April 23, 2025, marked a historic moment in Indonesia’s orangutan conservation efforts. The Ministry of Forestry of the Republic of Indonesia, the East Kalimantan Natural Resources Conservation Agency (BKSDA), and the Borneo Orangutan Survival (BOS) Foundation,... View Article
The Ministry of Forestry of the Republic of Indonesia, the Natural Resources Conservation Agency (BKSDA) of East Kalimantan, and the Borneo Orangutan Survival (BOS) Foundation—with support from Riau Andalan Pulp and Paper (RAPP)—are preparing for the... View Article
Our Post-Release Monitoring (PRM) team in the southern section of the Kehje Sewen Forest recently had another encounter with Signe and her baby. The infant now has a name: Rafalang, which is a combination of the... View Article
In late 2024, Yuyun’s health took a significant turn for the worse. On Island #0, where she had lived with her fellow orangutan Jeffrey for a long time, Yuyun appeared weak and had lost her appetite.... View Article
Welcome to another thrilling day at the Nyaru Menteng Forest School! Today, we’re hanging out with our favourite cheeky orangutans—Paulinus, Bumi, and their playful pals—for some epic fun with fresh-cut grass! The youngsters stumbled upon a... View Article
Our Post-Release Monitoring (PRM) team recently spotted a familiar face in the Bukit Batikap Protection Forest. After being untracked for several years since her release in 2015, the female orangutan Mentos was finally identified again. Even... View Article
In addition to 116 orangutans, our Samboja Lestari Centre currently accommodates 76 sun bears. Many of them are orphaned cubs who need nursery care and go to Forest School, similar to our orangutans. “Sun bear cubs... View Article
Patrick Rouxel serves as a consultant for the BOS Foundation’s Sun Bear Program. His unwavering passion and commitment to improving the facilities of the sun bears at Samboja Lestari are essential to their well-being. What inspired... View Article
BOS supports not only orangutans and sun bears but also the indigenous communities living in and around the forests of Kalimantan. We proudly uphold their traditions, such as the Hudoq Festival of the Dayak people, passed... View Article
Orangutans go to the dentist, too. Our veterinarians handle everything from serious adult procedures to playful check-ups for young ones. Recently, Herkules wasn’t feeling well. He was suffering from cavities and a fractured root tooth, which... View Article
We have recently welcomed a new infant orangutan at the Samboja Lestari Rehabilitation Centre. Little Jenny’s rescue story began when a villager found her alone on an oil palm plantation. Believing she was a macaque, he... View Article
At the end of last year, sweet Meryl embarked on her new life in Bukit Baka Bukit Raya National Park. Despite experiencing stress during the journey, Meryl quickly adapted to her new environment. Her journey symbolises... View Article
Reuniting with rehabilitated orangutans always brings unique stories for our Post-Release Monitoring (PRM) teams at release sites. Here is one from the Kehje Sewen Forest. It was a bright morning when the PRM team members went... View Article
Do you remember the story of Hamzah crashing Lesan and Sayang’s party? It’s been two years since orangutan Sayang and her baby, along with Lesan and her offspring, last celebrated at Camp Lesik. Recently, they returned... View Article
Temon, a 3-year-old female orangutan, and Lahei, a 4-year-old male, are skilled and independent explorers from the large Forest School group at the Nyaru Menteng Rehabilitation Centre. Recently, they kept our surrogate mothers on their toes... View Article
Just like humans, orangutans also require proper dental care, including regular check-ups and specialized treatment. Recently, Herkules, one of the male orangutans in our rehabilitation centre, underwent a dental operation to address problems with his teeth,... View Article
What a surprise! After a long absence, one of the dominant male orangutans, Hamzah, has finally been spotted again near Camp Lesik in the Kehje Sewen Forest. Our Post-Release Monitoring (PRM) team was stunned by Hamzah’s... View Article
We have a beautiful story about a mother and her infant from one of our release locations in Bukit Baka Bukit Raya National Park. Our Post-Release Monitoring team in the Hiran watershed successfully observed Hilda, a... View Article
