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Location India, Assam
Central coordinates 90o 22.00' East  26o 18.50' North
IBA criteria A1, A4i, A4iii
Area 5,300 ha
Altitude 30 - 455m
Year of IBA assessment 2004

Bombay Natural History Society

Site description The Chakrashila complex includes the Chakrashila Wildlife Sanctuary (4,556 ha) and three adjacent wetlands - Dhir, Diplai and Dakra. The Sanctuary is 68 km from Dhubri, the district headquarters, and 219 km from Guwahati city. The nearest Railway Station is Kokrajhar, which is on the broad gauge line from Howrah to Guwahati. The Sanctuary can be approached from Salkocha, a small town on the National Highway 37, from where Chakrasila is about 10 km. This IBA is an ideal spot for birdwatchers. Its biodiversity provides many niches for several species of residential birds and attracts hundreds of migratory birds. The Sanctuary is hilly, with three lakes (Dhir, Diplai and Dakra) on its southern periphery. There are three major perennial springs inside the Sanctuary: Haohaowi Jhora, Mauriya Jhora and Bamuni Jhora. The Asian Wetland Bureau, and the International Waterfowl and Wetlands Research Bureau have identified the first two lakes as internationally important sites for protection of a number of species. Dhir beel is situated 30 km from Kokrajhar town at the base of Chakrashila Wildlife Sanctuary. During the rainy season, these wetlands get connected with the Brahmaputra river. All these wetlands are rich in aquatic flora and fauna and are breeding grounds for fish. Together, these wetlands constitute more than 800 ha. The site has mainly Moist Deciduous Forest with Sal Shorea robusta as the dominant species. There are grasslands, shrubs and bamboo thickets also. This forest is richly endowed with orchids and other creepers.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Baer's Pochard Aythya baeri winter  2004  present  A1, A4i  Critically Endangered 
Ferruginous Duck Aythya nyroca winter  2004  present  A4i  Near Threatened 
Lesser Adjutant Leptoptilos javanicus resident  2004  present  A1  Vulnerable 
Greater Adjutant Leptoptilos dubius breeding  2004  present  A1  Endangered 
Pallas's Fish-eagle Haliaeetus leucoryphus resident  2004  present  A1  Vulnerable 
White-rumped Vulture Gyps bengalensis non-breeding  2004  present  A1  Critically Endangered 
Greater Spotted Eagle Clanga clanga winter  2004  present  A1  Vulnerable 
Slender-billed Vulture Gyps tenuirostris non-breeding  2004  present  A1  Critically Endangered 
A4iii Species group - waterbirds unknown  2004  20,000 individuals  unknown  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Chakrasila Sanctuary 4,556 protected area contained by site 4,556  


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

Land use

Land-use Extent (% of site)
fisheries/aquaculture -
Notes: Fishing
forestry -
Notes: Forestry
nature conservation and research -
Notes: Nature Conservation
tourism/recreation -
Notes: Tourism and recreation

Acknowledgements Key contributors: Nature’s Beckon, Bablu Dey, Kulojyoti Lahkar and Mridu Paban Phukan.


Barua, M. (1995) Bird observations from Chakrashila Wildlife Sanctuary and adjacent areas: Newsletter for Birdwatchers 35(5); 93-94.

Choudhury, A. U. (2000) The Birds of Assam. Gibbon Books and World Wide Fund for Nature-Northeast Regional Office, Guwahati. Pp. 240.

Lahkar, K. (2003) Birds of Chakrashila Wildlife Sanctuary and adjacent areas. Unpublished. Pp. 10.

Lopez, A. and Mundkur, T. (eds.) (1997) The Asian Waterfowl Census: 1994-1996. Results of the Coordinated Waterbird Census and Overview of the Status of Wetlands in Asia. Wetlands International, Kaula Lumpur. Pp. 118.

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 (2014) Important Bird Areas factsheet: Chakrashila Complex. Downloaded from on 31/10/2014

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