Genus Anorrhinus

Assam Hornbill - The Austen's Brown Hornbill is a species of hornbill found in forests from north-eastern India and southern China and south to Vietnam and northern Thailand. It is often included as a subspecies of Tickell's Brown Hornbill.

Bushy-crested Hornbill - Illustration from Daniel Giraud Elliot

Brown Hornbill - The Tickell's Brown Hornbill , also known as the Rusty-cheeked Hornbill, is a species of hornbill found in forests in southern Burma and adjacent western Thailand. It often includes the Austen's Brown Hornbill as a subspecies.