After spending 3 months in quarantine, Katherine (estimated to be around 16 years of age) and Peter (perhaps as old as 25) were transferred into the orangutan dens. The move itself went incredibly smoothly, both orangutan had to be sedated to be moved, and although neither of them are keen on the blowpipe being pointed at them, the move was as stress-free as possible for humans and animals alike.



Peter's current location means he is often in view of George, one of the dominant males at Matang. Though they have seen each other before, this is the first time they have been in close proximity, and neither of them are very happy with the presence of the other. Wisely, when separated by just the bars of a cage, Peter keeps well clear of George, though he was recently seen being quite bold and pulling George's hair! Follow the link for a short video of Peter vocalising at George; this appears to be part aggression and part fear.



Though it is not clear from the video, Peter is very different in appearance to both Aman and George, though it is suspected he is older. This is because Peter is not yet a dominant male, therefore has not developed the prominent secondary sexual characteristics of such. Peter was malnourished on arrival, with no small amount of digestive worms, and it is thought that these factors inhibited his development into a dominant male. With the worms cleared and his nutrition vastly improved, we are waiting to see if he will now grow the characteristic flanges and throat pouch to mark his dominance, or whether this development will be inhibited by the presence of George. These changes are hormonally controlled, and the presence of another dominant male can delay or halt entirely another male's development.



After a couple of days alone to settle in, Katherine was mixed in the large outdoor enclosure with Doris and Ting San. Ting San spends most of her days in the jungle, so Katherine has spent the majority of her time with just Doris for company. Here is a link to a short video of one of their first interactions - Doris did not take kindly to her new housemate, and was witnessed on numerous occasions throwing various objects at Katherine, or hitting her and then bidding a hasty retreat.

Katherine has been completely un-phased by this unfriendly greeting. She has enjoyed herself exploring the new enclosure and has enjoyed interacting with Doris, seemingly unaware that her presence is resented. Doris was initially a little afraid of Katherine and has been forced to give up enrichment on occasion, which is a great change as she has for a long time had her own way entirely over Ting San.

These two orangutan now seem at peace with each other and both seem to like each others company. They still fight over enrichment, but competition can be healthy!



Katherine already has a good relationship with the orangutan keepers here at Matang. She is a very friendly orangutan and seems relatively easy to handle. The keepers are determined to include Katherine in the rehabilitation process and see no reason why she should spend the rest of her life in captivity. We will of course keep you updated on her progress, and her first jungle experience as and when it happens.

Labels: aman, orangutan, orangutan rescue, orangutan volunteer, Orangutans and Rehabilitation, sarawak orangutan volunteer

On Thursday, September 17th, Ghanti was released from her captive life at Matang. Keepers here had been awaiting Chiam's presence at the centre, so that Ghanti would have a confident orangutan to follow, and to convince her that life is better off in the trees. On the above date, Chiam did indeed return to the centre - she was seen climbing on the tower cage at the front of the orangutan dens and her and Peter were showing great interest in each other. Aman and George were furious, Aman climbing to the top of his platform in the enclosure and shaking it backwards and forth. Perhaps they did not enjoy a female's attentions being given to a sub adult male. The photo below was taken by a volunteer - it is Aman looking down upon Chiam hanging on the side of Peter's cage.



Hilary took this opportunity to open Ghanti's cage and see if she would join Chiam. Burst out through the front doors into freedom she did not, instead sat looking at the open door, and at Hilary, from the comfort of her sack for about twenty minutes. However, when it became clear we were not teasing and this was really the option available, Ghanti did indeed stroll out the front door and made off into the tree line behind Aman's enclosure, with Chiam following quickly after.

The release of orangutan from the centre is certainly bitter sweet. With both Chiam and Ghanti, it was an educational privilege to see, close up, how orangutan mothers deal with the early months after birth, and watch how the relationship and bond between mother and infant begin to develop. Seeing the youngsters mature and gain both in size and confidence has also been wonderful, but always at the back of the mind was the regret that their first learning experiences were of navigating bars rather than trees. It is with gratifying joy that we can now think of these young orangutan learning skills to equip them for a life in the rainforest.

We will keep you posted on Chiam and Ghanti's progression in their new life in Kubah National Park.

