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Location India, Assam
Central coordinates 94o 54.33' East  27o 35.28' North
IBA criteria A1
Area 9,500 ha
Altitude 90 - 100m
Year of IBA assessment 2004

Bombay Natural History Society

Site description This large grassland-wetland complex in Dhemaji district in eastern Assam is located northwest of Dibru-Saikhowa National Park, on the north bank of the Brahmaputra River. The site comprises two reserve forests, Jamjing (8,000 ha) and Sengajan (1,200 ha). It is accessible from Jonai and Dhemaji towns. The main Jamjing beel (300 ha) is outside the Reserve Forest. This poorly known tract has a number of threatened bird species, such as the White-bellied Heron Ardea insignis and Spot-billed Pelican Pelecanus philippensis (Choudhury 1992, 2000). As in Dibru- Saikhowa National Park, Salix swamp forest is a feature of this IBA. Large parts of the area have been encroached upon for seasonal cultivation of paddy and mustard. Tree growth is stunted due to prolonged flooding but in some parts Salix trees are the dominant vegetation. The margins of the wetland are usually covered with reeds such as Arundo donax.

Key Biodiversity 

AVIFAUNA: More than 200 species of birds have been recorded in the area (A. U. Choudhury pers. comm. 2003). There were past records of the White-winged Duck Cairina scutulata. The site qualifies A1 (Threatened Species) criteria as it has two Critically Endangered species of vultures, two Endangered species (one with old records only) and four Vulnerable species. It also has two Near Threatened species. As no detailed work has been done on the bird life of this site, many more species of these categories are likely to occur here.

OTHER KEY FAUNA: Not much is known about the flora and fauna of this area, but Asian Elephant Elephas maximus, Wild Buffalo Bubalus arnee (= bubalis), and Tiger Panthera tigris are known to occur occasionally. In the wetland, Fishing Cat Prionailurus viverrinus, and otters Lutra lutra and Lutrogale perspicillata are found. Chinese Pangolin Manis pentadactyla is also reported to be present, but difficult to see due to its nocturnal behaviour.

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 
White-bellied Heron Ardea insignis resident  2004  present  A1  Critically Endangered 
Spot-billed Pelican Pelecanus philippensis resident  2004  present  A1  Near Threatened 
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 

IBA Monitoring

2003 medium 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%) very rapid to severe deterioration low
Agriculture and aquaculture livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming happening now small area/few individuals (<10%) slow but significant deterioration low
Biological resource use fishing & harvesting aquatic resources - unintentional effects: subsistence/small scale happening now small area/few individuals (<10%) slow but significant deterioration low
Biological resource use hunting & collecting terrestrial animals - intentional use (species being assessed is the target) happening now small area/few individuals (<10%) very rapid to severe deterioration low
Invasive & other problematic species, genes & diseases invasive non-native/alien species/diseases - named species happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution agricultural & forestry effluents - soil erosion, sedimentation happening now small area/few individuals (<10%) slow but significant deterioration low


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

Land use

Land-use Extent (% of site)
agriculture -
Notes: Agriculture
fisheries/aquaculture -
Notes: Fishing
forestry -
Notes: Forest
rangeland/pastureland -
Notes: Grazing

Acknowledgements Key contributors: Anwaruddin Choudhury and Bikul Goswami.


Choudhury, A. (1992) Sighting of the Great Whitebellied Heron in Jamjing Reserve Forest, Assam. Newsletter for Birdwatchers 32(7&8): 17.

Choudhury, A. (2000) Birds of Assam, Gibbon Books & WWF-India NE Region, Guwahati.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Jamjing and Sengajan. Downloaded from on 23/10/2016

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