Slender-billed vulture

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Slender-billed vulture
Slender-billed Vulture, Mishmi Hills, India (cropped).jpg
Slender-billed Vulture in Arunachal Pradesh, India
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Accipitriformes
Family: Accipitridae
Genus: Gyps
Species:
G. tenuirostris
Binomial name
Gyps tenuirostris
GypsBengalensisMap.svg
Distribution in blue
Synonyms

Gyps indicus tenuirostris
Gyps indicus nudiceps [5] [6]

Contents

The slender-billed vulture (Gyps tenuirostris) is an Old World vulture species native to sub-Himalayan regions and Southeast Asia. It is Critically Endangered since 2002 as the population on the Indian subcontinent has declined rapidly. As of 2021, fewer than 870 mature individuals are thought to remain. [1]

It used to be the Indian vulture, under the name of “long-billed vulture”. However, these two species have non-overlapping distribution ranges and can be immediately told apart by trained observers, even at considerable distances. The Indian vulture is found only to the south of the Ganges and breeds on cliffs while the slender-billed vulture is found along and nests in trees.

Description

At 80 to 95 cm (31 to 37 in), in length, this mid-sized vulture is about the same size as its sister species, the Indian vulture. [7] This vulture is mostly grey with a pale rump and grey undertail coverts. The thighs have whitish down. The neck is long, bare, skinny and black. The black head is angular and narrow with the dark bill appearing narrow midway. The ear opening is prominent and exposed. [8]

Distribution and habitat

The slender-billed vulture is found in India from the Gangetic plain north, west to Himachal Pradesh, south potentially as far as northern Odisha, and east through Assam. [9] It is also found in north and central Bangladesh, southern Nepal, Burma and Cambodia. [9]

Status and conservation

This species has suffered a marked decline in its numbers in recent years. The population of this species and the Indian vulture declined by 97% overall and in India annual decline rates for both species averaged over 16% between 2000–2007. Wild populations remain from northern and eastern India through southern Nepal and Bangladesh, with a small population in Burma. The only breeding colony in Southeast Asia is in the Steung Treng province of Cambodia. This colony is thought to number about 50–100 birds. The survival of the vultures in Cambodia may have been partly because diclofenac, which is poisonous to vultures, is not available there. The Royal Society for the Protection of Birds (RSPB) has placed the approximate number of slender-billed vultures living beyond confines at about 1,000 in 2009 and predictions estimate total extinction within the next decade amongst the wild population. [10] [11]

The slender-billed vulture is a protected species listed on the appendix II list of CITES, because its numbers have declined rapidly. Its decline is largely due to the use of the non-steroidal anti-inflammatory drug (NSAID) diclofenac in working farm animals. Diclofenac is poisonous to vultures, causing kidney failure, and is being replaced by meloxicam (another NSAID), which is not toxic to vultures. [12] The retail sale of Diclofenac is banned by law in India; however, Diclofenac is still acquired illegally and applied to livestock. [10]

Captive-breeding programs in India are aiming to conserve the species, and it is hoped that vultures can be released back in the wild when the environment is free of diclofenac. [10] Joint efforts between the RSPB and the Zoological Society of London resulted in the first successful captive breeding in 2009. [10] Two slender-billed vultures hatched and are being independently cared for in Haryana and West Bengal. [11] [12]

Related Research Articles

<span class="mw-page-title-main">Vulture</span> Common name for a type of bird

A vulture is a bird of prey that scavenges on carrion. There are 23 extant species of vulture. Old World vultures include 16 living species native to Europe, Africa, and Asia; New World vultures are restricted to North and South America and consist of seven identified species, all belonging to the Cathartidae family. A particular characteristic of many vultures is a bald, unfeathered head. This bare skin is thought to keep the head clean when feeding, and also plays an important role in thermoregulation.

<span class="mw-page-title-main">Old World vulture</span> Informal group of birds

Old World vultures are vultures that are found in the Old World, i.e. the continents of Europe, Asia and Africa, and which belong to the family Accipitridae, which also includes eagles, buzzards, kites, and hawks.

<span class="mw-page-title-main">Himalayan vulture</span> Species of bird

The Himalayan vulture or Himalayan griffon vulture is an Old World vulture native to the Himalayas and the adjoining Tibetan Plateau. It is one of the two largest Old World vultures and true raptors. It is listed as Near Threatened on the IUCN Red List. It is not to be confused with the Eurasian griffon vulture, which is a similar and sympatric species.

<span class="mw-page-title-main">White-rumped vulture</span> Species of bird

The white-rumped vulture is an Old World vulture native to South and Southeast Asia. It has been listed as Critically Endangered on the IUCN Red List since 2000, as the population severely declined. White-rumped vultures die of kidney failure caused by diclofenac poisoning. In the 1980s, the global population was estimated at several million individuals, and it was thought to be "the most abundant large bird of prey in the world". As of 2021, the global population was estimated at less than 6,000 mature individuals.

