Taiwan Grasshopper-warbler (Locustella alishanensis)

Taiwan Grasshopper-warbler Locustella alishanensis

Current view: Data table and detailed info

Taxonomy

Taxonomic note

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

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.
Rasmussen, P. C.; Round, P. D.; Dickinson, E. C.; Rozendaal, F. G. 2000. A new Bush-warbler (Sylviidae, Bradypterus) from Taiwan. The Auk 117: 279-289.

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	Least Concern
2009	Least Concern
2008	Least Concern
2005	Least Concern
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Species attributes

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land-mass type		Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	15,400 km²
Severely fragmented?	no	-

Population

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

Population justification: The global population size has not been quantified, but the species is described as quite common (del Hoyo et al. 2006), while the population in Taiwan has been estimated at c.10,000-100,000 breeding pairs (Brazil 2009). The population is suspected to be stable in the absence of evidence for any declines or substantial threats.

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

Country/territory distribution

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

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Arable Land	suitable	resident
Grassland	Subtropical/Tropical High Altitude	major	resident
Shrubland	Subtropical/Tropical Dry	suitable	resident
Altitude	100 - 3680 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Taiwan Grasshopper-warbler Locustella alishanensis. Downloaded from https://datazone.birdlife.org/species/factsheet/taiwan-grasshopper-warbler-locustella-alishanensis on 22/11/2024.
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 22/11/2024.