Little Corellas (Cacatua sanguinea) are a very common cockatoo and are widely distributed throughout Australia. They form large, noisy flocks and are often found feeding in large groups on the ground. Little Corellas were not found on the coastal plain near Perth until the 1970s. They are now a very common urban bird and are often considered to be a nuisance. Little Corellas are intelligent and playful, often hanging upside down, swinging on twigs, hanging on with their bills, and sliding down metal roofs. These Corellas are part of a large flock that lives on the southern end of Herdsman Lake, a large wetland near Perth In Western Australia. The cockatoos came singly or in pairs to perch on dead branches near the lake surface to drink and call before flying off.