Hornbills (Bucerotidae)

Wrinkled Hornbill (Aceros corrugatus) - HBW 6, p. 512

French: Calao à casque rouge German: Runzelhornvogel Spanish: Cálao Arrugado
Other common names: Sunda Wrinkled Hornbill

Taxonomy: Buceros corrugatus Temminck, 1832, Borneo.
Sometimes placed in genus Rhyticeros. May form a superspecies with A. cassidix, A. leucocephalus and A. waldeni. Has in past sometimes been treated as conspecific with A. leucocephalus, but the two show clear morphological differences. Birds from Asian mainland S to Sumatra and nearby islands have sometimes been separated as race rugosus (or megistus), on basis of larger size. Monotypic.

Distribution: S Thailand, Peninsular Malaysia, Sumatra (including islands of Rupat and Payong), Batu Is and Borneo; recently ­recorded in SW Cambodia.