Casque very large and high, sharp-edged and projecting in front, broader and carried back above the crown behind, the upper border curved and parallel with the commissure. Orbital skin and that on the sides of the throat nude; chin and middle of throat feathered. Tail long and wedge-shaped at the end; wings rounded and short. Plumage of the two sexes similar, but casque differently coloured.
A genus of five or six species, ranging throughout the greater part of the Oriental region. Two species are Indian. Both have the same habits. They are usually found in parties (families) of five or six, and keep to high trees either in forest or in groves in well-wooded country, especially near rivers ; they live chiefly on fruit and berries; and are very noisy, making a cackling sound in chorus. Their flight, unlike that of the larger Hornbills generally is comparatively silent but weak and undulating, and consists of alternate flapping and sailing. The breeding-habits are the same as those of other Hornbills.
Key to the Species.
Outer tail-feathers entirely white……………….A. coronatus, p. 144.
Outer tail-feathers only white at the ends……………….A. albirostris, p. 145.