BOS Foundation

📸 Captured by Sylvateja

More than just a handsome face 🦧✨

Bujang is a flanged male orangutan. His iconic cheek pads don't just make him look impressive, they also help amplify his "long call" a vocalization used to communicate across the forest.

Happy World Environment Day 🌿

The future of our planet depends on the choices we make today. Every forest protected, every habitat restored, and every species conserved helps keep nature in balance for generations to come.

Together, we can create a future where people and wildlife thrive side by side 🌍

Once he lived in a rehabilitation center. Now he explores the forest on his own.
Our monitoring team finally encountered Otan again, a male orangutan released in November 2025 in the Bemban River watershed of Bukit Baka Bukit Raya National Park. That morning, Otan was calmly eating sangkuang fruit, exploring the forest, foraging independently, walking along the forest floor, and eventually building his night nest high in the trees.
Otan’s journey shows that release is not the end of the story, but the beginning of a new life as a truly wild and independent orangutan.
Encounters like this remind us that a protected forest gives them the chance to truly come home.

👉 Read the full story of Otan, the explorer from the upper Bemban River, on orangutan.or.id/otan-the-explorer-from-the-upper-bemban-river

Behavior tells an important story 👁️

Trauma in orangutans is a complex health challenge. Because they cannot explain what they experience, rehabilitation teams rely on careful observation to understand their recovery.

By observing eating patterns, movement, exploration, and social responses, teams can see how progress unfolds over time. Orangutans like Mema, Bujang, and Putri show how behavior can gradually change with consistent care.

Just like in humans, recovery is not only physical.

📖 Curious to learn more? Read the full article here → orangutan.or.id/understanding-orangutan-mental-health

Celebrating Vesak Day, a time to reflect on peace, compassion, and harmony with all living beings 🕊️✨

📸 Captured by Dawid
The sweet smell of yummy lunch 🦧

Orangutans rely greatly on their sense of smell to find food in the rainforest. By sniffing fruit carefully, they can tell whether it is ripe and ready to eat, helping them choose the best source of energy in the wild.

One simple sniff might not look important, but for orangutans, it is part of the survival skills they use every single day in the forest 🍃

Behind every orangutan data point, there is a long journey through the forest.

The Biodiversity and Post-Release Monitoring team trekked through the Kehje Sewen Forest, opening transect routes, recording orangutan nests, and conducting biodiversity inventories. Their journey was far from easy: crossing rivers, climbing steep hills, and even getting trapped in an endless field of ferns. Yet every step they took helped collect important data to ensure the forest remains a safe home for orangutans and other wildlife.

Because behind every number in a report, there is always a story of dedication, teamwork, and small steps to keep the forest alive.

👉 Read the full story of the orangutan monitoring and biodiversity expedition in Kehje Sewen on orangutan.or.id/orangutan-monitoring-expedition-biodiversity-inventory

Look at the glow-up. 👀

Recovery doesn’t happen overnight. For many rescued orangutans, healing can take months—even years.

When they first arrive, their condition often reflects a long time away from the forest. But with rehabilitation, consistent care, and time, the changes slowly begin to show.

Looking at these photos, which moment hits you more—the rescue moment, or the progress after?

💬 Tell us in the comments.