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Location India, Assam
Central coordinates 94o 20.00' East  27o 20.00' North
IBA criteria A1
Area 1,125 ha
Altitude 90 - 95m
Year of IBA assessment 2004

Bombay Natural History Society



Site description Bordoibam-Bilmukh is a large freshwater lake that was created during the great earthquake of 1950. It was part of the River Subansiri, which now flows 7 km away from the lake. The Sanctuary is 50 km from Lakhimpur, the district headquarters, and 455 km from Guwahati. A large number of migratory waterfowl are seen in winter while some globally threatened species such as the Spot-billed Pelican Pelecanus philippensis and Lesser Adjutant Leptoptilos javanicus are seen all over the year. The wetland is fringed by tall emergent vegetation, mainly Arundo donax, where the Swamp Francolin Francolinus gularis was not uncommon some years ago. However, the grassland has been destroyed by villagers, so this bird is now rarely seen. The typical aquatic, floating and emergent vegetation of wetlands is seen in this wetland also. In the drying and dried up part, Arundo donax dominates along with sedges. A few Barringtonia acutangula trees are found on the fringes.

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 
Lesser Adjutant Leptoptilos javanicus resident  2004  present  A1  Vulnerable 
Greater Adjutant Leptoptilos dubius breeding  2004  present  A1  Endangered 
Spot-billed Pelican Pelecanus philippensis resident  2004  present  A1  Near Threatened 
Lesser Kestrel Falco naumanni passage  2004  present  A1  Least Concern 
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 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Bordoibam-Bilmukh Sanctuary 1,125 is identical to site 1,125  

Habitats

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

Land use

Land-use Extent (% of site)
agriculture -
Notes: Agriculture
fisheries/aquaculture -
Notes: Fishing
nature conservation and research -
Notes: Nature Conservation

Acknowledgements Key contributors: Anwaruddin Choudhury, Bikul Goswami, Megamix Nature Club.

References 

Choudhury, A. U. (1990) Proposal for declaring Bordoibam-Bilmukh as a bird sanctuary. Unpublished report to Forest Department, Assam.

Phukan, D., Dutta, N. N., Gogoi, N. N., and Das, A. (1997) Bordoibam- Bilmukh Bird Sanctuary. Megamix Nature Club, Dhakuakhana, Pp. 24.

Talukdar, B. K. (1993) Need to preserve Bordoibam wetland. Newsletter for Birdwatchers 33(5):90.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Bordoibam-Bilmukh Bird Sanctuary. Downloaded from http://www.birdlife.org on 29/07/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife