Wrinkled Hornbill

Rhabdotorrhinus corrugatus

Endangered. Borneo, Sumatra, and Malay Peninsula, all under pressure from palm oil. Its ridged casque is a fingerprint.

Population: Unknown (uncommon throughout range); suspected to decline 50–79% over three generations (57 years) due to forest loss — 62% forest-cover loss across range 2000–2012 (BirdLife International 2018 assessment)
Habitat: Primary evergreen lowland and swamp forest up to 1,000 m elevation; generally avoids secondary or degraded forest
Fun fact: During nesting the female seals herself inside a tree-cavity nest with mud and droppings, leaving only a narrow slit through which the male exclusively feeds her and the chicks by regurgitation; she breaks out of the seal only after several months once the chicks are older.
Range: Sundaic lowlands of the Thai-Malay Peninsula (southern Thailand, Peninsular Malaysia, Brunei), Sumatra and its Batu Islands, and Borneo (including Kalimantan); extent of occurrence ~2,980,000 km2; formerly present but now extirpated from Singapore
Diet: Primarily frugivorous, especially figs; occasionally eats small animals such as frogs and insects; obtains most water from food rather than drinking
Size: 0.7 m

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