Limestone Leaf-warbler (Phylloscopus calciatilis)

Limestone Leaf-warbler Phylloscopus calciatilis

Current view: Data table and detailed info

Taxonomy

Taxonomic note

Phylloscopus calciatilis (del Hoyo and Collar 2016) is recognized as a species following work by Alström et al. (2009).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2024	Least Concern
2016	Least Concern
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Species attributes

Migratory status	not a migrant	Forest dependency	high
Land-mass type		Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	314,000 km²
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	suspected	-
Generation length	2.02 years	-	-	-

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.

Country/territory distribution

Country/Territory	Presence	Origin	Resident
China (mainland)	presence uncertain	native	yes
Laos	extant	native	yes
Vietnam	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	700 - 1200 m	Occasional altitudinal limits

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.