|Central coordinates||87o 49.35' East 25o 0.00' North|
|Year of IBA assessment||2004|
Site description Udhuwa or Udhwa Lake is situated 11 kms southeast of Rajmahal in the Sahebganj district of Jharkhand state. This Bird Sanctuary is constituted by two waterbodies, namely Pataura (155 ha) and Berhale (410 ha). Pataura is a comparatively clean waterbody and the average depth is about 2 m whereas Berhale is a shallow one having average depth of about 70 cm. Berhale is largely choked with aquatic vegetation, with small pockets of clear water. Both these waterbodies are inter-connected by a water channel and the whole bird Sanctuary is connected with River Ganga at Farraka by Udhuwa Nala which is a 25 km stretch. Pataura is surrounded by hillocks on one side, and on the other side, the Forest Department has done some plantations (on the hillocks).
AVIFAUNA: Not much work has been done on this Sanctuary, but Choudhary et al. (1992) have identified 83 species of birds, including many forest species. The list includes such rarities as Nordmann’s Greenshank or Spotted Greenshank Tringa guttifer but this needs confirmation. A. Mishra (pers. comm. 2001) has sighted the Near Threatened Black-necked Stork Ephippiorhynchus asiaticus. At present, it does not qualify in A4iii criteria but once it is properly protected, Udhuwa has great potential to become an important waterfowl refuge (A. Mishra pers. comm. 2001).
OTHER KEY FAUNA: There are not many large mammals of conservation concern. The lake has about 22 fish species, most of them of commercial value (Choudhary et al. 1992).
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Lesser Adjutant Leptoptilos javanicus||resident||2004||present||-||A1||Vulnerable|
|Pallas's Fish-eagle Haliaeetus leucoryphus||resident||2004||present||-||A1||Vulnerable|
|White-rumped Vulture Gyps bengalensis||non-breeding||2004||present||-||A1||Critically Endangered|
|2014||very high||near favourable||medium|
|Good - based on reliable and complete / representative data|
|Agriculture and aquaculture||annual & perennial non-timber crops - small-holder farming||happening now||some of area/population (10-49%)||moderate to rapid deterioration||high|
|Biological resource use||fishing & harvesting aquatic resources - unintentional effects: subsistence/small scale||happening now||whole area/population (>90%)||moderate to rapid deterioration||very high|
|Biological resource use||hunting & collecting terrestrial animals - unintentional effects (species is not the target)||happening now||whole area/population (>90%)||moderate to rapid deterioration||very high|
|Human intrusions and disturbance||work and other activities||happening now||whole area/population (>90%)||moderate to rapid deterioration||very high|
|Invasive & other problematic species, genes & diseases||invasive non-native/alien species/diseases - unspecified species||happening now||whole area/population (>90%)||moderate to rapid deterioration||very high|
|Pollution||agricultural & forestry effluents - type unknown/unrecorded||happening now||some of area/population (10-49%)||slow but significant deterioration||medium|
|Artificial - aquatic||0||0||good (> 90%)||moderate (70-90%)||near favourable|
|Whole area of site (>90%) covered by appropriate conservation designation||A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species||Some limited conservation initiatives are in place||medium|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Udhwa Lake||Sanctuary||6||is identical to site||565|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Artificial - terrestrial||-|
|Artificial - aquatic||-|
|Land-use||Extent (% of site)|
Acknowledgements Key contributor: Arvind Mishra.
Choudhary, S. K., Mishra, A., Ghosh, T. K. and Jha, A. (1992) Udhuwa Lake Bird Sanctuary: Status Report I. Mandar Nature Club, Bhagalpur. Pp. 26.
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Recommended citation BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Udhuwa Lake Bird Sanctuary. Downloaded from http://www.birdlife.org on 28/10/2016
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