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Location India, Arunachal Pradesh
Central coordinates 95o 37.50' East  28o 6.00' North
IBA criteria A1, A2
Area 20,200 ha
Altitude 100 - 400m
Year of IBA assessment 2004

Bombay Natural History Society

Site description This IBA is often confused with Dibang Wildlife Sanctuary, also an IBA because of the similarity in the first name. While the Sanctuary covers higher mountainous areas of the Mishmi Hills along the India-China international border, this IBA is in flat and gently sloping terrain, in the lower reaches of the Dibang river up to the Assam-Arunachal Pradesh interstate border. The present IBA includes parts of Dibang Reserve Forest (RF), Kerim RF and the whole of Sirkee proposed RF as mapped in Choudhury (1996). It also includes the entire riverbed of the Dibang, at places up to 8 km wide with sandy and grassy tracts. This IBA forms part of two Endemic Bird Areas (Stattersfield et al. 1998), which is noteworthy. Tall wet savannah grassland occurs on the islets of the Dibang river, while the forest away from the river is mostly Tropical Wet Evergreen. The main forested areas are between Dambuk-Bomjir and Bijari.

Key Biodiversity 

AVIFAUNA: At least 150 bird species have been listed, but the total diversity may be more than 300 species (A. U. Choudhury pers. comm. 2003). This IBA is known for its rich assemblage of threatened birds including the Lesser Adjutant Leptoptilos javanicus, Swamp Francolin Francolinus gularis, Black-breasted Parrotbill Paradoxornis flavirostris, Jerdon's Babbler Chrysomma altirostre and Marsh Babbler Pellorneum palustre (A. U. Choudhury pers. comm. 2003), White-winged Duck Cairina scutulata (Choudhury 1996) and the Bengal Florican Houbaropsis bengalensis (Choudhury 1998). The first record of the Spot-bill Pelican Pelecanus philippensis in Arunachal Pradesh was from the northern edge of this IBA (not far from Mehao IBA) (Choudhury 2000). This is also an important staging area for migratory birds and a new migration route of the Common Crane Grus grus was discovered here (Choudhury 1994).

OTHER KEY FAUNA: Among the major mammals are the Tiger Panthera tigris, Asian Elephant Elephas maximus, Asiatic Wild Water Buffalo Bubalus arnee (=bubalis) and Hog Deer Axis porcinus (Choudhury 2003).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Swamp Francolin Francolinus gularis resident  2004  present  A1  Vulnerable 
White-winged Duck Asarcornis scutulata resident  2004  present  A1  Endangered 
Lesser Adjutant Leptoptilos javanicus resident  2004  present  A1  Vulnerable 
Spot-billed Pelican Pelecanus philippensis resident  2004  present  A1  Near Threatened 
White-rumped Vulture Gyps bengalensis non-breeding  2004  present  A1  Critically Endangered 
Slender-billed Vulture Gyps tenuirostris non-breeding  2004  present  A1  Critically Endangered 
Bengal Florican Houbaropsis bengalensis resident  2004  present  A1  Critically Endangered 
Marsh Babbler Pellorneum palustre resident  2004  present  A1, A2  Vulnerable 
Jerdon's Babbler Chrysomma altirostre resident  2004  present  A1  Vulnerable 
Black-breasted Parrotbill Paradoxornis flavirostris resident  2004  present  A1, A2  Vulnerable 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Dibang Reserve Forest Other 0 protected area overlaps with site 0  
Kerim Reserve Forest Other 0 protected area overlaps with site 0  


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

Acknowledgements Key contributors: Anwaruddin Choudhury, Nur Hussain, Dilip Handique and Leto Mili.


Choudhury, A. U. (1994) A new Crane- migration route discovered. Asian Wetland News 7(1):18.

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

Choudhury, A. U. (1998) The Bengal florican Eupodotis bengalensis Gmelin 1789 in Dibang Valley District of Arunachal Pradesh. J. Bombay Nat. Hist. Soc. 95(2): 342.

Choudhury, A. U. (2000) The Birds of Assam. Gibbon Books and WWF-India, NE Regional Office, Guwahati.

Choudhury, A. U. (2003) The mammals of Arunachal Pradesh. Regency Publications, New Delhi.

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, Cambridge, U.K.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Dibang Reserve Forest and adjacent areas. Downloaded from on 24/10/2016

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