<span class="mw-page-title-main">Indian vulture</span> Species of vulture

The Indian vulture or long-billed vulture is a bird of prey native to the Indian subcontinent. It is an Old World vulture belonging to the family of Accipitridae. It is a medium-sized vulture with a small, semi-bald head with little feathers, long beak, and wide dark colored wings. It breeds mainly on small cliffs and hilly crags in central and peninsular India.

<span class="mw-page-title-main">White-backed vulture</span> Species of bird

The white-backed vulture is an Old World vulture in the family Accipitridae, which also includes eagles, kites, buzzards and hawks. It is the most common vulture species in the continent of Africa.

<span class="mw-page-title-main">Diclofenac</span> Nonsteroidal anti-inflammatory drug


Diclofenac, sold under the brand name Voltaren, among others, is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain and inflammatory diseases such as gout. It is taken by mouth or rectally in a suppository, used by injection, or applied to the skin. Improvements in pain last for as much as eight hours. It is also available in combination with misoprostol in an effort to decrease stomach problems.

<span class="mw-page-title-main">Slender-billed curlew</span> Species of bird

The slender-billed curlew is a bird in the wader family Scolopacidae. Isotope analysis suggests the majority of the former population bred in the Kazakh Steppe despite a record from the Siberian swamps, and was migratory, formerly wintering in shallow freshwater habitats around the Mediterranean. This species has occurred as a vagrant in western Europe, the Canary Islands, the Azores, Oman, Canada, and Japan. The slender-billed curlew was always a rare species and is feared extinct, with the last verifiable sighting being in 2004.

<span class="mw-page-title-main">Cape vulture</span> Species of bird

The Cape vulture, also known as Cape griffon and Kolbe's vulture, is an Old World vulture in the family Accipitridae. It is endemic to southern Africa, and lives mainly in South Africa, Lesotho, Botswana, and in some parts of northern Namibia. It nests on cliffs and lays one egg per year. In 2015, it had been classified as Endangered on the IUCN Red List, but was down-listed to Vulnerable in 2021 as some populations increased and have been stable since about 2016.

<span class="mw-page-title-main">Chitwan National Park</span> National park in Nepal

Chitwan National Park is the first national park of Nepal. It was established in 1973 as the Royal Chitwan National Park and was granted the status of a World Heritage Site in 1984. It covers an area of 952.63 km2 (367.81 sq mi) in the subtropical Inner Terai lowlands of south-central Nepal in Nawalpur, Chitwan, Makwanpur and Parsa Districts. It ranges in elevation from about 100 m (330 ft) in the river valleys to 815 m (2,674 ft) in the Sivalik Hills.

<span class="mw-page-title-main">Red-headed vulture</span> Species of bird

The red-headed vulture, also known as the Asian king vulture, Indian black vulture or Pondicherry vulture, is an Old World vulture mainly found in the Indian subcontinent, with small disjunct populations in some parts of Southeast Asia.

<span class="mw-page-title-main">White-headed vulture</span> Species of bird

The white-headed vulture is an Old World vulture endemic to Africa. Populations have been declining steeply in recent years due to habitat degradation and poisoning of vultures at carcasses. An extinct relative was also present in the Indonesian island of Flores during the Late Pleistocene, indicating that the genus was more widespread in the past.

Kaziranga National Park is an Indian national park and a World Heritage Site in Golaghat and Nagaon districts of Assam, India. It is refuge for the world's largest population of great one-horned rhinoceros. Kaziranga has the highest density of tigers among protected areas in the world and was declared a Tiger Reserve in 2006. The park has large breeding populations of elephant, wild Asiatic water buffalo and swamp deer. Kaziranga is recognized as an Important Bird Area by Birdlife International for conservation of avifaunal species. The park has achieved notable progress in wildlife conservation with respect to other protected areas in India.Kaziranga was declared a Tiger Reserve in 2006

The Peregrine Fund is a non-profit organization founded in 1970 that conserves threatened and endangered birds of prey worldwide. The successful recovery of the peregrine falcon in the United States, which was removed from the U.S. Endangered Species List in 1999, enabled the organization to expand its mission to include other endangered raptors around the world. The Peregrine Fund is headquartered at its World Center for Birds of Prey in Boise, Idaho, on a 580-acre (2.3 km2) campus with breeding and research facilities, an administrative office, interpretive center, research library, and archives.

<span class="mw-page-title-main">Jagdishpur Reservoir</span> Reservoir in Kapilvastu District, Nepal

The Jagdishpur Reservoir is a reservoir in Jahadi Village Development Committee, Kapilvastu District, Nepal which was named after Er. Jagadish Jha who designed and supervised the construction of Banaganga dam. With a surface area of 225 ha (2.25 km2), it is the largest reservoir in the country and an important wetland site. It is situated at an altitude of 197 m (646 ft). The maximum water depth varies between 2 m (6.6 ft) in the dry season and 7 m (23 ft) in the monsoon season.

