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Description |
Geographic Range [top]
Range Description: Jabouilleia danjoui is known from east Tonkin, north, central and south Annam, Vietnam, where small numbers have been recorded at many sites, and central Laos, where a fairly large population apparently survives near the Vietnamese border. In East Tonkin, it is found very close to the border with China and probably occurs in suitable habitat there also (Vogel et al. 2003). Race naungmungensis has been described from the Naung Mung area of Kachin State, northern Myanmar (Rappole et al. 2005). It is very localised in occurrence and absent from areas of apparently suitable habitat (R. Craik in litt. 2011, S. Mahood in litt. 2011).
Countries occurrence:
Native:
Lao Peoples Democratic Republic; Myanmar; Viet Nam
Additional data:
? Continuing decline in area of occupancy (AOO): Yes
? Extreme fluctuations in area of occupancy (AOO): No ? Estimated extent of occurrence (EOO) - km2: 126000
? Continuing decline in extent of occurrence (EOO): Yes ? Extreme fluctuations in extent of occurrence (EOO): No
? Continuing decline in number of locations: Unknown
? Extreme fluctuations in the number of locations: No ? Lower elevation limit (metres): 50
? Upper elevation limit (metres): 2100
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: The global population size has not been formerly quantified, but the species is described as generally uncommon, although locally common (del Hoyo et al. 2007). The number of mature individuals is preliminarily estimated at fewer than 20,000.
Trend Justification: Data on population trends are lacking, but high rates of forest clearance and degradation are occurring throughout much of the speciess range (J. Pilgrim in litt. 2011), the effects of which are perhaps partially buffered by the speciess occurrence in montane forest in some areas and its apparently tolerance of some habitat modification (del Hoyo et al. 2007). On the basis of this information, a moderately rapid population decline is suspected.
Current Population Trend: Decreasing
Additional data:
? Number of mature individuals: 10000-19999 ? Continuing decline of mature individuals: Yes
? 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: In south Annam, subspecies danjoui is found in montane evergreen forest between 1,500 and 2,100 m, but the northern subspecies parvirostris is mainly found in lowland forest between 50 and 900 m, ascending locally to 1,650 m. This species frequents the lower storey, often foraging on the ground. It is noted to tolerate some habitat modification as it is able to survive in secondary forest (del Hoyo et al. 2007).
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 5.5
Movement patterns: Not a Migrant
Threats [top]
Major Threat(s): This species is threatened by deforestation and forest degradation throughout its range, particularly in areas where it occurs at lower elevations. The occurrence of subspecies danjoui at higher elevations may render is susceptible to the effects of projected climate change.
Conservation Actions [top]
Conservation Actions: Conservation Actions Underway
It occurs in several protected areas throughout its range, including Nakai-Nam Theun NBCA in Laos, Ke Go, Vu Quang and Pu Mat nature reserves in Vietnam.
Conservation Actions Proposed
Conduct repeated surveys within the speciess range to determine its current distribution and abundance, as well as assess population trends. Monitor rates of habitat loss. Conduct ecological studies to improve understanding of its precise habitat requirements, tolerance of secondary habitats and response to fragmentation. Increase the area of suitable habitat that has protected status.
Citation: BirdLife International. 2015. Jabouilleia danjoui. The IUCN Red List of Threatened Species 2015: e.T22715999A66593652. http://dx.doi.org/10.2305/IUCN.UK.2015-4.RLTS.T22715999A66593652.en. Downloaded on 22 July 2016.
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