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Location India, Assam
Central coordinates 94o 28.00' East  27o 13.00' North
IBA criteria A1, A4i
Area 2,500 ha
Altitude 0
Year of IBA assessment 2004

Bombay Natural History Society

Site description This site includes the riverine tracts of the Brahmaputra River near its confluence with one of its tributaries, the Jhanji. In addition, there are some lakes and marshes such as Digholi, Misamari, Kawoimari and Laujan, which harbour avifauna. Situated 30 km northeast of Jorhat, the district headquarters, this wetland complex is an important site for waterbirds. The terrain is flat, being part of the floodplains of the Brahmaputra. During monsoon, the major part of this area is completely inundated.

Key Biodiversity 

AVIFAUNA: Although a full checklist is not available, information on many threatened species is available. This IBA is particularly noteworthy for the records of Baer’s Pochard Aythya baeri, which has been listed as Vulnerable. It has been recorded in four beels within this site, Misamari, Digholi, Kawoimari and Laujan (Choudhury 2000). A few thousand waterfowl, including ducks and geese, winter in the area. Seven more threatened species were recorded in the area.

OTHER KEY FAUNA: Gangetic Dolphin Plantanista gangetica inhabits the rivers and various turtles are also found.

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 
Baer's Pochard Aythya baeri winter  2004  present  A1  Critically Endangered 
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 
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 

IBA Monitoring

2003 high not assessed not assessed
Good - based on reliable and complete / representative data

Agriculture and aquaculture annual & perennial non-timber crops - small-holder farming happening now small area/few individuals (<10%) moderate to rapid deterioration low
Agriculture and aquaculture marine and freshwater aquaculture - industrial aquaculture happening now small area/few individuals (<10%) slow but significant deterioration low
Biological resource use fishing & harvesting aquatic resources - unintentional effects: large scale happening now some of area/population (10-49%) moderate to rapid deterioration high
Biological resource use hunting & collecting terrestrial animals - intentional use (species being assessed is the target) happening now small area/few individuals (<10%) moderate to rapid deterioration low


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

Land use

Land-use Extent (% of site)
agriculture -
Notes: Agriculture
fisheries/aquaculture -
Notes: Fishing

Acknowledgements Key contributors: Prashanta Kumar Saikia, Shanta Sharma, Anwaruddin Choudhury and Kulojyoti Lahkar.


Choudhury, A. U. (2000) The Birds of Assam. Gibbon Books & WWFIndia, NE Regional Office, Guwahati.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Jhanjimukh - Kokilamukh. Downloaded from on 29/10/2016

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