Rufous-necked Hornbill Aceros nipalensis


Bird, J.P., Martin, R., Akçakaya, H.R., Gilroy, J., Burfield, I.J., Garnett, S.G., Symes, A., Taylor, J., Şekercioğlu, Ç.H. and Butchart, S.H.M. 2020. Generation lengths of the world’s birds and their implications for extinction risk. Conservation Biology 34(5): 1252-1261.

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

Chimchome, V.; Vidhidharm, A.; Simchareon; Saksit; Bumrungsri, S.; Poonswad, P. 1997. Comparative study of the breeding biology and ecology of two endangered hornbill species in Huai Kha Khaeng Wildlife Sanctuary, Thailand. In: Poonswad, P. (ed.), The Asian hornbills: ecology and conservation, pp. 111-129. Biotec, Bangkok.

Choudhury, A. 2003. Birds of Eaglenest Wildlife Sanctuary and Sessa Orchid Sanctuary, Arunachal Pradesh, India. Forktail 19: 1-13.

Choudhury, A. 2009. Significant recent ornithological records from Manipur, north-east India, with an annotated checklist. Forktail 25: 71-89.

Dasgupta, S., and Hilaluddin. 2012. Differential effects of hunting on populations of hornbills and imperial pigeons in the rainforests of the Eastern Indian Himalaya. Indian Forester 138(10): 902-909.

Datta, A. 2002. Status of hornbills and hunting among tribal communities in eastern Arunachal Pradesh. Unpublished Report. Submitted to the Wildlife Conservation Society, New York and WCS-India Program, Bangalore.

Datta, A. 2009. Observations on Rufous-necked Aceros nipalensis and Austen's Brown Anorrhinus austeni Hornbills in Arunachal Pradesh: natural history, conservation status and threats. Indian Birds 5(4): 108-117.

DoFPS. 2017. Forest and Nature Conservation Rules and Regulations of Bhutan. Thimphu, Bhutan

Dorji, S. In prep. Habitat use and conservation status of Rufous-necked hornbill in Jigme Singye Wangchuck national Park of Bhutan . Unpublished B.Sc.thesis. College of Natural Resources, Royal University of Bhutan, Lobesa, Bhutan.

eBird. 2020. eBird: An online database of bird distribution and abundance [web application]. Ithaca, NY, USA Available at:

IUCN. 2020. The IUCN Red List of Threatened Species. Version 2020-3. Available at: (Accessed: 10 December 2020).

Jinamoy S, Poonswad P, Pattanavibool A, Chimchome V, Thongsikem S, and Trisurat Y. 2013. Estimating Density of Rufous-Necked Hornbill (Aceros nipalensis) using Distance Sampling in Thung Yai Naresuan Wildlife Sanctuary. Journal of Wildlife in Thailand 20(1): 1-14.

Jinamoy, S., Y. Trisurat, A. Pattanavibool, C. Pisdamkham, S. Thongsikem, V. Veerasamphan, P. Poonswad, and A. Kemp. 2014. Predictive distribution modelling for rufous-necked hornbill Aceros nipalensis (Hodgson, 1829) in the core area of the Western Forest Complex, Thailand. Raffles Bulletin of Zoology 62: 12-20.

Jornburom, P., Chimchome, V., Pattnavibool, A., and Poonswad, P. 2010. Density estimation of hornbills in Huai Kha Khaeng Wildlife Sanctuary, Uthai Thani Province. Thailand Journal of Forestry 29: 1-11.

Kemp, A. C. 2001. Family Bucerotidae (hornbills). In: J. D. Hoyo, A. Elliot, J. Sargatal & D. A. Christie (ed.), In Handbook of the Birds of the World, pp. 436–523. Lynx Edicions, Barcelona, Spain.

Le Manh Hung, Tran Thieu Du, and Giang A. Long. 2004. Building the foundation for conservation of Rufous-necked Hornbill Aceros nipalensis in Tao communem Mucangchai district, Yen Bai Province, Vietnam. Hanoi Birdwatching Club and Yen Bai provincial Forest Protection Department.

Naing, T. Z. 2015. Distribution and status of Rufous-necked Hornbill Aceros nipalensis in Myanmar. Malayan Nature Journal 67(158-172).

Naniwadekar, R. and Datta, A. 2013. Spatial and temporal variation in hornbill densities in Namdapha Tiger Reserve, Arunachal Pradesh, north-east India. Tropical Conservation Science 6: 734-748.

