Sponsor a gibbon

With your donations we can give a second chance to our pensioners!

You will receive news of your protege by mail, every 4 – 6 weeks.

Your name will appear on the gibbon’s page on our website.

You can sponsor a gibbon completely either with 280 €/year or with 23 €/month or partially.

In case of an animal’s death, your donations can be attributed to another gibbon or used for other expenses depending on your wishes.

If you would like to donate in someone else’s name, please send us their email so that we may send them news of their fostered animal.

Our email:

Thank you for your support!

Donate once

The maximum amount per gibbon per year is 280 €.

Sponsoring lasts 12 months starting the day we receive your donation. An email will be sent to you after 11 months to see if you will renew your help.

Check on the gibbon’s card how much is still needed. The amount is indicated above each photo. If you want to give 80 €, you have to have at least 80 € left to collect, otherwise the total will exceed 280 € per year.

Donate each month

You can sponsor from 5 to 23.33 € per month.
For example 5 € a month equals 60 € / year

With this formula, your donations are made monthly until you decide otherwise. You become a Friend of Kalaweit and we offer you the membership fee.

Check on the gibbon’s page how much is still needed. The amount is indicated above each photo. Do not make donations exceeding the amount left to purchase. Ex: If you would like to make a 10 € monthly donation, amounting to 120 €/year, make sure that there is at least 120 € left on the gibbon’s page.




27 years old

Gibbon de Muller (Hylobates muelleri muelleri)

Left to sponsor: 90

Sponsored by Guillaume Baril, Véronique Costeux

July 2024

Boyke is fine.
He is always with his partner Liar.
Boyke is active and eat well his fruits.

March, 5 2020

It's a sad day for Boyke and Liar, Boly was dead. She has been sick for a week.
Boly has cold and cough.
We try to give her treatment but sadly Boly did not survive.

January 2020

Boyke is fine. He is always with his partner Liar and his daughter Boly.

August 2017

Boyke and his family are doing well. Boyke likes to swing and hang in at the top of the cage.

March 2015

Boyke, Liar and Boli are fine.

June, 21 2014

Liar give birth to a baby gibbon. Liar and her baby are just fine. We called her baby Boli.

Avril, 9 2011

Boyke is now with a female gibbon named Liar. They are fine.

March, 25 2011

Sad day for Boyke... his partner Otong was dead because of disease.

March, 24 2010

Boyke and Otong have been transfered to our new center in Pararawen, Muara Teweh, Kalimantan Centrale.

March, 13 2009

Boyke is now with a female gibbon named Otong. They are fine.
Boyke was with a female gibbon named Yoyo. But his relationship with this female was not good because they intimidate each other.


Boyke is a male gibbon Hylobates Muelleri muelleri, a specy that can be found in southeast Kalimantan, approximately south of the Mahakam river and west of the Barito river.
Year of birth (estimation) : 1997.
Medicale examination : Boyke is clean.
Boyke was rescued in march, 28th 2004 in Palangkaraya.
History :
One day we received a phone call, a man has two gibbons in his house. He wanted to give us his gibbons that he has kept like pet animal for years and years.
Now at Kalaweit, Boyke and his family have a chance to be released in the forest. But he must first spend many years of rehabilitation at our center.
Notes ;
Pararawen Conservation Center and Sanctuary, Muara Teweh, Kalimantan Centrale.

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