In collaboration with BKSDA Central Kalimantan, the BOS team has rescued another baby orangutan. On August 12, 2024, the Nyaru Menteng Orangutan Rehabilitation Centre received a report about a baby orangutan in Tumbang Samba Village, located... View Article
Runtu, a 23-year-old female, is one of six orangutans we recently released into the Bukit Baka Bukit Raya National Park (TNBBBR). She is a repatriated orangutan from Thailand and has been undergoing challenging rehabilitation at the... View Article
We spoke with veterinarian and animal welfare specialist Dr Fransiska Sulistyo about the future of unreleasable orangutans. Could you tell our readers a little bit about your history with BOS? I graduated as a veterinarian in... View Article
Since 2020, the BOS Foundation has worked with the University of British Columbia (UBC) in Canada and the Bogor Agricultural University to install camera traps in the Bukit Batikap Protected Forest. Although they are called camera... View Article
We are thrilled to announce that on 10 November 2024, our beloved Meryl finally embraced her freedom in the wild after being released into Bukit Baka Bukit Raya National Park. The spirited female began her new... View Article
Sanctuary Islands are not just islands; they offer life-changing opportunities for orangutans, who would otherwise be condemned to live in cages. Not all residents of the BOS Foundation’s rehabilitation centres can return to a natural forest... View Article
On November 10, 2024, we successfully released six orangutans back into the wild from the Nyaru Menteng Rehabilitation Centre to the Bukit Baka Bukit Raya National Park. The preparation for this release was conducted with meticulous... View Article
In addition to Post-Release Monitoring (PRM), PT. Restorasi Habitat Orangutan Indonesia (PT. RHOI)* also runs a habitat management and restoration program (PPH). This program is one of the ecosystem restoration activities carried out by the RE-PPH... View Article
BOS Foundation’s Samboja Lestari Orangutan Rescue and Rehabilitation Centre is also a sanctuary for rescued sun bears. Recently, we welcomed a new arrival—a tiny sun bear cub named Andre, just around two months old. In early... View Article
Earlier this year, the smart Josh and tenacious Telaken finally made their way to a pre-release island, marking a significant milestone in their journey back to the wild. Along with three other orangutans—Uru, Bawan, and Monte—they... View Article
Earlier this year, the BOS Foundation welcomed a wave of new personnel in three divisions: Post-Release Monitoring, Ecosystem Restoration–Forest Management & Development, and Ecosystem Restoration-Protection, Security, and Fire Management. Each division has its distinct roles and... View Article
Orangutans are arboreal primates. Most of their activities involve navigating the forest canopy by combining climbing, clambering and brachiating. Given that orangutans share 97% of their DNA with humans, it is intriguing to explore how their... View Article
Since arriving on Badak Besar Pre-Release Island in December 2023, Taymur has made himself at home near feeding platform #3. Find out what he has been up to. As Taymur adapts to his new environment, he... View Article
The Post-Release-Monitoring Team was thrilled to have finally sighted female Signe and her baby again. Discover how they are doing. It took over a year before Signe finally reappeared near the Camp Nles Mamse area in... View Article
After four long years of anticipation, Orangutan Jungle School Series 3 is finally here. We are thrilled to get some exclusive insights from Judith Curran, the amazing creator of this award-winning documentary series. How excited are... View Article
We are thrilled to announce that we recently joined “Include a Charity”, a social change campaign that aims to encourage more Australians to pledge a charitable gift in their Will. Did you know that gifts pledged... View Article
Get ready! Our volunteer program in Borneo starts in October, and due to popular demand, we have just announced our second Trek for Orangutans, which is filling up quickly. We have great news for all the... View Article
While season 3 of Orangutan Jungle School is finally airing, we are thrilled to have added this season’s star to our adoption program. Please welcome Bumi. The seven-year-old arrived at our Nyaru Menteng centre on 18... View Article
