The Wrinkled Hornbill (Rhabdotorrhinus corrugatus) gets its name from the distinctive wrinkled or ridged casque. Also known as the Sunda wrinkled hornbill, it inhabits lowland forests in Southeast Asia, specifically the Malay Peninsula, Sumatra, Borneo, and parts of Thailand, with some sightings in Cambodia. Males have bright yellow feathers on the auriculars, cheeks, throat, neck-sides and chest, but these areas are black in the female, except for the blue throat. The male bill is yellow with a red base and casque, and a brownish basal half of the lower mandible, whereas the female's bill and casque are almost entirely yellow. Wrinkled hornbills do not drink, but get the water they need from their food.
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