Hornbills (Bucerotidae)

Helmeted Hornbill (Rhinoplax vigil) - HBW 6, p. 504

French: Calao à casque rond German: Schildschnabel Spanish: Cálao de Yelmo
Other common names: Great Helmeted Hornbill, Solid-billed Hornbill

Taxonomy: Buceros vigil J. R. Forster, 1781, Sumatra.
Often placed in genus Buceros, but differs clearly in morphology, and in unique hooting call ending in loud cackle. Monotypic.

Distribution: S Myanmar and S Thailand through Malay Peninsula to Sumatra and Borneo.