A NEW BABY!
The Kehje Sewen Forest has welcomed a new resident! Following confirmation from our veterinarian in October last year that Lesan was pregnant, we are thrilled to announce that she has since given birth! Lesan was last... View Article
Recent News
Recent News
UNEXPECTED VISITORS
Do you remember Inung and Indie? The Post-Release Monitoring team recently spotted the unexpected visitors of a mother-infant pair near Camp Totat Jalu in the Bukit Batikap Protection Forest, Central Kalimantan. Inung and Indie were observed... View Article
BIRTH CONTROL FOR ORANGUTANS
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
A HIGH-STAKES FIRST DATE
On Saturday, November 12, a small caravan carrying some very special cargo departed from the BOS Foundation’s Nyaru Menteng Orangutan Rehabilitation Centre in Central Kalimantan. The teams started the day as the sun rose with a... View Article
SUN BEAR STORY: ADELE
Adele is a female sun bear who was first discovered by employees of PT. Inhutani in Long Nah, East Kutai Regency. At the time of her rescue, she was only about a month old, with her... View Article
500 ORANGUTANS RELEASED!
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
OVERCOMING THE TRAUMA
This year, our Nyaru Menteng Orangutan Rehabilitation Centre has taken in several traumatised, orphaned orangutans, including young female Temon. Together with the Central Kalimantan BKSDA, the BOS team helped rescue Temon on June 8, after receiving... View Article
WHO WILL BE NUMBER 500?
While we are preparing for the release of the 500th orangutan, please get to know the lucky ones that will enjoy their well-deserved freedom soon. BEN Ben was born in a clinic at the BOS Foundation’s... View Article
THE NOT-SO-SIMPLE TASK OF RELEASING ORANGUTANS
The culmination of an orangutan’s rehabilitation journey is the release of that orangutan into a protected natural habitat. Reintroduction is a long process that encompasses education in Forest School and putting skills into practice on a... View Article
ANOTHER BABY RESCUED
The BOS Foundation’s Samboja Lestari Orangutan Rehabilitation Centre recently took in another baby orangutan from the BKSDA Regional Conservation Division (SKW) II of Tenggarong. The BOS team – consisting of a veterinarian, surrogate mother, and communications... View Article
CHALLENGING FOREST LIFE
Working far away from urban areas has its unique challenges, as our Post-Release Monitoring (PRM) team from Camp Lesik in the Kehje Sewen Forest, East Kalimantan, can attest. Something the technicians regularly experience is running out... View Article
ORANGUTAN FOREST SCHOOL, BUMI?
It was another happy day at Nyaru Menteng’s Orangutan Forest School, with the Group 4 students located near the wooden bridge used to access the area on foot. In the space beneath the bridge, where thick... View Article
THREE NEW ARRIVALS, THREE MORE CHANCES FOR FREEDOM
The BOS Foundation recently received three orphaned baby orangutans – two males and a female – all in the same month. After passing the compulsory quarantine period, the trio joined Forest School with other youngsters their... View Article
FROM DEGRADED LAND TO LUSH FOREST
Thanks to your incredibly generous support, we are now breaking ground on a crucial rehabilitation project for a degraded peat swamp forest in Central Kalimantan, Borneo. The area was once part of a failed mega-rice cultivation... View Article
AYU, GROWING UP AND BOLD
6-year-old Ayu was born in the wild to the rehabilitated orangutans Lesan and Hamzah (presumed), who were both released in the Kehje Sewen Forest a decade ago. Young orangutans at Ayu’s age will slowly begin to... View Article
A DAY WITH DESI
Recently, our monitoring team conducted nest-to-nest observations on Desi, a female orangutan residing on Juq Kehje Sewen, one of BOS Foundation’s pre-release islands in East Kalimantan. The team, consisting of Aluna, Ubay, Rustam, and Erik, had been... View Article
HOW TO MAKE BABY ORANGUTANS 101
All living things, including orangutans, have the drive to meet their biological needs: water, oxygen, food, shelter – and the opportunity to reproduce. When it comes to wild orangutans, who live a semi-solitary life, the reproduction... View Article
ORANGTAN, MOTHER AND TEACHER, SIGNE
An overcast sky provided the perfect atmosphere for a relaxing afternoon at Camp Nles Mamse. While resting in a swaying hammock, I read a book and enjoyed the cool air as it gently breezed through the... View Article
MUD-BATH TIME!
