Restoration initiatives are crucial for preparing the Kehje Sewen Forest as a future release area for rehabilitated orangutans from our Samboja Lestari Rehabilitation Centre in East Kalimantan. By maintaining the habitat and ensuring an ample supply... View Article
The BOS Foundation recently relocated two orangutans from the Individual Enclosure Complex to Sanctuary Island #5 at the Samboja Lestari Orangutan Rehabilitation Centre–a significant step towards a more natural environment. The move is part of the... View Article
Sally, a female orangutan who previously lived in the Socialisation Complex at Samboja Lestari, has taken a huge step on her rehabilitation journey: the BOS team relocated her to the Juq Kehje Swen Pre-Release Island in... View Article
The Ministry of Forestry of the Republic of Indonesia, the Central Kalimantan Natural Resources Conservation Agency, the Bukit Baka Bukit Raya National Park, and the Borneo Orangutan Survival (BOS) Foundation will soon conduct the 46th orangutan... View Article
Mating behaviour is one of the most important forms of social interaction in the life of orangutans. This interaction occurs between male and female individuals and plays a vital role in ensuring the survival of a... View Article
In the vast wilderness of Bukit Baka Bukit Raya National Park, Central Kalimantan, the story of Suci, a young female orangutan, continues to unfold with new wonders. First released in 2021, Suci occasionally appeared during observations... View Article
As part of ongoing efforts to protect the Kehje Sewen Forest in East Kalimantan, the Community Development Team and the Ecosystem Restoration – Forest Protection, Security, and Fire Prevention (RE-PPHK) Team from BOS Foundation’s company PT... View Article
Nestled in East Kalimantan, the Kehje Sewen Forest is a tropical treasure trove—rich in both biotic and abiotic resources that make it a globally significant ecosystem. Home to a wide variety of plant and animal species,... 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
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
In the large group at Forest School, seven young orangutans actively play and learn together under the watchful care of our experienced surrogate mothers. It has been two months since these orphans moved to the site... View Article
At the end of 2024, Baimah and Feruza advanced to Forest School Level 1. Their journey to this new stage of their rehabilitation journey began with an adaptation process full of challenges. When Baimah arrived at... 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
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
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
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
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
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
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
Galaksi, once a tiny and fragile orangutan at Samboja Lestari’s Rehabilitation Centre, has blossomed into a lively and spirited youngster. Since he arrived in 2021, Galaksi has been under the careful watch of our dedicated surrogate... View Article
Who remembers Petto? We have missed him since our Post-Release Monitoring (PRM) team from the Himba Pambelum Monitoring Camp in Bukit Baka Bukit Raya National Park Area (TNBBBR), Central Kalimantan, last encountered him in August 2022. ... View Article
As we at BOS Australia are proud to present our upcoming Eyes of the Orangutan screening events in Sydney, Melbourne and Auckland, we would like to introduce you to one of the orangutans who have been directly... View Article
Do you remember Ben, the 500th orangutan the BOS Foundation released in November 2022? Our Post Release Monitoring team recently spotted him in his new forest home. One morning, the Post-Release Monitoring (PRM) team in the... View Article
Camp Lesik has had a new visitor. The Post Release Monitoring (PRM) team recently observed an orangutan off the back of the camp. While we don’t yet know who this individual is, we can be certain... View Article
The BOS Foundation recently collaborated with the Indonesian Snake Sioux Foundation to provide snake-handling training for the Post Release Monitoring (PRM) team members. As a result, the team’s perceptions of snakes changed. Snakes will either spark... View Article
Our Post-Release Monitoring (PRM) team in the Hiran watershed recently observed Gonzales, a male orangutan the BOS Foundation team released in November 2022 in the Bukit Baka Bukit Raya National Park. What was he up to?... View Article
The forest is home to many different and unique animal species. Now and then, we introduce you to one of the many fascinating individuals sharing their habitat with the Bornean orangutan. Some tread the ground, others... View Article
It has been some time since we brought you a new Orangutan Warrior profile. This time, we’d like to introduce you to one of the inspiring women who has been a part of our Orangutan Habitat... View Article
Orangutans are semi-solitary primates who spend the majority of their lives alone. However, in some orangutan populations, the females will gather in groups from time to time, especially during the fruiting season, when forest food is... View Article
On 6 December 2022, the Balikpapan BKSDA received a report from an employee of PT. Balikpapan Wana Lestari (BWL) that an orangutan had visited the workers’ camp and interacted with staff over four consecutive days. According... View Article
On 3 November 2022, a resident of Tumbang Kajamei village in Central Kalimantan travelled for four hours by motorcycle to hand over baby orangutan, Iqo to the BOS Foundation team. When the little female arrived at... View Article
We at BOS have played a part in changing the lives of thousands of orangutans in Indonesia. Our job is not one we have taken on eagerly, but together with the government of Indonesia, we must... View Article
The BOS Foundation is on a mission to release as many ready orangutans as possible from its two rehabilitation centres into the wild, where they can breed naturally in the forest. However, while in a rehabilitation... View Article
The BOS Foundation has successfully released 500 orangutans in the decade since the releases restarted in February 2012. Our latest release journey began in the evening when swabs were used to collect samples from team members... View Article