Data Zone
Justification of Red List category
This species has a large range and likely at least a moderately large population. In the absence of any recognised threats to the species within the largely inaccessible habitat it is found, the population trend is suspected to be stable. For these reasons the species is evaluated as Least Concern.
Population justification
The population trend is suspected to be stable in the absence of any evidence of declines or substantial threats. This species' population in Laos is considered to be of high importance globally, with trends in this country (low to negligible) similar to those found in the species' previous global assessment (Timmins et al. 2024). This species is considered to have a high dependency on forest habitat, which is estimated to be declining at a slow rate (Global Forest Watch 2024), but large parts of this species' range are basically inaccessible and will be the last forest cleared in the region.
Trend justification
The population trend is suspected to be stable in the absence of any evidence of declines or substantial threats.
Phylloscopus calciatilis occurs in the limestone karst regions of northern and central Viet Nam, and northern and central Lao PDR, and is postulated to extend into similar karst areas in Guangxi, extreme southern China.
Restricted to forest on limestone formations, typically between 700-1,200 m elevation. Much of this is under no threat from humans.
Text account compilers
Martin, R., Rutherford, C.A.
Recommended citation
BirdLife International (2024) Species factsheet: Limestone Leaf-warbler Phylloscopus calciatilis. Downloaded from
https://datazone.birdlife.org/species/factsheet/limestone-leaf-warbler-phylloscopus-calciatilis on 26/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 26/11/2024.