• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic note

Phylloscopus intermedius (del Hoyo and Collar 2016) was previously listed as Seicercus affinis.

 

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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2018	Least Concern
2016	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Migratory status	altitudinal migrant	Forest dependency	high
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	3,880,000 km2
Extent of Occurrence (non-breeding)	2,690,000 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	suspected	-
Generation length	3.1 years	-	-	-

Population justification: The global population size has not been quantified, but the species is reported to be locally common (Baker 1997), while the population in China has been estimated at c.100-10,000 breeding pairs (Brazil 2009).

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Bangladesh	extant	native
Bhutan	extant	native
China (mainland)	extant	native
India	extant	native
Laos	extant	native
Myanmar	extant	native
Nepal	extant	native
Vietnam	extant	native

Country/Territory	IBA Name
Laos	Eastern Bolikhamxay Mountains
Laos	Nam Ha
Vietnam	Bi Dup
Vietnam	Chu Yang Sin
Vietnam	Cong Troi
Vietnam	Fan Si Pan
Vietnam	Kon Ka Kinh
Vietnam	Ngoc Linh
Vietnam	Tuyen Lam

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	suitable	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude		Occasional altitudinal limits

Purpose	Scale
Food - human	subsistence, national
Pets/display animals, horticulture	subsistence, national

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Recommended citation
BirdLife International (2024) Species factsheet: White-spectacled Warbler Phylloscopus intermedius. Downloaded from https://datazone.birdlife.org/species/factsheet/white-spectacled-warbler-phylloscopus-intermedius on 23/11/2024.
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 23/11/2024.