India has begun to use aerial drones in a national park in the eastern state of Assam to help protect the endangered one-horned rhino from poachers.
Kaziranga National Park is home to two-thirds of the world's one-horned rhino population, but many of them have been hunted down by poachers over the past year.
The local forestry minister says it's the first time drones, which are fitted with surveillance equipment, have been used to protect wildlife in India.
