Since April 2023, Kopral has been receiving treatment at the clinic for wounds on the sole of his right foot and fungus between his toes. Find out how he is doing. While Kopral stayed the first... View Article


4-year-old Monyo is part of our adoption family and enjoys his days in Forest School. His social skills have greatly improved; he is close with Niniek and friendly with Jeni, Ramangai, Aiko, and Alexander. Together with... View Article


Today, we would like to introduce you to another orangutan warrior from the Nyaru Menteng Orangutan Rehabilitation Centre in Central Kalimantan. Meet Mas Surip, the welding coordinator. What is your responsibility at Nyaru Menteng? I keep... View Article


Taking care of over 400 orangutans in two centres includes regular fitness checks by our dedicated veterinarian team who are keeping our orangutans healthy. Routine exams help us monitor the general health of the orangutan population... View Article

Meet Mawas

The Mawas Conservation Program is one of our working areas in Central Kalimantan. Unlike the Nyaru Menteng Orangutan Rehabilitation Centre, it does not address orangutan rehabilitation but concentrates on preserving the population of wild orangutans living... View Article

Keeping rituals alive

In addition to protecting and preserving Bornean orangutans and their habitat, BOS works closely with local communities to help maintain their cultures and traditions. One example of a traditional ceremony we participate in is the naq lom. It... View Article

Feasting in the forest

In the forest, our Post-Release Monitoring (PRM) team members rely on supplies purchased monthly in Muara Wahau, the nearest town to Camp Nles Mamse, about 70 kilometres away. There, logistical and bulk food supplies, including vegetables... View Article

The power of the hornbill

The hornbill is a perfect example of how tight nature and culture are interwoven. The unique bird with its brightly coloured and distinctively shaped bill not only helps to maintain the quality of forest ecosystems; it... View Article