Labels: aman, chiam, Ghanti, matang, orangutan, orangutan baby, orangutan mother, orangutan release

Mamu, the daughter of Chiam and Aman, was born at the centre in 2004. She spent her first couple of years in the trees with her mum, but it became clear that Chiam was struggling to provide for both herself and her infant while roaming the forest, so mother and child were brought back to the centre, separated, and provided with lots of nutrition. Since that point, Chiam has given birth to a second baby and Mamu has been continuing jungle training under the careful supervision of our orangutan rehabilitation officers, Hilary Kidding and Eddie Indriss.

She began with day trips into the jungle, where she was quickly mixed with Ting San, another orangutan of similar age who was far less competent in the trees. Mamu proved good inspiration for Ting San, who has come on leaps and bounds in her jungle training. These two orangutan often spent nights out in the jungle too, though Ting San was far less keen on this experience than Mamu. Occasionally, where simple day trips were planned, Mamu would decide to remain out in the jungle over night, meaning her keepers regularly spent unscheduled nights in the forest close to her.



Since November 08, Mamu and Ting San have been spending one week a month at the Piers Mott ranger station, built by volunteers in Kubah National Park, about a 2km trek from the centre. Keepers have been able to stay in (relative) comfort in this building, while the orangutan explore the surrounding jungle both day and night, being fed at the neighboring feeding platform built by volunteers in October 08.

This year, Mamu has been showing increasing reluctance to return to the centre at the end of her periods of training. Mamu has certainly been ready for release for a number of months - she was being held back to fulfill a role of teacher for both Ting San and Doris, who is widely lacking in knowledge of jungle survival. However, Mamu obviously tired of this role, and after one week at the ranger station in April, decided that she would be happier to remain in the jungle. This site had been prepared for exactly this purpose, so it seemed as good a time as any to leave her out.



Both keepers and volunteers have been making daily excursions to the feeding platform by the ranger station to ensure Mamu will always be able to feed, should she not be able to find enough food in the trees. She is certainly missed at the centre, by none more than Doris who had formed a very close relationship with her. However for us, though it is strange not to see her on a daily basis, the knowledge that she is brachiating through the rainforest by day, foraging for natural foods and nesting in the treetops at dusk, more than compensates for her absence. Indeed, it is exactly what we have been working so hard to achieve, and the release of one makes us all the more determined to give her some company in Kubah.

Labels: aman, borneo orangutan, great orangutan project, kubah national park, matang, orangutan, orangutan mother, orangutan release, Orangutans and Rehabilitation

Aman is recovering very well after being the first adult orangutan ever to have cataract surgery performed on him. The vets checke up on him this morning and everything is fine. Aman will now have to stay indoors for a week ot two whilst he recovers. It is improtant to keep him confined so that it is easy to check up on him, to apply his daily eye drops and to avoid exposure to direct sunlight.

The vets had to use an enormous amount of drugs to keep him unconscious during the operation so he slept for a few hours afterward the operation and woke up feeling very groggy. He has been sitting around feeling sorry for himself, closing his eyes some of the time but thankfully he has not been rubbing his eyes so all should go well. The vets will return again on Sunday for a final check up before returning to South Africa.

He has been looking around at things which is a new behaviour and we are sure that his sight has returned which is fantastic news. Aman celebrated the successful operation with a fresh and tasty dragonfruit.



Aman during his operation - on the left is a clear eye, on the right the opaque lens from the cataract is visible.

The operation was sponsored by the Orangutan Appeal UK, with volunteer donations going towards Aman's aftercare.

Labels: aman, cataract, Matang and local community education, matang wildlife centre, orang utan, orang-utan, orangutan diary

The Great Orangutan Project made it possible for the world's first cataract operation on an adult orangutan yesterday. With funding for the operation coming from the Orangutan Appeal UK, and lengthy preparation from Keith Lloyd and Caroline Bellhouse and other GOP team members, Aman was operated on by two world-class experts.

It was a tense time but incredibly awe inspiring. At first Aman was moving about as Dr Stegmann was trying to insert a line into Aman's arm to give him steady dosage of drugs, That freaked people out somewhat as a large male orangutan started to wake up surrounded by the operating team and the press core, but they soon got him to sleep and then Dr Izak started the operation itself.



Ultrasound was used to disperse the cataract. The lens is like a jelly covering and crystals can start forming onto it. As they coalesce, they form into one continuous layer we know as a cataract. All it takes is sound waves to move the crystals off the lens and into the fluid of the eye. The fluid is then sucked out and new clear fluid injected. This is what happened for Aman and he is now recovering well.

We will know whether he will see very shortly and keep you updated.

Labels: aman, cataract, Matang and local community education, matang wildlife centre, orang utan, orang-utan, orangutan diary