On a scorching day at Nyaru Menteng’s Forest School in Central Kalimantan, some students from Group 4 discovered the ultimate way to cool down creating mud bath time. Monte was the first to find a refreshing... View Article
LOVELY LOCKS, LADIES
Orangutans have distinctive personalities and unique physical characteristics. These make it easy for those who work with them to tell individuals apart. A few indicators our technicians use to identify orangutans are body size, facial features,... View Article
WHO IS LONG’S COMPANION?
Our Post Release Monitoring team spotted Long again! The female orangutan left a deep impression on the BOS staff, as her relationship with Arief is one of the most extraordinary we have ever observed. It all... View Article
SIGNE’S UNIQUE FAMILY DYNAMIC
Recently, the Post-Release Monitoring (PRM) team had the rare chance to observe an orangutan mother and her two children together. Find out who it was and why this family is so special. At the time, Jimi... View Article
A PHENOLOGY DAY MYSTERY
One of the tasks of the Post-Release Monitoring (PRM) team involves collecting data on the phenology of natural-occurring plant species in orangutan habitats. While conducting phenological surveys, the BOS rangers occasionally meet orangutans as well. Let’s... View Article
COMMON, BUT STILL SPECIAL
The Ficus racemosa or, as it is commonly known, the cluster fig tree can be found growing throughout the Kehje Sewen Forest in East Kalimantan, where we release rehabilitated orangutans. It grows in lowland, tropical forests, mostly along... View Article
A BREATHTAKING RIVER CROSSING
We have an exciting update about mother orangutan Sayang and her daughter Padma. Our Post-Release Monitoring (PRM) team from Camp Lesik observed them in the Kehje Sewen Forest in East Kalimantan. When our PRM team from... View Article
ORANGUTAN WARRIOR RAHMADI
Please meet one of our orangutan warriors from the Mawas Conservation Program in Central Kalimantan. His name is Rahmadi, and he has worked for the BOS Foundation for an impressive 17 years. Rahmadi hails from the... View Article
DAVI – THE ADVENTUROUS EATER
Davi is nearly seven years old and a student at Samboja Lestari’s Forest School, where she continues to learn the skills required to survive in the wild. Davi practices daily how to find food, build nests... View Article
HAMZAH CRASHES THE PARTY
Earlier this year, our Post-Release Monitoring (PRM) team from Camp Lesik in the Kehje Sewen Forest, East Kalimantan, was observing orangutans when male Hamzah suddenly appeared out of nowhere Hamzah crashes the party. Find out what... View Article
PEER LESSON: HOW TO OPEN FOOD ENRICHMENT
Enrichment is essential in keeping the orangutans in our care mentally engaged while learning vital skills. Dr Nadine Adrianna Sugianto, Post-Doctoral Research Fellow at the University of Birmingham, is working on the Orangutan Enclosure Design Tool... View Article
BABY BUNGA BORN TO BUNGAN
We have some great news from the Kehje Sewen Forest in East Kalimantan regarding the birth of a new baby orangutan! In August 2021, our Post-Release Monitoring (PRM) team from Nles Mamse camp in the Kehje... View Article
“ONE OF THE MOST BEAUTIFUL PLACES IN THE WORLD”
One of the largest rainforests in Asia is located in Kalimantan, the Indonesian part of Borneo. Within it lies the Kehje Sewen Forest, where we release rehabilitated orangutans. To give you a glimpse of the beauty... View Article
AN ADRENALINE-FILLED 39th ORANGUTAN RELEASE
There are certain moments you never forget, moments that hold special meaning and evoke strong emotions. I had such an experience during the 39th orangutan release conducted by the BOS Foundation in Central Kalimantan on May... View Article
OUR FIRST RELEASE OF 2022 – MEET THE CANDIDATES
It’s happening again! We are thrilled to announce that we are getting ready for our first release this year. We are about to bring four orangutans home into the Bukit Baka Bukit Raya National Park in... View Article
LET THE SUNSHINE IN
Saving orangutans also means protecting their rainforest homes and fighting climate change. To reduce our carbon footprint, BOS Australia and BOS Switzerland, together with the BOS Foundation, built a new solar system at our Samboja Lestari... View Article
DILLA IS FINDING HER WAY
We have an update on Dilla! She is one of our unreleasable orangutans, and she became famous in the documentary series ‘Orangutan Jungle School’. While all orangutans in BOS Foundation’s care have a tragic backstory, Dilla... View Article
CHECKING IN WITH OUR LATEST RESCUES
Every year, the BOS Foundation’s two Orangutan Rehabilitation Centres – Nyaru Menteng and Samboja Lestari – take in rescued, orphaned orangutans. They must undergo a lengthy rehabilitation process before we can release them into a secure,... View Article
