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Location India, Arunachal Pradesh
Central coordinates 95o 30.00' East  27o 13.00' North
IBA criteria A1, A2
Area 8,000 ha
Altitude 120 - 400m
Year of IBA assessment 2004

Bombay Natural History Society

Site description This large Tropical Wet Evergreen Forest area is little explored by scientists. It lies adjacent to Assam’s Upper Dihing (West Block) and Joypur Reserve Forests. The forest is dominated by tall dipterocarps, especially Hollong (Dipterocarpus macrocarpus), which grows up to 50 m. The area is hilly, being part of Patkai Range, is known for the rare White-winged Duck Cairina scutulata.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
White-winged Duck Asarcornis scutulata resident  2004  present  A1  Endangered 
White-bellied Heron Ardea insignis resident  2004  present  A1  Critically Endangered 
Pale-capped Pigeon Columba punicea resident  2004  present  A1  Vulnerable 
Rufous-necked Hornbill Aceros nipalensis resident  2004  present  A1  Vulnerable 
Yellow-vented Warbler Phylloscopus cantator 2004  present  A2  Least Concern 
Beautiful Nuthatch Sitta formosa resident  2004  present  A1  Vulnerable 


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

Acknowledgements Key contributor: Anwaruddin Choudhury.


BirdLife International (undated) Important Bird Areas (IBAs) in Asia: Project briefing book. BirdLife International, Cambridge, U.K. Unpublished.

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

Choudhury, A. U. (1996) Survey of the White-winged Wood Duck and the Bengal Florican in Tinsukia district and adjacent areas. The Rhino Foundation for Nature in NE India, Guwahati. Pp. 82.

Choudhury, A. U. (2002) Conservation of the Whitewinged Wood Duck Cairina scutulata in India. Pp. 52-64. In: Proceedings of the Salim Ali Centenary Seminar on the Conservation of Avifauna of Wetlands and Grasslands, 1996. (Eds: Rahmani, A. R. and Ugra, G.). Bombay Natural History Society, Mumbai.

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: Namsangmukh - Borduria. Downloaded from on 21/10/2014

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