Sumatran tiger cubs caught by camera trap in Rimbang Baling-Bukit Tigapuluh Corridor, Riau, Indonesia.[WWF]

A hidden video of World Wildlife Fund (WWF) Indonesia has recorded a female tiger and its two cubs in the jungle in the central part of Sumatra, the Jakarta Post reported on Thursday.

It is the first tiger family WWF Indonesia researchers have discovered ever, due to video recordings conducted last month.

Four video equipment have been placed in the Rimbang Baling conservatory and the Bukit Tigapuluh National Park, located in Riau and Jambi. "Obtaining a video recording of a tiger family within a month after we started operating the device has given us a morale boost," coordinator of the WWF-Indonesia research, Karmila Parakkasi quoted by the Jakarta post as saying.

The video trap also recorded the presence of a male Sumatran tiger and its usual prey such as wild boars, reindeers, anteaters and long-tailed monkeys.

The coordinator, however, expressed fear about the survival of the tiger population due to the presence of two giant pulp, paper and palm oil producers near the animal's habitat, not to mention rampant illegal logging. She estimated the number of Sumatran tigers in the wild at 400.