Red-headed vulture

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Red-headed vulture
Red-headed Vulture Adult Male Bandhavgrah National Park 16042013.jpg
Male in Bandhavgarh National Park, India
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Class: Aves
Order: Accipitriformes
Family: Accipitridae
Genus: Sarcogyps
Lesson, 1842
Species:
S. calvus
Binomial name
Sarcogyps calvus
(Scopoli, 1786)
Sarcogyps calvus Verbreitung.png
Current distribution range of red headed vulture
Synonyms
  • Aegypius calvus
  • Torgos calvus

The red-headed vulture (Sarcogyps calvus), also known as the Asian king vulture, Indian black vulture or Pondicherry vulture, [2] is an Old World vulture mainly found in the Indian subcontinent, with small disjunct populations in some parts of Southeast Asia.

Contents

Description

It is a medium-sized vulture of 76 to 86 cm (30 to 34 in) in length, weighing 3.5–6.3 kg (7.7–13.9 lb) and having a wingspan of about 1.99–2.6 m (6.5–8.5 ft). [3] [4] It has a prominent naked head: deep-red to orange in the adult, paler red in the juvenile. It has a black body with pale grey band at the base of the flight feathers. The sexes differ in colour of the iris: males have a paler, whitish iris, whilst in females it is dark brown. [5]

Red headed vulture female at Ranthambore Red headed vulture.JPG
Red headed vulture female at Ranthambore

The red-headed vulture is very similar in appearance to its larger relative the Lappet-faced vulture in Africa and Arabia, even being historically placed in the genus Torgos [6]

Red head vulture3.png
Lappet-faced vulture.jpg
A female red-headed vulture (left) and a Lappet-faced vulture (right). Both have similar anatomical features including skull shapes and the dangling skin lappets. They are believed to be closely related

Taxonomy and systematics

This is a species of Old World vulture found in the Indian subcontinent. It has no subspecies.

Distribution and habitat

This gaudy-faced vulture was historically abundant, range widely across the Indian subcontinent, and also eastwards to south-central and south-eastern Asia, extending from India to Singapore. Today the range of the red-headed vulture is localized primarily to northern India. It is usually in open country and in cultivated and semi-desert areas. It is also found in deciduous forests and foothills and river valleys. It is usually found up to an altitude of 3000m from sea level. [7]

Conservation status

The red-headed vulture used to be declining, but only slowly; in 2004 the species was uplisted to near threatened from least concern by the IUCN. The widespread use of the NSAID diclofenac in veterinary medicine in India has caused its population to collapse in recent years, however. Diclofenac is a compound now known to be extremely poisonous to vultures. The red-headed vulture population has essentially halved every other year since the late 1990s, and what once was a plentiful species numbering in the hundreds of thousands has come dangerously close to extinction in less than two decades. Consequently, it was uplisted to critically endangered in the 2007 IUCN Red List. [1]

Several NSAIDs have been found to be harmful to scavenging birds. Diclofenac, carprofen, flunixin, ibuprofen and phenylbutazone were associated with mortality. Meloxicam has thus far been found to be "Vulture-Safe" and its use in veterinary treatment of livestock is being encouraged. [8] [9]

The red-headed vulture has become increasingly difficult to find due to hunting. In places like Cambodia, special programs have been implemented to support critically endangered vulture species. Evidence has shown that hunters have started using poisons in their hunting practices. [10] Population analysis indicates that since 2010, populations of the White-rumped Vulture (Gyps bengalensis) and Red-headed Vulture (Sarcogyps calvus) have declined, while the Slender-billed Vulture (Gyps tenuirostris) may have also begun to decline since 2013. [10]

In an assessment made in 2021 assessed there are 2500-9999 mature individuals in the wild. [1]

Threats

Pharmaceutical Toxins and Diclofenac

A significant factor in the rapid decline of Red-headed Vulture populations since the 21st century is the pharmaceutical NSAID diclofenac, used to treat livestock. This substance has proven highly toxic to vultures, leading to mortality from renal failure and visceral gout. Recent findings indicate that Red-headed Vulture populations in India have shown signs of recovery following a ban on diclofenac, suggesting the drug's adverse effects on the species. [1]

Human Activities

Incidental mortality occurs in Cambodia due to the widespread use of poisons for catching fish or waterbirds at trapeangs (waterholes). Intentional poisoning for belief-based use has also been reported in Cambodia. Additionally, the logging of nesting trees, electrocution, and collisions with powerlines are potential threats to the species. [1]

Competition Among Vulture Species

In the shared ecosystem, dominant vulture species like Gyps vultures have a competitive advantage in scavenging on carcasses. They typically outcompete the Red-headed Vulture for access to food resources, which can lead to food scarcity for the species. As a result, the Red-headed Vulture may have limited access to suitable feeding opportunities, potentially affecting its survival and contributing to its population decline. [1]

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.

