In the orangutan conservation world, it is generally a rule of thumb that only baby orangutans should be rehabilitated back into the wild. Teenage orangutans are considered to old and unmanageable for the rehabilitation process. We have experts in the past that have failed to achieve anything with our very own teenager, Doris. Doris was so humanised after years of captivity that rehabilitation was considered impossible by many. One expert even diagnosed her with vertigo!

However, on Wednesday 22nd of October, a date etched into orangutan conservation history, the Great Orangutan Project's very own Leo Biddle, along with Sarawak Forestry's courageous keepers, Hillary and Eddie, managed to spend a night in the forest at the 'Piers Mott' Ranger Station with teenage orangutan, Doris. Here's the update from Leo himself:

"On Wednesday 22nd we managed to convince Doris to spend her first night ever in the jungle, at the newly completed Piers Mott Ranger Station previous volunteers have worked so hard to build.


Doris out in the jungle

For much of the last year Doris has been going out on excursions into the forest under supervision, but until Wednesday has always been brought back to the orangutan dens at night.

Unlike Ting San and Mamu, who have spent many nights out already, we have been waiting for Doris’ confidence in the forest to increase before making her take this important next step towards eventual release.

At points in her training prior we have kept her in the jungle until the light begins to fade before bringing her back in. On these occasions she has generally made it emphatically clear that she does not wish to remain in the jungle at night and Doris’ size and considerable strength are very effective at making points emphatically!
A part of this is due to fear of the unfamiliar; the jungle at night is very different to during the day with different noises and insects – indeed when we have taken previous volunteers on night walks or to camp out there, several of them have found it to be a frightening or challenging experience…

Another factor of course is a break from the routine. Captive orangutan, just like other animals including humans, can quickly become habituated to a daily regime prevalent to their confinement and despite our continuing efforts on enrichment for the last 9 years – Doris has slept at night in a cage.

When she was first taken into the jungle back in December 2007 it was a wholly new experience for her and one that took her time to adjust to; until now it would be fair to say that she enjoys her days spent in jungle training. In time we hope to persuade her that sleeping in the jungle at night can be equally enriching and rapidly become routine.

Doris seemed to be suspicious when we hoisted her over her enclosure wall much later than normal; but presented with the prospect of accompanying three of her favourite keepers into the jungle she was content to follow.

On arrival at the new station, Doris acted as though it had always been there; promptly going up to the door and even knocking!


Knock knock, who's there? Doris at the Piers Mott Ranger Station

Shortly after arriving at the station the light rapidly began to fade; aside from a few gentle shoves to remind us we really ought to be heading back and slightly more wistful stares back in the direction we had came from Doris was surprisingly relaxed at the impending night out of doors.

We later all agreed that she probably knew what we were taking her out for around the time we lowered a rope over her wall back at the centre.


Wistful stares

We’d half expected that Doris would forcibly demand to spend the night in the ranger station with us when it got dark; but wanted to avoid setting a precedent. So we were pleased that after a half-hearted attempt to break in she promptly climbed onto the roof and went to sleep.

The whole night passed uneventfully and we were woken at first light by Doris knocking on the door again.


The morning after

Doris was in exceptionally high spirits and showed no signs of distress or fatigue from her night out, in fact it was our intention to take her straight back to the centre as soon as we woke, however Doris seemed intent on staying in the jungle even taking to the trees of her own volition.

So after feeding her on her new platform that the Orangutan Release group in September built we spent most of the morning letting her climb before bringing her back in.


Doris gets used to the new feeding platform

On the 10th of November we plan to bring her back out to the ranger station with the centre's baby orangutan, Ting San and Mamu, and keep the three of them there for a one week trial before eventually releasing them all there under 24 hour supervision.


We can confirm that Doris does not have vertigo

We’ll be sure to keep you posted with how it all goes."


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