The Central Kalimantan Natural Resources Conservation Agency (BKSDA), together with the Bukit Baka Bukit Raya National Park Agency (TNBBBR) and the Borneo Orangutan Survival (BOS) Foundation have released ten more orangutans into Bukit Baka Bukit Raya National Park (TNBBBR). 

The release involved two groups of orangutans, with the first group departing for the Hiran watershed site on 14 June and the second group heading for the Bemban watershed site on 16 June.

The four orangutans travelling to the Hiran watershed were Aristo, Lalang, Svenja, and Noni Partono. The remaining six, who went to the Bemban watershed, were Yoko, Kejora, Syahrini, Susanne, Mama Edwan, and Edwina.

All ten orangutans had completed their rehabilitation and training for survival in the wild at the Nyaru Menteng Orangutan Rehabilitation Centre, although each had their own unique story and timeline. Lalang, for instance, came to the centre as one of the 47 orangutans who were repatriated from Thailand to Indonesia, in a major operation in 2006. After 17 years of rehabilitation at the centre, her transport cage was finally opened in front of a rasamala tree (Altingia excelsa), straight after Noni Partono’s transport cage.

Svenja and Yoko both came to the rehabilitation centre as very young orphans after being rescued at the same time in Kapuas Regency. Both graduated from the rehabilitation centre simultaneously, but have now been released in different locations, Svenja in the Hiran watershed and Yoko in the Bemban watershed. We hope they enjoy their new lives and true freedom in the forest.

The highlight of every trip – the cage opening.

Unlike Svenja and Yoko, who entered Forest School after being rescued and passing quarantine, Mama Edwan was directly relocated to Palas Pre-release Island when she arrived at the centre in 2007. As Mama Edwan was rescued as an adult, she had already lived successfully in the wild for many years and did not need to learn more survival skills. She could not be released right away due to severe damage to her left arm before her rescue, which required our team of veterinarians to amputate the entire limb. Despite this physically traumatic experience, she fully recovered and even went on to have a child, Edwina. When the door to her transport cage opened, Mama Edwan exited without hesitation and immediately started scoping out her new environment and reuniting with her daughter. On their first day exploring the forest, Janu, a male orangutan released in 2017, approached Mama Edwan, and the two showed interest in each other before going on to copulate.

Syahrini, meanwhile, did not arrive at the Nyaru Menteng Orangutan Rehabilitation Centre like the others, as she was born here ten years ago. Highly intelligent, Syahrini breezed through the rehabilitation process. Like her peers, Syahrini quickly moved out of her transport cage after it opened.

The release of these ten orangutans increases the number of reintroduced orangutans from Nyaru Menteng living in TNBBBR to 199 individuals. We are confident that these newcomers will do their part to help increase the orangutan population numbers in Central Kalimantan. 

Enjoy your freedom!


If you want to support our work, please consider adopting or donating. Thank you!


How Can You Help

There are lots of ways you can support orangutans and help ensure the survival of this precious ape.

Adopt an Orangutan

Adopt an Orangutan

Orangutans are endangered and at risk of extinction. Habitat destruction means hundreds of orphan orangutans need to care for every year. You can help by adopting one. Their dedicated ‘nannies’ teach them everything they need to know for when it’s time to release them back to the wild. You can follow their progress through Forest School.

Adopt Now
Make a Donation

Make a Donation

Please help the Orangutans in their struggle for survival. Your donation is important and goes directly to BOS Indonesia. By donating, you are helping bring this noble yet endangered species back from the brink of extinction and on a path to freedom - from rescue to rehabilitation and release.

Donate Now
Visit Our Shop

Visit Our Shop

The perfect gift for any occasion! Choose from our selection of instant gifts that directly support our orangutans. You can buy a wheelbarrow, provide food for an orangutan for two months or lots more. You will receive a certificate, personalised with the name of your choice - perfect gift for you or a friend.

Shop Now