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Rhinoceros Hornbill Buceros rhinoceros
BirdLife is updating this factsheet for the 2016 Red List
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This species is largely restricled to extensive tracts of primary evergreen forest, and it is therefore likely to be declining moderately rapidly owing to habitat destruction. It remains widespread, but should be carefully monitored, and is currently considered Near Threatened.

Taxonomic source(s)
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

Distribution and population
Buceros rhinoceros is confined to the Sundaic lowlands of extreme south peninsular Thailand, Sabah, Sarawak and Peninsular Malaysia, Singapore (formerly), Kalimantan, Sumatra and Java, Indonesia and Brunei (BirdLife International 2001). It generally occurs at low densities, even in suitable habitat.

Population justification
The population size of this species has not been quantified.

Trend justification
A moderately rapid decline is suspected to be occurring, as a result of the widespread destruction and degradation of lowland forests throughout the species's range.

This species occurs in extensive areas of primary lowland and hill forest, extending into tall secondary forest and swamp forests, up to 1,400 m.

Forest destruction in the Sundaic lowlands of Indonesia has been extensive as a result of commercial and illegal logging, as well as agricultural development. In Borneo it is shot for food and hat feathers by local tribes. It returns to customary nest-holes, even after surrounding forest has been disturbed, and studies demonstrate that logging reduces overall numbers.

Conservation Actions Underway
CITES Appendix II. Conservation Actions Proposed
Monitor populations across the range to determine the magnitude of declines and rates of range contraction. Campaign for the protection of remaining extensive tracts of lowland forest in the Sundaic region.

BirdLife International. 2001. Threatened birds of Asia: the BirdLife International Red Data Book. BirdLife International, Cambridge, U.K.

Further web sources of information
Detailed species accounts from the Threatened birds of Asia: the BirdLife International Red Data Book (BirdLife International 2001).

Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Benstead, P., Gilroy, J., Taylor, J.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2016) Species factsheet: Buceros rhinoceros. Downloaded from on 25/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 25/10/2016.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Additional resources for this species

ARKive species - Rhinoceros hornbill (Buceros rhinoceros) 0

Key facts
Current IUCN Red List category Near Threatened
Family Bucerotidae (Hornbills)
Species name author Linnaeus, 1758
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 1,460,000 km2
Country endemic? No
Links to further information
- Additional Information on this species