Family Hornbills (Bucerotidae)


Rufous-necked Hornbill (Aceros nipalensis)


French: Calao à cou roux German: Nepalhornvogel Spanish: Cálao del Nepal

Buceros Nipalensis


, 1829,

Kathmandu, Nepal


Birds from S China sometimes separated as race yunnanensis. Monotypic.


S Bhutan and NE India (Sikkim and N West Bengal to Arunachal and S Assam Hills) E to S China (W & S Yunnan), and S to N & S Myanmar, N & W Thailand, N Laos and NW Vietnam.

Descriptive notes

90–100 cm; male 2500 g, female 2270 g. Very large hornbill; has rather pale yellow bill with black stripes. Male has rufous head, neck and underparts, glossy black... read more


Utters loud croaks, roars and cackling sounds during display, and short barking notes “kuk... read more


Dense evergreen and deciduous hill forest, mainly along ridges and in mountains, at 150–2200... read more

Food and feeding

Mainly fruits, including figs and mangoes, but dietary specifics poorly known, although includes Dysoxylum during breeding season... read more


Little known. Lays in Jan–Jun; pair engaged in courtship display and nest-hole excavation, mid-Apr, in Bhutan. Monogamous and... read more


Probably sedentary, although unspecified altitudinal migrations reported in Bhutan and suggested... read more

Status and conservation

VULNERABLE. CITES II. Population estimated 1500–7000 mature individuals within an overall range of 285,000 km2. Despite widespread distribution, species has disappeared... read more

Recommended citation

Kemp, A.C. & Kirwan, G.M. (2019). Rufous-necked Hornbill (Aceros nipalensis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 17 July 2019).