The Writhed Hornbill also known as the Mindanao Wrinkled Hornbill, is a species of hornbill

Hornbill

Hornbills are a family of bird found in tropical and subtropical Africa, Asia and Melanesia. They are characterized by a long, down-curved bill which is frequently brightly-colored and sometimes has a casque on the upper mandible. Both the common English and the scientific name of the family...

 in the Bucerotidae family.
It is endemic to humid forest

Forest

A forest, also referred to as a wood or the woods, is an area with a high density of trees. As with cities, depending where you are in the world, what is considered a forest may vary significantly in size and have various classification according to how and what of the forest is composed...

s on the Philippine islands of Mindanao

Mindanao

Mindanao is the second largest and easternmost island in the Philippines. It is also the name of one of the three island groups in the country, which consists of the island of Mindanao and smaller surrounding islands. The other two are Luzon and the Visayas. The island of Mindanao is called The...

, Dinagat and Camiguin Sur. It formerly included the Rufous-headed Hornbill as a subspecies

Subspecies

Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

, but unlike that species, both sexes of the Mindanao Wrinkled Hornbill have orange-red throat and peri-ocular skin.

The Mindanao Wrinkled Hornbill is threatened by habitat loss and hunting.