 g and are 32–37 cm with a wingspan 62–76 cm.are omnivores and they eat seeds of native and introduced trees and shrubs, berries, fruits, nuts and insects.probably look similar to early, primitive cockatoos.have a call that sound like a creaking gate, or a cork being pulled from a bottle.often return to the same nesting tree each year.In combination these factors present a serious threat to Gang-gang Cockatoos in the medium and long term. This species is also susceptible to psittacine circovirus disease which causes feather loss and beak abnormalities. Land clearing and the removal of old trees endangers Gang-gang Cockatoos because they lose their feeding habitat and breeding hollows.
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