India using drones to protect endangered rhinos
Remote controlled flying cameras, called drones, are now being used in India's Kaziranga National Park to try to protect endangered one-horned rhinos from poachers.
The park is home to two-thirds of the world's one-horned rhino population.
It's thought that 22 one-horned rhinos were killed there last year.
Officials at the park say the drones will help them keep an eye on the remotest parts of the reserve and deter potential threats.
Rhino horn is in great demand in China and south-east Asia, where it is believed to have medicinal properties.
Similar anti-poaching measures have been used in nearby Chitwan National Park in Nepal, where the hunting of one-horned rhinos has been drastically reduced.