VU
Broad-tailed Grassbird Schoenicola platyurus



Taxonomy

Taxonomic note

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.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - B1ab(i,ii,iii,iv,v); C2a(i)

Red List history
Year Category Criteria
2016 Vulnerable B1ab(i,ii,iii,iv,v);C2a(i)
2012 Vulnerable B1ab(i,ii,iii,iv,v);C2a(i)
2008 Vulnerable B1a+b(i,ii,iii,iv,v); C2a(i)
2004 Vulnerable
2000 Vulnerable
1994 Lower Risk/Near Threatened
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type Land-mass type - continent
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 192,000 medium
Number of locations 11-100 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 2500-9999 poor estimated 2000
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) 10-19 - - -
Decline (10 years/3 generation past and future) 10-19 - - -
Number of subpopulations 2-100 - - -
Largest subpopulations 1-89 - - -
Generation length (yrs) 3.6 - - -

Population justification: The population is estimated to number 2,500-9,999 mature individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 3,750-14,999 individuals, rounded here to 3,500-15,000 individuals.

Trend justification: A moderate and continuing negative population trend is suspected owing to the paucity of recent records, probably associated with continuing habitat disturbance.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
India N Extant Yes
Sri Lanka V Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
India Biligiri Rangaswamy Temple Wildlife Sanctuary and Hills
India Chimmony Wildlife Sanctuary
India Eravikulam National Park
India Grass Hills
India Indira Gandhi Wildlife Sanctuary and National Park
India INS - Shivaji and adjoining areas, Lonavla
India Kalakad-Mundanthurai Tiger Reserve
India Kemmangundi and Bababudan Hills
India Kottiyoor Reserve Forest
India Kudremukh National Park
India Mudumalai National Park
India Muthukuzhi
India Nelliyampathy (Nemmara Division)
India Peechi - Vazhani Wildlife Sanctuary
India Periyar Wildlife Sanctuary
India Silent Valley National Park
India Srivilliputhur Wildlife Sanctuary
India Talakaveri Wildlife Sanctuary
India Thattekkad Wildlife Sanctuary
India Tirunelveli Reserve Forest
India Wynaad Wildlife Sanctuary
India Zemithang - Nelya

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subtropical/Tropical High Altitude major resident
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable resident
Shrubland Subtropical/Tropical High Altitude major resident
Shrubland Subtropical/Tropical Moist suitable resident
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable resident
Altitude 700 - 2400 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation
Residential & commercial development Tourism & recreation areas Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2019) Species factsheet: Schoenicola platyurus. Downloaded from http://www.birdlife.org on 18/07/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/07/2019.