Yellow-tailed Black Cockatoo - Ecology and Behaviour

Ecology and Behaviour

Yellow-tailed Black Cockatoos are diurnal, raucous and noisy, and are often heard before being seen. They make long journeys by flying at a considerable height while calling to each other, and they are often seen flying high overhead in pairs, or trios comprising a pair and their young, or small groups. Outside of the breeding season in autumn or winter they may coalesce into flocks of a hundred birds or more, while family interactions between pairs or trios are maintained. They are generally wary birds, although they can be less shy in urban and suburban areas. They generally keep to trees, only coming to ground level to inspect fallen pine or banksia cones or to drink. Flight is fluid and has been described as "lazy", with deep, slow wingbeats.

Tall eucalypts that are emergent over other trees in wooded areas are selected for roosting sites. It is here that the cockatoos rest for the night, and also rest to shelter from the heat of the day. They often socialise before dusk, engaging in preening, feeding young, and flying acrobatically. Flocks will return to roost earlier in bad weather.

The usual call is an eerie high-pitched wailing contact call, "kee-ow ... kee-ow ... kee-ow", made while flying or roosting, and can be heard from afar. Birds may also make a harsh screeching alarm call. They also make a soft, chuckling call when searching for cossid moth larvae. Adults are normally quiet when feeding, while juveniles make frequent noisy begging calls. The Superb Lyrebird can mimic the adult Yellow-tailed Black Cockatoo's contact call with some success.