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Location India, Arunachal Pradesh
Central coordinates 96o 50.00' East  27o 50.00' North
IBA criteria A1, A2
Area 200,000 ha
Altitude 1,000 - 5,000m
Year of IBA assessment 2004

Bombay Natural History Society

Site description Chaglagaum-Denning-Walong is a large wilderness in the Lohit district of Arunachal Pradesh, along the border with China (Tibet). Chaglagaum is a proposed reserve forest, while Denning is reserve forest in the west of Chaglagaum. The River Lohit forms the eastern and southern boundary of this IBA. The northern mountain ranges along the China border remain snow-covered for the greater part of the year. Two villages, Goiliang and Chaglagaum, are within the Chaglagaum proposed reserve forest. The Goiliang village lies in the southeast part of the area while Chaglagaum is in the north. The Lohit, Dallai, Daf and Tiding are the main rivers. Other important rivers and streams are Haramachi, Kuronmachi, Daren, Kajop, Kazomiyu, Ami, Telua, Tasit, Chengai and Katso. The vegetation is of Subtropical Broadleaf and Conifers up to middle elevation, above which occurs Temperate Forest of Broadleaf and Pine and other mixed conifers, especially in the north. Further up occurs Alpine and Sub-alpine Scrub.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Wood Snipe Gallinago nemoricola breeding  2004  present  A1  Vulnerable 
Rufous-necked Hornbill Aceros nipalensis resident  2004  present  A1  Vulnerable 
Snowy-throated Babbler Stachyris oglei resident  2004  present  A1  Vulnerable 
Beautiful Nuthatch Sitta formosa resident  2004  present  A1  Vulnerable 
Rusty-bellied Shortwing Brachypteryx hyperythra resident  2004  present  A1, A2  Near Threatened 


IUCN habitat Habitat detail Extent (% of site)
Forest   -
Shrubland   -

Acknowledgements Key contributor: Asif Hazarika.


Ali, S. and Ripley, S. D. (1987) Compact Edition of the Birds of India and Pakistan. Oxford University Press, New Delhi.

BirdLife International (2001) Threatened Birds of Asia: The BirdLife International Red Data Book. BirdLife International, Cambridge, U.K.

BirdLife International (undated) Important Bird Areas of Asia. Briefing Book 103 pp. Unpublished.

Haridasan, K., Borang, A. and Singh, P. (1999) Baseline survey of Biodiversity in high priority biologically rich areas of Arunachal Pradesh. State Forest Research Institute, Itanagar.

Hazarika, A. A. (2003) A survey on the Biome-restricted avifauna of Chaglagaum proposed reserve forest. Report submitted to the Bombay Natural History Society, Mumbai. Pp.54

Singh, P. (1994) Recent bird records from Arunachal Pradesh, India. Forktail 10: 65-104.

Stattersfield, A. J., Crosby, M. J., Long, A. J. and Wege, D. C. (1998) Endemic Bird Areas of the World: Priorities for Biodiversity Conservation. BirdLife Conservation Series No. 7. BirdLife International, U.K.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Chaglagaum - Denning - Walong. Downloaded from on 31/08/2014

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