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

Taxonomic note

Locustella accentor (del Hoyo and Collar 2016) was previously listed as Bradypterus accentor.

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
2021	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	Near Threatened

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

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	822 km2
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	inferred	-
Generation length	2.32 years	-	-	-

Population justification: The global population size has not been quantified, but the species is described as fairly common within its preferred altitudinal range (del Hoyo et al. 2006). Density is considered low, with only four to five singing birds likely to be encountered in a full morning's walk within the narrow elevational range (Madge 2020). This suggests that the overall population size is unlikely to be large, and may be in the low thousands at most. There is no indication that the population is declining, and the habitat is not under threat, hence the population is presently considered stable. The current preferred elevation range of the species is at least 1,000 m below the peaks of the mountains on which it is found, although if it is impacted by climate change the extent of suitable habitat will decrease. No upslope shift has been noted for the species to date, though it is unclear that there is sufficient information available to detect such a movement.

Trend justification: Within the elevational range of the species habitat is currently secure. The only loss of forest cover has been through very few natural landslips (Global Forest Watch 2021). In the absence of direct threats, the population is considered stable.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Malaysia	extant	native	yes

Country/Territory	IBA Name
Malaysia	Lanjak Entimau Wildlife Sanctuary
Malaysia	Mount Kinabalu
Malaysia	Mulu - Buda Protected Area
Malaysia	Trus Madi Range

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	2135 - 2745 m	Occasional altitudinal limits	(max) 3660 m

Threat (level 1)	Threat (level 2)	Impact and Stresses
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation

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Recommended citation
BirdLife International (2024) Species factsheet: Friendly Grasshopper-warbler Locustella accentor. Downloaded from https://datazone.birdlife.org/species/factsheet/friendly-grasshopper-warbler-locustella-accentor 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.