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Slender-billed Vulture Gyps tenuirostris

IUCN Red List Criteria

Critically Endangered A2ce+4ce 
Endangered A2ce+4ce 
Vulnerable A2ce+4ce 

IUCN Red List history

Year Category
2013 Critically Endangered
2012 Critically Endangered
2010 Critically Endangered
2009 Critically Endangered
2008 Critically Endangered
2004 Critically Endangered
2002 Critically Endangered
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised

Species attributes

Migratory status not a migrant Forest dependency Low
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 847,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1000-2499 poor Estimated 2007
Population trend Decreasing medium -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 16 - - -
Population justification: Considerable confusion over the taxonomy and identification of Gyps vultures has occurred, making it difficult to be sure of the population size. It is considered likely to number 1,000-2,499 mature individuals, equating to 1,500-3,750 individuals in total.
Trend justification: This species declined across South-East Asia during the 20th century probably as a result of the collapse of wild ungulate populations and, to some degree, persecution. Since the mid-1990s, declines have been noted in three species of Gyps vulture across the Indian Subcontinent, including this species. These declines are driven by high adult mortality as a result of residues of the anti-inflammatory drug diclofenac used to treat domestic livestock. An extremely rapid decline is estimated to have occurred over the last three generations.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
Bangladesh Native Extant      
Cambodia Native Extant      
India Native Extant      
Laos Native Extant      
Malaysia Native Extinct   Yes  
Myanmar Native Extant      
Nepal Native Extant      
Thailand Native Extinct      
Vietnam Native Possibly Extinct      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Cambodia Chhep site factsheet
Cambodia Lomphat site factsheet
Cambodia Mondulkiri - Kratie Lowlands site factsheet
Cambodia Upper Srepok Catchment site factsheet
Cambodia Western Siem Pang site factsheet
India Amchang Hills site factsheet
India Asan Barrage site factsheet
India Bherjan-Borajan-Podumoni Wildlife Sanctuary site factsheet
India Bordoloni - Sampora site factsheet
India Buxa Tiger Reserve (National Park) site factsheet
India Chakrashila Complex site factsheet
India Corbett Tiger Reserve site factsheet
India Deepor Beel Bird Sanctuary site factsheet
India Dhansiri Reserve Forest site factsheet
India Dibang Reserve Forest and adjacent areas site factsheet
India Dibru - Saikhowa Complex site factsheet
India Dudhwa National Park site factsheet
India Dum Duma, Dangori and Kumsong Reserve Forests site factsheet
India East and North Karbi Anglong Wildlife Sanctuaries site factsheet
India Fambong Lho Wildlife Sanctuary - Himalayan Zoological Park - Ratey Chu Reserve Forest site factsheet
India Gibbon (Hollongapar) Sanctuary site factsheet
India Gobind Sagar and Naina Devi Wildlife Sanctuaries site factsheet
India Harike Lake Bird Sanctuary site factsheet
India Innerline, Katakal and Barak Reserve Forests site factsheet
India Jamjing and Sengajan site factsheet
India Jhanjimukh - Kokilamukh site factsheet
India Kalesar Wildlife Sanctuary site factsheet
India Kaziranga National Park site factsheet
India Kuarbari Dalani site factsheet
India Laokhowa and Burhachapori Sanctuaries site factsheet
India Lowland forests of South Sikkim (Melli-Baguwa-Kitam, Jorethang-Namchi, Sombarey) site factsheet
India Lumding - Marat Longri site factsheet
India Mahananda Wildlife Sanctuary site factsheet
India Majuli site factsheet
India Manas National Park site factsheet
India Nameri National Park site factsheet
India Nokrek National Park site factsheet
India Nongkhyllem Wildlife Sanctuary site factsheet
India Orang National Park site factsheet
India Pabho Reserve Forest site factsheet
India Pabitora Wildlife Sanctuary site factsheet
India Pani-Dihing Bird Sanctuary site factsheet
India Pong Dam Lake Wildlife Sanctuary site factsheet
India Rajaji National Park site factsheet
India Ramnagar Wildlife Sanctuary site factsheet
India Ripu and Chirang Reserve Forests site factsheet
India Sarah Valley, Lower Dharamshala site factsheet
India Sibsagar Tanks site factsheet
India Son Beel site factsheet
India Sonai-Rupai Wildlife Sanctuary site factsheet
India Sonanadi Wildlife Sanctuary site factsheet
India Subansiri site factsheet
India Tamaranga - Dalani - Bhairab Complex site factsheet
India The Chapories of Lohit Reserve site factsheet
India Tirap - Burhidihing site factsheet
India Upper Dihing (East) Complex site factsheet
India Upper Dihing (West) Complex site factsheet
India Urpod Beel site factsheet
Laos Siphandon site factsheet
Laos Xe Khampho / Xe Pian site factsheet
Laos Xe Kong Plains site factsheet
Myanmar Kamaing site factsheet
Myanmar Nam San Valley site factsheet
Nepal Annapurna Conservation Area site factsheet
Nepal Barandabhar forests and wetlands site factsheet
Nepal Bardia National Park site factsheet
Nepal Chitwan National Park site factsheet
Nepal Dang Deukhuri foothill forests and west Rapti wetlands site factsheet
Nepal Dharan forests site factsheet
Nepal Farmlands in Lumbini area site factsheet
Nepal Ghodaghodi Lake site factsheet
Nepal Jagdishpur Reservoir site factsheet
Nepal Koshi Tappu Wildlife Reserve and Koshi Barrage site factsheet
Nepal Mai Valley forests site factsheet
Nepal Nawalparasi forests site factsheet
Nepal Parsa Wildlife Reserve site factsheet
Nepal Rampur valley site factsheet
Nepal Sukla Phanta Wildlife Reserve site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Urban Areas suitable resident
Forest Subtropical/Tropical Dry suitable resident
Grassland Subtropical/Tropical Dry suitable resident
Savanna Dry suitable resident
Shrubland Subtropical/Tropical Dry suitable resident
Altitude 0 - 2000 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Hunting & trapping terrestrial animals / Persecution/control Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Majority (50-90%) Negligible declines Low Impact: 5
Stresses
Species mortality
Natural system modifications Other ecosystem modifications Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact:
Stresses
Ecosystem degradation
Pollution Agricultural & forestry effluents / Type Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Majority (50-90%) Very Rapid Declines High Impact: 8
Stresses
Species mortality

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Pets Whole Adults and juveniles Wild International Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Gyps tenuirostris. Downloaded from http://www.birdlife.org on 24/04/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/04/2014.

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 Critically Endangered
Family Accipitridae (Osprey, kites, hawks and eagles)
Species name author Gray, 1844
Population size 1000-2499 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 847,000 km2
Country endemic? No
Links to further information
- Summary information on this species