Sarcogyps calvus occurs in Pakistan, Nepal, India, Bhutan, Myanmar, China, Thailand, Laos, Viet Nam, Cambodia, peninsular Malaysia and Singapore. This species has suffered an extremely rapid population reduction in the recent past which is likely to continue into the near future, probably largely as a result of feeding on carcasses of animals treated with the veterinary drug diclofenac, perhaps in combination with other causes. For this reason it is classified as Critically Endangered.
Factsheet: Red-headed Vulture Sarcogyps calvus