Not all orangutan behaviours are the same. One significant difference lies between wild and rehabilitated orangutans. Although they belong to the same species, their different life experiences play a significant role in shaping their unique behaviour.... View Article
After graduating from Forest School and mastering essential survival skills, Bumi is ready for his next big challenge—he recently moved to Bangamat Pre-Release Island, the last step on his rehabilitation journey. Together with his friend Monita,... View Article
Do you remember Sie-Sie, the orangutan who was released into the wild last April? Unlike most orangutans who immediately climb trees or quietly distance themselves after release, Sie-Sie reacted with aggression. He showed signs of stress... View Article
In two separate transfers from our rehabilitation centers in Central and East Kalimantan, the BOS Foundation team released six and five orangutans back into the wild, bringing the total number of orangutans reintroduced since 2012 to... View Article
Jumbo was the fifth orangutan released by the BOS team into the Bukit Baka Bukit Raya National Park in Central Kalimantan. He followed Hanau, Pirang, Rongda, and Radmala, who were released prior. These five orangutans were... View Article
Jumbo is about to experience his well-deserved freedom in the Bukit Baka Bukit Raya National Park as part of the upcoming release from the Nyaru Menteng Rehabilitation Centre. Before that happens, let’s take a moment to... View Article
The Ministry of Forestry of the Republic of Indonesia, the Central Kalimantan Natural Resources Conservation Agency and the Borneo BOS Foundation will soon conduct the 45th orangutan release from the Nyaru Menteng Rehabilitation Centre to Bukit... View Article
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 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
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
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
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
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
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
At the end of last year, the BOS Foundation team successfully released eight orangutans from the Nyaru Menteng Orangutan Rehabilitation Centre into the Bukit Baka Bukit Raya National Park. This release was quite challenging, as the... View Article
Another beloved orangutan from our adoption program is ready to enjoy true freedom in the Bornean rainforest. We are incredibly proud of Meryl and so thankful to her adopters who supported her during her nine-year rehabilitation... View Article
The Ministry of Environment and Forestry of the Republic of Indonesia (KLHK), the Natural Resources Conservation Centre (BKSDA) of Central Kalimantan, and the Borneo Orangutan Survival (BOS) Foundation will soon conduct the 44th orangutan release from... View Article
Our Post-Release Monitoring (PRM) team at Camp Himba Pambelum in the Bukit Baka Bukit Raya National Park finally spotted Suci again. Find out how the young female is doing. The PRM team was thrilled to encounter... View Article
We are thrilled to announce that the BOS Foundation team has returned another eight orangutans to their forest home in the Bukit Baka Bukit Raya National Park. In collaboration with the park office and the Central... View Article
Recently, a resident of Sei Gohong village reported that a wild orangutan had approached the outskirts of the village area. BOS swiftly took action to rescue the animal. A male orangutan was sighted close to the... View Article
The Borneo Orangutan Survival (BOS) Foundation, together with the Ministry of Environment and Forestry of the Republic of Indonesia (KLHK) and the Central Kalimantan Natural Resources Conservation Centre (BKSDA), will soon conduct the 43rd orangutan release... View Article
We have not one but two beautiful opportunities for you to support our cause this festive season and spread some cheer for our amazing red cousins. While we are celebrating each successful release, we must not... View Article
We are thrilled to report that we brought another twelve orangutans home. In mid-November, our parent organisation, the BOS Foundation, successfully conducted their 68th orangutan release as a monumental back-to-back airlifting operation. It was a long-planned... View Article
CANDIDATES FOR THE 42nd ORANGUTAN RELEASE FROM NYARU MENTENG The Ministry of Environment and Forestry of the Republic of Indonesia (KLHK), the Natural Resources Conservation Centre (BKSDA) of Central Kalimantan, and the Borneo Orangutan Survival (BOS)... View Article
A release is the final stage of an often lengthy and challenging rehabilitation process. The culmination of this process is the return of orangutans to their forest homes, where they can naturally contribute to the ecosystem... View Article
In 2013, a female orangutan named Cici missed her chance at true freedom when the BOS Foundation team had to postpone her release. Today, Cici is 24 years old and a resident of Kaja Island, where... View Article
Do you remember the orangutans we released into the Kehje Sewen Forest in May? Amongst them are Andreas, Riana, and Leann. Find out how they are doing in their new home in the forest. Andreas, Riana,... View Article
If you’ve ever watched the documentary series ‘Orangutan Island’, you know her – the coolest female star ever to hit the TV screen: ‘Sheriff Daisy’. It’s been a while since we’ve seen her, but our Post-Release... View Article
In June, we released ten more orangutans into the Bornean rainforest. One of them was eight-year-old Kejora. Her life is a story of both unbelievable cruelty and hope. Despite her tremendous challenges, Kejora’s release proves that... View Article
In May, the BOS Foundation successfully conducted its 25th orangutan release in East Kalimantan. Immediately after, the Post-Release Monitoring (PRM) team started their nest-to-nest observations on the five orangutans, paying particular attention to Mayer and Elaine.... View Article
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... View Article
Meet Nur, the RHO Community Development Coordinator at BOS Foundation’s Orangutan Habitat Rehabilitation (RHO) programme in East Kalimantan. While her work is not directly with orangutans, Nur’s role significantly impacts BOSF’s orangutan reintroduction programmes. What does... View Article
In our first release of 2023, the BOS Foundation team recently returned five orangutans to their wild home. It is one of those moments that still give us goosebumps: The second when one of our rehabilitated... View Article
Can you imagine how difficult it must be for an orangutan to climb trees, forage for food, and build nests – with no arms? Yet, Kopral makes it look easy. He is our superhero and one... View Article
