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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 |
|---|---|
| 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 | Extinct | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|
| Bangladesh | Native | No | |||
| Cambodia | Native | No | |||
| India | Native | No | |||
| Laos | Native | No | |||
| Malaysia | Native | Yes | Yes | ||
| Myanmar | Native | No | |||
| Nepal | Native | No | |||
| Thailand | Native | Yes | |||
| Vietnam | Native | possibly |
Important Bird Areas where this species has triggered the IBA criteria
| Country/Territory | IBA Name | IBA link |
|---|---|---|
| Cambodia | Chhep |  |
| Cambodia | Lomphat | |
| Cambodia | Mondulkiri / Kratie Lowlands | |
| Cambodia | Upper Srepok Catchment | |
| Cambodia | Western Siem Pang | |
| India | Amchang Hills | |
| India | Asan Barrage | |
| India | Bherjan - Borajan - Podumoni Wildlife Sanctuary | |
| India | Bordoloni - Sampora | |
| India | Buxa Tiger Reserve (National Park) | |
| India | Chakrashila Complex | |
| India | Corbett Tiger Reserve | |
| India | Dhansiri Reserve Forest | |
| India | Dibang Reserve Forest and adjacent areas | |
| India | Dibru - Saikhowa Complex | |
| India | Dipor Beel Bird Sanctuary | |
| India | Dudhwa National Park | |
| India | Dum Duma-Dangori - Kumsong Reserve Forests | |
| India | East and North Karbi Anglong Wildlife Sanctuaries | |
| India | Fambong Lho Wildlife Sanctuary - Himalayan Zoological Park - Ratey Chu Reserve Forest | |
| India | Gibbon (Hollongapar) Sanctuary | |
| India | Gobind Sagar and Naina Devi Wildlife Sanctuary | |
| India | Harike Lake Bird Sanctuary | |
| India | Inner Line, Kathakal and Barak Reserve Forests | |
| India | Jamjing and Sengajan | |
| India | Jhanjimukh - Kokilamukh | |
| India | Kalesar Wildlife Sanctuary | |
| India | Kaziranga National Park | |
| India | Kuarbari_Dalani | |
| India | Laokhowa and Burhachapori Sanctuaries | |
| India | Lowland forests of South Sikkim (Melli-Baguwa-Kitam, Jorethang-Namchi, Sombarey) | |
| India | Lumding - Marat Longri | |
| India | Mahananda Wildlife Sanctuary | |
| India | Majuli | |
| India | Manas National Park | |
| India | Nameri National Park | |
| India | Nokrek National Park | |
| India | Nongkhyllem Wildlife Sanctuary | |
| India | Orang National Park | |
| India | Pabho Reserve Forest | |
| India | Pabitora Wildlife Sanctuary | |
| India | Pani-Dihing Bird Sanctuary | |
| India | Pong Dam Lake Wildlife Sanctuary | |
| India | Rajaji National Park | |
| India | Ramnagar Wildlife Sanctuary | |
| India | Ripu and Chirang Reserve Forest | |
| India | Sarah Valley, Lower Dharamshala | |
| India | Sibsagar Tanks | |
| India | Son Beel | |
| India | Sonai-Rupai Wildlife Sanctuary | |
| India | Sonanadi Wildlife Sanctuary | |
| India | Subansiri | |
| India | Tamaranga - Dalani - Bhairab Complex | |
| India | The Chapories of Lohit Reserve | |
| India | Tirap - Burhidihing | |
| India | Upper Dihing (East) Complex | |
| India | Upper Dihing (West) Complex | |
| India | Urpod Beel | |
| Laos | Siphandon | |
| Laos | Xe Pian | |
| Myanmar | Kamaing | |
| Myanmar | Nam San Valley | |
| Nepal | Annapurna Conservation Area | |
| Nepal | Barandabhar forests and wetlands | |
| Nepal | Bardia National Park | |
| Nepal | Chitwan National Park | |
| Nepal | Dang Deukhuri foothill forests and west Rapti wetlands | |
| Nepal | Dharan forests | |
| Nepal | Farmlands in Lumbini area | |
| Nepal | Ghodaghodi Lake | |
| Nepal | Jagdishpur Reservoir | |
| Nepal | Koshi Tappu Wildlife Reserve and Koshi Barrage | |
| Nepal | Mai Valley forests | |
| Nepal | Nawalparasi forests | |
| Nepal | Parsa Wildlife Reserve | |
| Nepal | Rampur valley | |
| Nepal | Sukla Phanta Wildlife Reserve | |
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 | Fishing & harvesting aquatic resources / Persecution/control | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Decline | Low Impact: 5 | ||||||
| |||||||||
| Natural system modifications | Other ecosystem modifications | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Decline | Medium Impact: | ||||||
| |||||||||
| Invasive non-native/alien species/diseases | Problematic native species/diseases | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Negligible declines | Low Impact: 5 | ||||||
| |||||||||
| Pollution | Agricultural & forestry effluents / Type Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Very Rapid Declines | High Impact: 8 | ||||||
| |||||||||
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 (2013) Species factsheet: Gyps tenuirostris. Downloaded from
http://www.birdlife.org on 23/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 23/05/2013.
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 | |
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