NT
Long-billed Grasshopper-warbler Locustella major



Taxonomy

Taxonomic note
Locustella major (del Hoyo and Collar 2016) was previously listed as Bradypterus major.

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
2016 Near Threatened C1+2a(i)
2012 Near Threatened C1+2a(i)
2008 Near Threatened C1; C2a(i)
2004 Near Threatened
2000 Lower Risk/Near Threatened
1996 Vulnerable
1994 Vulnerable
1988 Threatened
Species attributes

Migratory status altitudinal migrant Forest dependency Does not normally occur in forest
Land mass type Land-mass type - continent
Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 263,000 medium
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 Decreasing poor 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) 1-9 - - -
Decline (10 years/3 generation past and future) 1-9 - - -
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 reported to be rather scarce (Baker 1997).

Trend justification: A slow and on-going population decline is suspected to be occurring as a result of habitat degradation and loss through agricultural change.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
China (mainland) N Extant Yes
India N Extant Yes
Pakistan N Extant Yes
Tajikistan V Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
India Tirunelveli Reserve Forest

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable resident
Grassland Temperate major breeding
Shrubland Subtropical/Tropical Dry suitable non-breeding
Shrubland Temperate suitable breeding
Altitude 2400 - 3600 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Nomadic grazing Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2022) Species factsheet: Locustella major. Downloaded from http://www.birdlife.org on 18/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/08/2022.