https://phys.org/news/2018-10-crouching-tigers-hidden-cameras-nepal.html

After a nine-year push to protect tigers, an exhaustive census across 2,700 kilometres (1,700 miles) of Nepal's lowlands completed earlier this year revealed the population has grown from 121 in 2009 to an estimated 235 adult cats today.

On the frontline of the painstaking survey were trained locals like Chaudhary in western Nepal's Bardia National Park where tiger numbers have grown nearly fivefold.