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 started when Long spotted young orphan male Arief for the first time. Her maternal instincts seemed to kick right in as she instantly lifted Arief into her arms. Long carried her newly adopted child off with her, and the two became inseparable – a truly rare and remarkable wild adoption. The BOS team in Indonesia released the pair into the Kehje Sewen forest in East Kalimantan in August 2015. They were last seen together a few years later.

Spotted on patrol

Now that Arief is old enough and he and his surrogate mum go separate ways, two Post-Release Monitoring (PRM) team members recently observed Long with another male. It was early in the morning when Yusuf and Fathur headed out to monitor orangutans. About two hours after leaving Camp Nles Mamse, the rangers finally spotted two individuals spending time together. They identified one of them as Long. But who was her companion?

Long (right) and her unidentified friend spent a lot of time together in the trees. 

The PRM team observed the couple eating lianas, rattan, and the bark of a breadfruit tree. They also saw them chewing seeds and fruits from other forest plants. Besides eating together, the two orangutans appeared to enjoy some time resting and lying down together.

The couple enjoyed each other’s company

Long and the unidentified male seemed very comfortable with one another, as indicated by their body language. They stayed close together and occasionally even touched and shared food.


However, Long and her friend eventually spotted the PRM team members watching them and didn’t stop kiss-squeaking, showing their displeasure at the human presence. Clearly not welcomed, Yusuf and Fathur decided it was time to return to camp – but not without the intention of coming back and identifying Long’s mysterious companion another time. So, stay tuned for more!


You can make a change and help save orangutans! Donate now!


How Can You Help

There are lots of ways you can support orangutans and help ensure the survival of this precious ape.

Adopt an Orangutan

Adopt an Orangutan

Orangutans are endangered and at risk of extinction. Habitat destruction results in hundreds of orphaned orangutans, who rely on our care every year. You can help by adopting one. Their dedicated ‘nannies’ teach them everything they need to know for when it’s time to release them back to the wild. You can follow their progress through Forest School.

Adopt Now
Make a Donation

Make a Donation

Please help the Orangutans in their struggle for survival. Your donation is important and goes directly to BOS Indonesia. By donating, you are helping bring this noble yet endangered species back from the brink of extinction and on a path to freedom - from rescue to rehabilitation and release.

Donate Now
Visit Our Shop

Visit Our Shop

The perfect gift for any occasion! Choose from our selection of instant gifts that directly support our orangutans. You can buy a wheelbarrow, provide food for an orangutan for two months or lots more. You will receive a certificate, personalised with the name of your choice - perfect gift for you or a friend.

Shop Now