Thai National Parks

Birds of Thailand

Species of Thailand

Indian vulture

Binomial name: Gyps indicus, Giovanni Antonio Scopoli, 1786

The Indian vulture (Gyps indicus) is an Old World vulture and is closely related to the griffon vulture, G. fulvus. It breeds mainly on hilly crags in central and peninsular India. The birds in the northern part of its range once considered a subspecies are now considered a separate species, the slender-billed vulture Gyps tenuirostris. These were lumped together under the name long-billed vulture.

Description

The long-billed vulture is a typical vulture, with a bald head, very broad wings and short tail feathers. It is smaller and less heavily built than the Eurasian Griffon, usually weighing between 5.5 and 6.3 kg (12–13.9 lbs) and measuring 80 – 103 cm long and 1.96 to 2.38 m across the wings. It is distinguished from that species by its less buff body and wing coverts. It also lacks the whitish median covert bar shown by Griffon.

Behaviour

The species breeds mainly on cliffs, but is known to use trees to nest in Rajasthan. Like other vultures it is a scavenger, feeding mostly from carcasses of dead animals which it finds by soaring over savannah and around human habitation. They often move in flocks.

Population declines

The Indian vulture and the white-rumped vulture, G. bengalensis species have suffered a 99%–97% population decrease in Bangladesh, Pakistan and India. Between 2000-2007 annual decline rates of this species and the slender-billed vulture averaged over sixteen percent. The cause of this has been identified as poisoning caused by the veterinary drug diclofenac. Diclofenac is a non-steroidal anti-inflammatory drug (NSAID) and when given to working animals it can reduce joint pain and so keep them working for longer. The drug is believed to be swallowed by vultures with the flesh of dead cattle who were given diclofenac in the last days of life.

Diclofenac causes kidney failure in several species of vultures. In March 2006 the Indian Government announced its support for a ban on the veterinary use of diclofenac. Another NSAID, meloxicam, has been found to be harmless to vultures and should prove to be an acceptable substitute for diclofenac. When meloxicam production is increased it is hoped that it will be as cheap as diclofenac. As of August 2011 the ban for veterinary use for approximately a year did not prevent diclofenac use across India. Small numbers of birds have bred across peninsular India, in Karnataka and Tamil Nadu.

Captive-breeding programmes

Captive-breeding programmes for several species of Indian vulture have been started. The vultures are long lived and slow in breeding, so the programmes are expected to take decades. Vultures reach breeding age at about five years old. It is hoped that captive-bred birds will be released to the wild when the environment is clear of diclofenac.

In early 2014 the Saving Asia’s Vultures from Extinction (Save) programme announced that it expects to start releasing captive-bred birds into the wild by 2016.

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Scientific classification

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Accipitriformes
Family
Accipitridae
Genus
Gyps
Species
Gyps indicus

Synonyms

  • Gyps indicus indicus

Conservation status

Critically Endangered (IUCN3.1)

Critically Endangered (IUCN3.1)