Gods of Scavenging: Vultures of the Indian subcontinent
Photo StoryPublished : Feb 20, 2023Updated : Sep 30, 2023
Nature’s most efficient scavengers once numbered in the millions. Now, four of the nine species found in India are critically endangered and face the risk of extinction
Text by: Abhishek Ghoshal
Nature’s most efficient scavengers once numbered in the millions. Now, four of the nine species found in India are critically endangered and face the risk of extinction
Until the early 1990s, there were millions of vultures in India. In the garbage dumps of our metro cities, semi-urban and rural areas, vultures were commonly seen performing their duty of foraging on carcasses of domestic and wild animals. Culturally and spiritually, in India, vultures have a prestigious stature. In the Ramayana, the legendary Jatayu gave up his life while fighting with Ravana to save Sita from abduction. Many communities, such as Parsis and Bon Buddhists, practice sky-burial for the deceased and consider vultures the spirit connecting life and the afterlife.
The long, unfeathered neck of the vulture is an adaptation to forage deep inside the body cavity. By scavenging carcasses clean, vultures render ecosystem services, keeping neighbourhoods and environments free from rotting bodies, rats, dogs, and related diseases. According to a paper published in Ecological Economics (2013), their services are worth billions of dollars annually.
Since the mid-1990s, veterinary use of the non-steroidal anti-inflammatory drug (NSAID) diclofenac disrupted vulture populations, which crashed across the subcontinent due to mass mortality from visceral gout and renal failure. Populations of four out of the nine vulture species (white-rumped Gyps bengalensis, long-billed Gyps indicus, slender-billed Gyps tenuirostris, and red-headed Sarcogyps calvus) plummeted up to 99.9 per cent. While we don’t have population figures for most of the vulture species in India today, we have estimated numbers for the white-rumped (6,000), long-billed (30,000), and slender-billed vultures (1,200).
To firefight the ecological crisis, the Government of India launched a vulture captive breeding programme, established vulture-safe zones, and banned the veterinary use of diclofenac in 2006 with technical support from the Bombay Natural History Society and Central Zoo Authority. However, currently, at least 14 other veterinary NSAIDs are in use. Of these, three drugs — aceclofenac, nimesulide, and ketoprofen — are proven vulture-toxic drugs, while meloxicam and tolfenamic acid are vulture-safe drugs. The toxicity of the rest of the drugs is under assessment.
Meanwhile, the vulture population decline across the country seems to have stabilised. The stabilisation has come about only at extremely low levels. Although there are vulture conservation breeding programmes at Pinjore, Bhopal, Rajabhatkhawa, Rani (Guwahati), Junagarh, and Hyderabad, where vultures have been successfully bred in captivity, there is hardly any evidence of population recovery yet. These small populations continue to grapple with illegal veterinary use of diclofenac and vulture-toxic drugs. The vultures of India need food free from toxic veterinary drugs. Are the veterinary drug regulatory authorities listening?
With inputs from Mr Sachin Ranade, Centre Manager, Vulture Conservation Breeding Centre (VCBC)-Rani & Assistant Director, BNHS; Mr Soumya Chakravorty, Centre Manager, VCBC-Rajabhatkhawa, BNHS; and Dr Rohan Shringarpure, Centre Manager, VCBC-Bhopal, BNHS.
About the contributor
Abhishek Ghoshal
is a wildlife biologist. He heads the Human-Wildlife Conflict Mitigation Division at Wildlife Trust of India (WTI).