Helmeted Hornbill Rhinoplax vigil


Beastall, C.; Shepherd, C. R.; Hadiprakarsa, Y.; Martyr, D. 2016. Trade in the Helmeted Hornbill Rhinoplax vigil: the 'ivory hornbill'. Bird Conservation International 26: 137-146.

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

Chong, M.H.N. 2011. Observations on the breeding biology of Helmeted Hornbill in Pahang, peninsular Malaysia. The Raffles Bulletin of Zoology 24: 163-165.

Collar, N.J. 2015. Helmeted Hornbills Rhinoplax vigil and the ivory trade: the crisis that came out of nowhere. BirdingASIA 24: 12-17.

EIA. 2015. Sin City – Illegal wildlife trade in Laos’ Golden Triangle Special Economic Zone. Environmental Investigation Agency, London, U.K.

Hii, R. 2015. Helmeted Hornbills on the Verge of Extinction. Huffington Post. Available at: (Accessed: 29/09/2015).

Hughes, A. 2015. Not just rhinos: Hornbill horns fetch stunning prices in illegal wildlife trade. Alliance of Leading Environmental Researchers and Thinkers. Available at: (Accessed: 29/09/2015).

IUCN. 2018. The IUCN Red List of Threatened Species. Version 2018-2. Available at: (Accessed: 15 November 2018).

IUCN. 2019. The IUCN Red List of Threatened Species. Version 2019-3. Available at: (Accessed: 10 December 2019).

Jain A., Lee J. G. H., Chao N., Lees C., Orenstein R., Strange B. C., Chng S. C. L., Marthy W., Yeap C. A., Hadiprakarsa Y. Y. and Rao M. (Eds). 2018. Helmeted Hornbill (Rhinoplax vigil): Status Review, Range-wide Conservation Strategy and Action Plan (2018-2027). IUCN Species Survival Commission Hornbill Specialist Group.

Kemp, A.C., Sharpe, C.J. and Boesman, P. 2014. Helmeted Hornbill (Rhinoplax vigil). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. and de Juana, E. (eds), Handbook of the Birds of the World Alive, Lynx Edicions, Barcelona.

Kinnaird, M. F.; O'Brien, T. G. 2007. The ecology and conservation of Asian Hornbills: farmers of the forest. University of Chicago Press, Chicago, IL, USA.

Kitamura, S.; Thong-Aree, S.; Madsri S.; Poonswad, P. 2011. Characteristics of hornbill-dispersed fruits in lowland dipterocarp forests of southern Thailand. The Raffles Bulletin of Zoology: 137-147.

Lum, S.; Poonswad, P. 2005. The Ecology of Hornbills: Reproduction and Populations. Pimdee Karnpim Co., Ltd., Bangkok.

Meijaard, E., Sheil, D., Nasi, R., Augeri, D., Rosenbaum, B., Iskandar, D., Setyawati, T., Lammertink, M., Rachmatika, I., Wong, A., Soehartono, T., Stanley, S. and O'Brien, T. 2005. Life after logging - Reconciling wildlife conservation and production forestry in Indonesian Borneo. CIFOR and UNESCO, Jakarta.

Poonswad, P., Kemp, A.C. and Strange, M. 2013. Hornbills of the World: A Photographic Guide. Draco Publishing and Hornbill Research Foundation.

Tracewski, L.; Butchart, S. H. M.; Di Marco, M.; Ficetola, G. F.; Rondinini, C.; Symes, A.; Wheatley, H.; Beresford, A. E.; Buchanan, G. M. 2016. Toward quantification of the impact of 21st-century deforestation on the extinction risk of terrestrial vertebrates. Conservation Biology 30(5): 1070-1079.

Utoyo, L.; Marthy, W.; Noske, R. A.; Surahmat, F. 2017. Nesting cycle and nest tree characteristics of the Helmeted Hornbill Rhinoplax vigil, compared to the Wreathed Hornbill Rhyticeros undulatus, in Sumatran lowland rainforest. Kukila 20: 12-22.

Further resources

IUCN SSC Hornbill Specialist Group

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

Media resources

Recommended citation
BirdLife International (2020) Species factsheet: Rhinoplax vigil. Downloaded from on 28/11/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from on 28/11/2020.