<span class="mw-page-title-main">Indian vulture crisis</span> Ecological crisis in Indian subcontinent

Nine species of vulture can be found living in India, but most are now in danger of extinction after a rapid and major population collapse in recent decades. In the early 1980s, three species of Gyps vultures had a combined estimated population of 40 million in South Asia, while in 2017 the total population numbered only 19,000.

<span class="mw-page-title-main">Jatayu Conservation Breeding Centre, Pinjore</span> Critically Endangered Bird Breeding Centre in Haryana, India

The Jatayu and Sparrow Conservation Breeding Centre (JCBC), is the world's largest facility for the breeding and conservation of Indian vultures and the house sparrow. It is located within the Bir Shikargah Wildlife Sanctuary in the town of Pinjore in the State of Haryana, India. It is run by the Haryana Forests Department and Bombay Natural History Society with the help of British nature conservation charity Royal Society for the Protection of Birds. It is 8 kilometres (5.0 mi) from Pinjore and covers 5 acres (2.0 ha).

A vulture restaurant is a site where carrion, decaying flesh from dead animals, is deposited in order to be consumed by vultures, and is sometimes referred to more generally as supplemental feeding or provisioning. These stations can also be referred to as vulture feeding sites, vulture feeding stations, and vulture safe zones. This supplemental feeding practice is used to provide vultures with reliable, non-contaminated food sources or to aid in monitoring schemes. Vulture restaurants have been instituted as a method of vulture conservation in Europe and Africa since the 1960's and 70's, when vulture populations began to decline. This strategy is used because often population declines are attributed to low food availability, food contamination or insufficient nutritional quality, or feeding from human areas leading to conflict. Notably, large vulture population declines in South Asia, referred to as the Asian or Indian vulture crisis, and Africa, referred to as the African vulture crisis, have brought renewed attention to the uses and impacts of vulture restaurants. Vulture restaurants are used in Asia, Africa, Europe, and North America for various conservation and management plans. They can help combat food-derived threats to vultures, such as diclofenac or lead contamination or conflict with ranchers and poachers. The first vulture restaurant was built in South Africa in 1966. Vulture restaurants operate in a number of countries, including Nepal, India, Cambodia, South Africa, Eswatini, and Spain.

Debbie Pain is a conservation biologist and ecotoxicologist working on endangered birds around the world. Since 1988 she has led projects into reversing the decline in several species through research, practical and policy measures at the Royal Society for the Protection of Birds and Wildlife and Wetlands Trust.

Jatayu vulture restaurant is the first community managed vulture restaurant in the world. It is located in Pithauli of Nawalparasi district in Nepal in the buffer zone of Chitwan National Park. It was established in 2006. It provides safe food to vulture. The facility attracts tourists and conservationists from around the world. The vultures fed at this place has been tracked to have reached up to Pakistan.

References

  1. 1 2 BirdLife International (2021). "Gyps tenuirostris". IUCN Red List of Threatened Species . 2021: e.T22729460A204781113. Retrieved 11 May 2022.
  2. Gray, G.R. (1844). "Vulturinae, or Vultures". The genera of birds : comprising their generic characters, a notice of the habits of each genus, and an extensive list of species referred to their several genera. Vol. 1. London: Longman, Brown, Green, and Longmans. p. 5–6.
  3. Hume, A. O. (1878). "Gyps tenuirostris Hodgson". Stray Feathers. 7: 326.
  4. Deignan, H. G. (1946). "The correct names of three Asiatic birds" (PDF). Ibis. 88: 402–403. doi:10.1111/j.1474-919X.1946.tb03492.x.
  5. Baker, ECS (1927) Bull. Brit. Orn. Club 47:151
  6. Rand, A. L. & Fleming, R. L. (1957). "Birds from Nepal". Fieldiana: Zoology. 41 (1): 55.
  7. Vulture facts Archived 2011-08-11 at the Wayback Machine (2011).
  8. Rasmussen, PC & JC Anderton (2005). Birds of South Asia: The Ripley Guide. Volume 2. Smithsonian Institution & Lynx Edicions. p. 90.
  9. 1 2 Rare Birds Yearbook 2008. England: MagDig Media Lmtd. 2007. pp. 124–125. ISBN   978-0-9552607-3-5.
  10. 1 2 3 4 Alleyne, R. (2009). "Endangered vulture could be saved thanks to help from RSPB". Telegraph. Archived from the original on 2009-08-10. Retrieved 2009-08-06.
  11. 1 2 "Indian vulture births are hailed". BBC News. 2009-08-06. Retrieved 2009-08-06.
  12. 1 2 Press Association (2009-08-06). "Boost for endangered vultures after captive breeding success". Guardian. Retrieved 2009-08-06.