This species is largely restricted to extensive tracts of primary evergreen forest within a region experiencing high rates of deforestation. Buceros rhinoceros is confined to Thailand, Sabah, Sarawak and Peninsular Malaysia, Kalimantan, Sumatra and Java, Indonesia and Brunei (BirdLife International 2001). It is locally extinct in Singapore.
Rhinoceros Hornbill Buceros rhinoceros (VU)