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Slender-billed Babbler Turdoides longirostris

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable A2c+3c+4c 

IUCN Red List history

Year Category
2012 Vulnerable
2008 Vulnerable
2004 Vulnerable
2000 Vulnerable
1994 Lower Risk/Near Threatened
1988 Near Threatened

Species attributes

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

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 20,500 medium
Number of locations 11-100 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1500-7000 poor Estimated 2000
Population trend Decreasing poor -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 8.8 - - -
Population justification: The population is estimated to number 2,500-9,999 individuals, based on a detailed analysis of historical and recent records in BirdLife International (2001). The largest remaining population, in Chitwan National Park, is estimated to number 1,000 individuals, but there have been few recent surveys elsewhere in its range. 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. The estimate equates to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.
Trend justification: Recent information on population trends is lacking, but on-going habitat loss and degradation across the species's range suggest that a rapid population decline is likely to be continuing.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Bangladesh Native Extant       Yes
India Native Extant       Yes
Myanmar Native Extant        
Nepal Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
India Kaziranga National Park site factsheet
India Lowland forests of South Sikkim (Melli-Baguwa-Kitam, Jorethang-Namchi, Sombarey) site factsheet
India Manas National Park site factsheet
India Nameri National Park site factsheet
India Pangolakha Wildlife Sanctuary - Zuluk - Bedang Tso - Natula Complex site factsheet
Nepal Chitwan National Park site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subtropical/Tropical Seasonally Wet/Flooded major resident
Altitude 0 - 1200 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Agro-industry grazing, ranching or farming Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact: 6
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 Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations / Scale Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Gathering terrestrial plants / Unintentional effects (species is not the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Unspecified species Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation
Natural system modifications Dams & water management/use / Dams (size unknown) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Fire & fire suppression / Trend Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Natural system modifications Other ecosystem modifications Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2014) Species factsheet: Turdoides longirostris. Downloaded from http://www.birdlife.org on 20/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/08/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Vulnerable
Family Timaliidae (Babblers and parrotbills)
Species name author (Moore, 1854)
Population size 1500-7000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 20,500 km2
Country endemic? No
Links to further information
- Summary information on this species