BOS Foundation, Central Kalimantan BKSDA, Bukit Baka Bukit Raya National Park (TNBBBR) Agency Release 12 More Orangutans to TNBBBR in Central Kalimantan


In keeping with the #OrangutanFreedom campaign goal of releasing 100 orangutans to conservation forests this year, the BOS Foundation (BOSF), Central Kalimantan BKSDA, and the Bukit Baka Bukit Raya National Park (TNBBBR) Agency have again worked together to release rehabilitated orangutans from Nyaru Menteng.

Twelve orangutans from Nyaru Menteng were released to the TNBBBR in Central Kalimantan in the 18th orangutan release by BOSF Nyaru Menteng. This event takes the total number of rehabilitated orangutans released from Nyaru Menteng to 30 so far this year.

The twelve orangutans included eight females and four males, which were divided into two batches and dispatched on different days. The first batch – Elin, Heidi, Cameron, Geragu, Tubagus, and Tuhe – departed from Nyaru Menteng on August 2, and were released the following day. Meanwhile, the second batch, which included Seruni, Suryani, Mariam, Niken, Pak Edi and Otong, departed on August 4, and were released the next day.

Our release teams sedated the orangutans at around 3 p.m. on the day of departure, then transferred them into transport cages in the Nyaru Menteng quarantine complex, ready for the long journey.

Orangutan health check

The team leaves Nyaru Menteng to TNBBBR

Once the orangutans were checked by a vet, they departed from Nyaru Menteng with the release team. The journey from Nyaru Menteng to the TNBBBR took about six hours by car. As always, our team followed strict protocol throughout the journey; stopping every two hours to check on the orangutans, and offer them food and water.

Checking in on orangutans throughout the trip

Upon reaching Tumbang Tundu Village, the team took small motor boats known locally as ‘ces’ or ‘kelotok’ on a five-hour journey along the river.

On approach at the river bank near camp, the transport cages were lifted one by one from the boats and carried to pre-determined release points located in the TNBBBR. The twelve orangutans were soon released into their natural habitat and could taste true freedom in their new home!

Transferring transport cages from the boats

Malik opens the Geragu’s cage

Agus opens the Tubagus’s cage

The BOS Foundation has released 47 orangutans to the Bukit Baka Bukit Raya National Park. With these 12, the number of orangutans released to the TNBBBR now stands at 59 individuals. This release has increased the total number of orangutans released by the BOS Foundation to 301 orangutans.


The BOS Foundation would like to express gratitude for the support of all parties and their contributions to assisting the conservation effort in Indonesia.

Text by: BOS Foundation Communications Team

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