Kamal Jung Kunwar explained that they have received between 30-40% of tourism revenue from the park for development projects in their villages.

BBC: Nepal's rhino hunters become the hunted

"The tough punishments have acted as a deterrent, " Mr Kunwar said.

BBC: Nepal's rhino hunters become the hunted

"That gives them a sense of ownership, " said Mr Kunwar, whose book Four Years for the Rhino details the meticulous planning that has gone into the conservation project.

BBC: Nepal's rhino hunters become the hunted