Brunei Darussalam (B), Indonesia (B), Malaysia (B), Myanmar (B), Thailand (B).
Southern Myanmar and southern Thailand, Peninsular Malaysia, Sumatra and Borneo; recently recorded in south-western Cambodia.
 
Population
Estimated population is unknown (2010) and decreasing.
Status EN
Habitat destruction due to illegal logging and conversion to agriculture, forest fires are the main threats.
For more information see BirdLife International Species Factsheet.
White-crowned Hornbill (Berenicornis comatus) [XC21023]
by Martjan Lammertink from Cabang Panti, Gunung Palung National Park, West Kalimantan, Borneo, Indonesia (song)
White-crowned Hornbill (Berenicornis comatus) [XC19131]
by Yong Ding Li from Danum Valley, Sabah, Borneo, Malaysia (call, song)
Subspecies
Thought by some to be closely related to Western Long-tailed Hornbill (Horizocerus albocristatus), which is sometimes included in present genus, but plumage and voice markedly distinct within context of family.