A young girl herds a small group of cows and goats in the Shivalik hills of northern India. As she passes under a grove of tall pines, a downy head with a huge beak pokes out from a tree and watches intently. This is a white-backed vulture. Before the girl was born, there were tens of millions of this species of vulture in India. But in less than 10 years, the white-backed vulture has declined by 99,7%.