| Citation |
|
Description |
Geographic Range [top]
Range Description: Graminicola bengalensis is known from the terai of northern India (highly localised but common at a few sites from Uttar Pradesh eastwards to the Brahmaputra lowlands), southern Nepal (c.2,000 pairs), Bangladesh (rare and highly local in the north), mainland China (rare resident in Guangxi, north Guangdong and Hainan), Hong Kong (China), Myanmar (formerly resident in Tenasserim, current status unknown), Thailand (former resident in the central region, last record in 1923, probably extinct) and Vietnam, where it was a former resident in east Tonkin (P. Leader in litt. 2007). Although still common at a few sites, including Chitwan National Park, Nepal, it has apparently disappeared from many previous localities although it is easily overlooked when not singing and maybe under-recorded in much of its range (Sagar Baral et al. 2006).
Countries occurrence:
Native:
Bangladesh; China; Hong Kong; India; Myanmar; Nepal
Regionally extinct:
Thailand; Viet Nam
Continuing decline in area of occupancy (AOO): Unknown
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 755000
Continuing decline in extent of occurrence (EOO): Unknown
Extreme fluctuations in extent of occurrence (EOO): No
Continuing decline in number of locations: Unknown
Extreme fluctuations in the number of locations: No
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: M. J. Crosby (in litt. undated) estimated that, although known populations total just a few thousand birds, the global population probably exceeds 10,000 individuals, given the limited survey effort in northern India, Myanmar and south-east China. It is placed in the band 10,000-19,999 individuals here, equating to 6,667-13,333 mature individuals, rounded here to 6,000-15,000 mature individuals.
Trend Justification: The species is suspected to be in moderately rapid decline, owing to drainage, burning and degradation by cattle and people of its tall grass wetland habitat.
Current Population Trend: Decreasing
Additional data:
?Number of mature individuals: 6000-15000 ?Continuing decline of mature individuals: Unknown
?Extreme fluctuations: No ?Population severely fragmented: No
?Continuing decline in subpopulations: Unknown
?Extreme fluctuations in subpopulations: No ?All individuals in one subpopulation: No
Habitat and Ecology [top]
Habitat and Ecology: It occurs in tall (taller than 1 m) lowland wet grassland, reed-swamp and other emergent vegetation in or bordering freshwater swamps or along banks of rivers in lowlands (Sagar Baral et al. 2006). In China it also occurs in areas dominated by dwarf bamboo (P. Leader in litt. 2007).
Systems: Terrestrial; Freshwater
Continuing decline in area, extent and/or quality of habitat: Unknown
Generation Length (years): 3.6
Movement patterns: Not a Migrant
Threats [top]
Major Threat(s): It is restricted to undisturbed grassland and is therefore susceptible to modification of grassland and wetland habitat. Drainage, burning, over-grazing and conversion to agriculture are the most pertinent threats.
Conservation Actions [top]
Conservation Actions: Conservation Actions Underway
It occurs in a number of protected areas, including Kaziranga, Chitwan, Sukila Phanta, Tappu and Bardia national parks.
Conservation Actions Proposed
Survey extensively in its former range, particularly in south-east China, to determine current status. Research the effects of different threatening processes and grassland management regimes. Increase the effectiveness of protected areas where it is known to occur. Protect additional areas of suitable habitat at key sites, in both strictly protected areas and community-led multiple use areas. Clarify the taxonomic status of the species in light of a suggested recent split between the Chinese and Indian population (Leader et al. 2010).
Citation: BirdLife International. 2012. Graminicola bengalensis. The IUCN Red List of Threatened Species 2012: e.T22715569A38221399. http://dx.doi.org/10.2305/IUCN.UK.2012-1.RLTS.T22715569A38221399.en. Downloaded on 06 June 2016.
Disclaimer: To make use of this information, please check the .
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided |