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

The hooded vulture is an Old World vulture in the order Accipitriformes, which also includes eagles, kites, buzzards and hawks. It is the only member of the genus Necrosyrtes, which is sister to the larger Gyps genus, both of which are a part of the Aegypiinae subfamily of Old World vultures. It is native to sub-Saharan Africa, where it has a widespread distribution with populations in southern, East and West Africa. It is a scruffy-looking, small vulture with dark brown plumage, a long thin bill, bare crown, face and fore-neck, and a downy nape and hind-neck. Its face is usually a light red colour. It typically scavenges on carcasses of wildlife and domestic animals. Although it remains a common species with a stable population in the lower region of Casamance, some areas of The Gambia, and Guinea-Bissau, other regions such as Dakar, Senegal, show more than 85% losses in population over the last 50 years. Threats include poisoning, hunting, loss of habitat and collisions with electricity infrastructure, and the International Union for Conservation of Nature has rated its conservation status as "critically endangered" in their latest assessment (2022). The highest current regional density of hooded vultures is in the western region of The Gambia.

<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">Cinereous vulture</span> Species of bird

The cinereous vulture is a large raptor in the family Accipitridae and distributed through much of temperate Eurasia. It is also known as the black vulture, monk vulture and Eurasian black vulture. With a body length of 1.2 m, 3.1 m (10 ft) across the wings and a maximum weight of 14 kg (31 lb), it is the largest Old World vulture and largest member of the Accipitridae family.

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

Rüppell's vulture, also called Rüppell's griffon vulture, named after Eduard Rüppell, is a large bird of prey, mainly native to the Sahel region and East Africa. The current population of 22,000 is decreasing due to loss of habitat, incidental poisoning, and other factors. Known also as Rüppell's griffon, Rueppell's griffon, Rüppell's griffin vulture, Rueppell's vulture and other variants, it is not to be confused with a different species, the griffon vulture. Rüppell's vulture is considered to be the highest-flying bird, with confirmed evidence of a flight at an altitude of 11,300 m (37,000 ft) above sea level.

<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">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">Slender-billed vulture</span> Species of bird

The slender-billed vulture 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.

<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.

<span class="mw-page-title-main">Kanwar Lake Bird Sanctuary</span> Freshwater oxbow lake in Bihar, India

The Kanwar Taal or Kabar Taal Lake or Kabartal Wetland located in Begusarai district of Bihar, India, is Asia's largest freshwater oxbow lake. It is approximately six times the size of the Bharatpur Sanctuary. In November 2020, the Ministry of Environment, Forest and Climate Change (MoEFCC) declared it the first Ramsar site in Bihar. There are a total of 75 Ramsar Sites in India till 2022.

<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.

References

  1. 1 2 3 4 5 6 BirdLife International (2021). "Sarcogyps calvus". IUCN Red List of Threatened Species . 2021: e.T22695254A205031246. Retrieved 30 August 2022.
  2. Ali, S. (1993). The Book of Indian Birds. Bombay: Bombay Natural History Society. ISBN   978-0-19-563731-1.
  3. WWF- Red-headed Vulture (2011).
  4. Raptors of the World by Ferguson-Lees, Christie, Franklin, Mead & Burton. Houghton Mifflin (2001), ISBN   0-618-12762-3
  5. Naoroji, Rishad (2006). Birds of Prey of the Indian subcontinent. pp. 282–287.
  6. "Vultures=29 September 2022". Researchgate.
  7. Ferguson-Lees, James; David A. Christie (2001-09-17). Raptors of the world. Houghton Mifflin Harcourt. pp. 443–444. ISBN   978-0-618-12762-7.
  8. Cuthbert, Richard; et al. (2007). "NSAIDs and scavenging birds: potential impacts beyond Asia's critically endangered vultures". Biology Letters. The Royal Society. 3 (1): 90–93. doi:10.1098/rsbl.2006.0554. PMC   2373805 . PMID   17443974 . Retrieved 11 May 2011.
  9. Milius, Susan (4 February 2006). [tp://www.sciencenews.org/view/generic/id/7025/title/Bird-Safe_Rx_Alternative_drug_wont_kill_Indias_svultures "Bird-Safe Rx: Alternative drug won't kill India's vultures"]. ScienceNews. 169 (#5): 70. Retrieved 11 May 2011.
  10. 1 2 Loveridge, Robin. “Poisoning Causing the Decline in South-East Asia’s Largest Vulture Population.” , 8 Mar. 2019, https://www.cambridge.org/core/journals/bird-conservation-international/article/poisoning-causing-the-decline-in-southeast-asias-largest-vulture-population