Naniwadekar, R., Datta, A., Raghunath, R., Teegalapalli, K., Ghosalkar, M., Borah, B., and Lotha, L. 2016. Hornbill distribution in a biodiversity hotspot: Occupancy modelling for hornbills in north-east India . Report submitted to the Forest Departments of Nagland, Mizoram, Tripura, Assam and Meghalaya. Nature Conservation Foundation and Whitley Fund for Nature, March 2016..

Naniwadekar, R., Mishra, C., Isvaran, K., Madhusudan, M. D., and Datta, A. 2015. Looking beyond parks: the conservation value of unprotected areas for hornbills in Arunachal Pradesh, Eastern Himalaya. Oryx 49: 303-311.

Naniwadekar, R.; Mishra, C.; A., and Datta, A. 2015b. Fruit resource tracking by hornbill species at multiple scales in a tropical forest in India. Journal of Tropical Ecology 31(477-490).

Ouithavon K, Poonswad P, Bhumbhakpan N & Laohajinda V. 2005. Some characteristics of two sympatric hornbill species (Aves: Bucerotidae) and fruit availability during their breeding season in Huai Kha Khaeng Wildlife Sanctuary, Thailand. In: Lum S & Poonswad P (ed.), Proceedings of the Third International Hornbill Workshop on The Ecology of Hornbill: Reproduction and Population, pp. 131-140. Pimdee Karnpim Co., Ltd, Bangkok, Thailand.

Penjore, U. 2010. Bhutan – The last bastion of the hornbill. Available at: (Accessed: December 2019).

Poonswad, P., A. C. Kemp, and M. Strange. 2013. Hornbills of the world: A photographic guide. Draco Publishing and Distributions Pte. Ltd.,Singapore and Hornbill Research Foundation, Thailand.

Pradhan, K., Ganguly, D., Shome, A., Naniwadekar, R., Datta, A., and Basu Roy, A. 2020. Study of hornbills in the forests of Himalayan foothills of West Bengal with emphasis on their foraging habit, mate selection and breeding preferences. . Progress Report submitted to the West Bengal Forest Department. Nature Mates, Kolkata in collaboration with Nature Conservation Foundation, Mysore/Bangal: 26 pp.

Sherub, K. 2017. Foraging behavior, food resources, and habitat use of Rufous-necked hornbill (Aceros nipalensis) in Jigme Singye Wangchuck National Park, Bhutan. Unpublished M.Sc. Thesis. Forest Research Institute. Dehradun, Uttarakhand, India.

Shukla, U., Naniwadekar, R. and Datta, A. 2016. Abundance estimates of the Rufous-necked hornbill Aceros nipalensis, and characterization of a montane subtropical tropical forest in the Indian Eastern HimalayaAbundance estimates of the Rufous-necked hornbill Aceros nipalensis, and characterization of a montane subtropical tropical forest in the Indian Eastern Himalaya. Indian Bird 12(4 & 5): 128-134.

Spierenburg, P. 2005. Birds in Bhutan: status and distribution. Oriental Bird Club, Bedford, U.K.

Tifong, J.; Chimchome, V.; Poonswad, P. and Pattnavibool, A. 2007 . Home range and habitat use of Rufous-necked Hornbill (Aceros nipalensis) by radio tracking in Huai Kha Khaeng Wildlife Sanctuary, Uthai Thani Province. Thailand Journal of Forestry 26: 28-39.

Trisurat, Y.; Chimchome, V.; Pattanavibool, A.; Jinamoy, S.; Thongaree, S.; Kanchanasakha, B.; Simcharoen, S.; Sribuarod, K.; Mahannop, N.; Poonswad. P. 2013. An assessment of the distribution and conservation status of hornbill species in Thailand. Oryx 47: 441-450.

Ugyen Wangchuck Institute for Conservation and Environmental Research. 2017. Report on HORNBILLS: Connecting Environment, Economy and Culture in Bhutan (Case study on Nesting Ecology and Diet Sources of Rufous-necked hornbill in the east and south-east buffer zone of Phrumsengla National Park under Lhuentse and Mongar). Department of Forests and Park Services, Ministry of Agriculture and Forests. Royal Government of Bhutan. Lamai Goempa: Bumthang.

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).

Search for photos and videos, and hear sounds of this species from the Macaulay Library

View photos and videos and hear sounds of this species from the Internet Bird Collection

Media resources

Recommended citation
BirdLife International (2023) Species factsheet: Aceros nipalensis. Downloaded from on 04/06/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 04/06/2023.