The Cacatua (Licmetis) group, including Cacatua tenuirostris and Cacatua pastinator, consists of cockatoos known for their distinctive white plumage and thin, elongated bills. These birds are native to Australia and inhabit open woodlands and forests. They are social and often seen in flocks, known for their loud calls and playful behavior. Their unique feeding habits involve using their beaks to dig for roots and tubers.

Cacatua (Licmetis) tenuirostris, commonly known as the Long-billed Corella, and Cacatua (Licmetis) pastinator, commonly known as the Western Corella, are native to Australia. The Long-billed Corella is primarily found in the southeastern parts of Australia, including Victoria and New South Wales. The Western Corella is found in the southwestern parts of Western Australia.

These cockatoos typically inhabit open woodlands, grasslands, and areas with scattered trees. They are often found near water sources such as rivers and dams. The climate in their native regions ranges from temperate in the southeast to Mediterranean in the southwest, with dry summers and mild, wet winters.

Both species play a role in seed dispersal and are known for their ability to adapt to modified environments, including farmlands and urban areas. They are often seen in flocks, particularly during feeding, and have a diet that includes seeds, bulbs, and roots, which they dig from the ground with their long bills.