LC
Taiwan Grasshopper-warbler Locustella alishanensis



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.
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
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 -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 15,400
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Stable suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 3.5 - - -

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).

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 Occurrence status Presence Resident Breeding Non-breeding Passage
Taiwan, China N Extant 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 1200 - 3000 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2022) Species factsheet: Locustella alishanensis. Downloaded from http://www.birdlife.org on 08/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 08/08/2022.