This video says about itself:
28 March 2017
The tigers were found thanks to the efforts of Freeland and Panthera, two wildlife conservation groups working in conjunction with Thailand’s Department of National Parks, Wildlife and Plant Conservation.
These images and video, captured via camera trap and released on March 28, show not only adult tigers, but cubs. This is evidence of the “world’s second breeding Indochinese Tiger population…[and] the first evidence of a breeding population in Eastern Thailand in over 15 years” according to a press release issued by the organizations.
Only about 8 percent of tiger grounds have confirmed breeding populations, Panthera reported, and this discovery indicates that the tigers could potentially disperse and repopulate the surrounding countries of Cambodia and Laos.
Only 221 Indochinese Tigers are estimated to be alive in Thailand and Myanmar, according to the Freeland and Panthera press release. Thailand’s Huai Kha Khaeng Wildlife Sanctuary is the only other known breeding ground for the giant felines.
Translated from Dutch NOS TV:
For the first time in fifteen years wild tiger cubs have been seen in eastern Thailand. The tiger family was captured on camera in a national park. The new additions give the researchers hope for the future of the endangered species. …
The Thai government is working with organizations Freeland and Panthera to protect tigers. To investigate how many tigers live in the park 156 cameras with sensors were placed there. If they detected motion, then the cameras started and recorded images.
In 2010 “tiger nations” made the appointment that in 2022, the Chinese year of the tiger, tiger populations should have doubled. The number stood at 3200 and increased to 3900. “There have since been anti-poaching patrols deployed. Those eyes and ears in the field discourage poachers,” says [WWF conservationist] Hilbrink.