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Description |
Geographic Range [top]
Range Description: Stachyris oglei is endemic to the Patkai and Mishmi Hills of eastern Arunachal Pradesh, north-east India and adjacent northern Myanmar (BirdLife International 2001). It is rather poorly known, in part because little ornithological work has been conducted within its range. Historical collectors considered it rare and very local. However, a healthy population has recently been discovered in Namdapha National Park (Arunachal Pradesh), suggesting that it may be locally common.
Countries occurrence:
Native:
India; Myanmar
Additional data:
? Continuing decline in area of occupancy (AOO): Yes
? Extreme fluctuations in area of occupancy (AOO): No ? Estimated extent of occurrence (EOO) - km2: 16500
? Continuing decline in extent of occurrence (EOO): Yes ? Extreme fluctuations in extent of occurrence (EOO): No
? Number of Locations: 11-100 ? Continuing decline in number of locations: Yes
? Extreme fluctuations in the number of locations: No ? Lower elevation limit (metres): 450
? Upper elevation limit (metres): 1800
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: The population size is preliminarily estimated to fall into the band 2,500-9,999 mature individuals. This equates to 3,750-14,999 individuals in total, rounded here to 3,500-15,000 individuals.
Trend Justification: Although this speciess tolerance of habitat alteration is unknown, continuing habitat degradation across its range suggests that moderate population declines could be occurring, resulting in a precautionary negative trend overall.
Current Population Trend: Decreasing
Additional data:
? Number of mature individuals: 2500-9999 ? Continuing decline of mature individuals: Yes
? Extreme fluctuations: No ? Population severely fragmented: Yes
? No. of subpopulations: 2-100 ? Continuing decline in subpopulations: Yes
? Extreme fluctuations in subpopulations: No ? All individuals in one subpopulation: No
? No. of individuals in largest subpopulation: 1-89
Habitat and Ecology [top]
Habitat and Ecology: It breeds during April and May in moist, dense scrub in rocky ravines up to 1,800 m, and winters from 400 m to at least 900 m in bamboo and undergrowth of primary evergreen forest on rocky hillsides. It is generally encountered in winter in monospecific flocks of up to 20 individuals and is quite vocal, but wary and skulking.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 3.7
Movement patterns: Not a Migrant
Threats [top]
Major Threat(s): Its tolerance of habitat degradation is not known, making identification of specific threats difficult. However, habitat loss, degradation and fragmentation as a result of commercial logging, clearance for tea cultivation and shifting agriculture are all possible threats. Forest in and around Namdapha National Park is becoming increasingly denuded owing to overgrazing of domestic livestock and collection of firewood. In 1992, an estimated 61% of Arunachal Pradesh remained forested, but rates of habitat destruction have increased along with the growing tribal population within the state, which doubled between 1970 and 1990.
Conservation Actions [top]
Conservation Actions: Conservation Actions Underway
The only known substantial population is in Namdapha National Park, Arunachal Pradesh, although it probably occurs in adjacent Kamlang Wildlife Sanctuary.
Conservation Actions Proposed
Conduct surveys in suitable habitat to establish its range, distribution and population status and to assess its habitat requirements and main threats. Make recommendations for its conservation, based on survey findings, including the establishment of protected areas, linked to existing reserves where appropriate. Discourage further large-scale montane timber extraction within its range. Promote widespread conservation awareness initiatives in hill and mountain communities, aimed at reducing shifting agriculture. Support proposals to establish a 100-km2 buffer zone along the western lowland boundary of Namdapha National Park and effectively protect core areas.
Citation: BirdLife International. 2016. Stachyris oglei. The IUCN Red List of Threatened Species 2016: e.T22716261A94487250. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22716261A94487250.en. Downloaded on 19 January 2017.
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