Species of Thailand
Thai: นกเงือกปากย่น, nok ngeuak paak yon
Binomial name: Rhabdotorrhinus corrugatus, Coenraad Jacob Temminck, 1832
The wrinkled hornbill or Sunda wrinkled hornbill (Aceros corrugatus) is a medium-large hornbill which is found in forest in the Thai-Malay Peninsula, Sumatra and Borneo. It has sometimes been placed in the genus Rhyticeros together with most other species generally placed in Aceros.
The wrinkled hornbill is around 70 cm long, and has a very large bill that is fused to the skull. It has mainly black plumage, a blue eye-ring, and a broadly white or rufous-tipped tail. The male and female have different head and bill patterns. 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 bill of the male is yellow with a red base and casque, and a brownish basal half of the lower mandible. The bill and casque of the female is almost entirely yellow.
This is a forest species and eats mainly fruit, such as figs, although it will also eat small animals such as frogs and insects. Wrinkled hornbills do not drink, but get the water they need from their food. Their call is a harsh "Kak-kak, " or a deep "Row-wow" which can be heard for miles.
These birds are monogamous and remain in a pair for life. They use holes found in trees for nests, and the female will plaster over the entrance with mud and droppings, leaving a nesting mother and her chicks only a small hole, too small for them to exit. They are fed exclusively by the male, who regurgitates food for them. After several months, when the chicks are ready, the female will break out of her nest.
Wrinkled hornbills were first bred in captivity in 1988.
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- Rhabdotorrhinus corrugatus
- Thai: นกเงือกปากย่น, nok ngeuak paak yon
- Aceros corrugatus, Coenraad Jacob Temminck (1832)
- Rhyticeros corrugatus, Coenraad Jacob Temminck (1832)
- Buceros corrugatus, Coenraad Jacob Temminck (1832)
- Rhabdotorrhinus corrugatus, Coenraad Jacob Temminck (1832)
Near Threatened (IUCN3.1)
- Bang Lang National Park
- Hala-Bala Wildlife Sanctuary
- Khao Sok National Park
Range map of Rhabdotorrhinus corrugatus in Thailand
Important note; our range maps are based on limited data we have collected. The data is not necessarily accurate or complete.
Special thanks to Ton Smits, Parinya Pawangkhanant, Ian Dugdale and many others for their contribution for range data.
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