Skip to content
  • Who we are
    • About Us
    • Our Partners
    • Contact us
  • What we do
    • We Learn
    • We Protect
    • We Restore
    • We Inspire
  • Act Now
    • Donate
    • Fundraise for us
    • Partner with us
    • Field Courses
    • Shop & Support
    • Back a Campaign
  • Stories
  • Login
  • Who we are
    • About Us
    • Our Partners
    • Contact us
  • What we do
    • We Learn
    • We Protect
    • We Restore
    • We Inspire
  • Act Now
    • Donate
    • Fundraise for us
    • Partner with us
    • Field Courses
    • Shop & Support
    • Back a Campaign
  • Stories
  • Login
donate now
  • Wildlife
  • | Written by Eci

A New Generation of Critically Endangered Orangutans

Gracia is a 40-year-old wild female orangutan who lives in the Sebangau National Park. She is a familiar face to many of BNF’s researchers, but there is something odd about her behaviour lately…

Abdul Azis, BNF Indonesia’s Orangutan Coordinator, watched Gracia with suspicion. Her behaviour was different, he thought. Azis had known Gracia and her family for several years and, after four hours of tracking her movements through the dense forest, his suspicions had grown even further.

An orangutan’s long call echoed out from a burnt patch of forest. This area had once been Gracia’s home range before it was consumed by wildfire in 2015, displacing her and her then-infant son Gara. At this sudden sound, Gracia turned away as if to avoid the male orangutan loudly advertising his presence. 

“I suspect that Gracia is pregnant again, since she is behaving more and more like a pregnant mother. Tomorrow we will try to do a pregnancy test with her urine,” Azis informed fellow scientists Jalil and Jali, who had joined the orangutan follow that day.

The next day, the team waited for Gracia to urinate before swooping in to collect any salvageable drops from dry leaves on the forest floor. It was unglamorous work, but the pregnancy test results filled them with hope. 

“The results are two lines, indicating a positive, but one is a bit faint. Next month, we will do another pregnancy test, just to be sure,” Azis told his teammates.

He explained that if Gracia was pregnant, this would be her fourth pregnancy since 2003, when Dr. Helen Morrogh-Bernard first began recording orangutan pregnancies. As for Azis, this would be the second pregnancy of Gracia’s he sees through development. 

The pregnancy test result of Gracia
Photo by Abdul Azis | BNF

“I am very happy and touched to be able to follow her progress directly. This is Gracia’s fourth child after Georgia, Gretel and Gara, so she has done a fantastic job of raising the next generation of Bornean orangutans, one of Indonesia’s most important umbrella species,” he said, smiling. 

See also: Orangutan family tree!

Azis added that, besides a confirmed test result, pregnancy can also be apparent from the orangutan’s behaviour – for example, avoiding males’ long calls, since she has already mated. 

“When female orangutans are ready to mate, they are usually more aggressive in their search for males and always respond to the sound of long calls,” Azis explained.

There are also physical signs of pregnancy, such as a growing belly and becoming less active.

“Recently, Gracia’s average travel distance when searching for food is only about 200 meters per day. Growing a baby is tiring work, so she’ll need lots of rest,” he continued.

Azis appealed to community members to help protect this vital orangutan habitat, which is still under threat from forest fires like the one that destroyed Gracia’s home range eight years ago. The loss of their forests leads to food scarcity, resulting in increased fighting over resources. 

Another of BNF Indonesia’s orangutan researchers, Ristafatul Ulya, explained that the day-to-day behaviour of pregnant orangutans changes dramatically, including the way they move through the trees. Normally, orangutans brachiate, swinging from branch to branch with big loping movements; however, pregnant females move more slowly, over shorter distances.

“There are other physical changes that develop over the course of pregnancy too, such as elongated nipples as the female prepares to breastfeed her newborn,” he summarised.

Gracia, the female orangutan in Sebangau National Park, already has a big belly with her fourth pregnancy
Photo by Vera Dwi Safitiri | BNF

Written by Yohanes Prahara, Content Creator and Media Liaison 

Leave a Reply Cancel reply

You must be logged in to post a comment.

  • August 19, 2023
3 min read
Share to:
Categories:
  • Wildlife
MAKE THE CONNECTION.

Get updates from rainforest, job opps, ways to acts and more with our monthly(ish) action letter. 

"(Required)" indicates required fields

Name(Required)
This field is for validation purposes and should be left unchanged.

Related Posts

  • Conservation, Rainforests, Wildlife
  • - August 24, 2024

Baby Orangutans: A New Hope

Earlier this week we shared the exciting news that three new baby orangutans have been born close to one of our camps in the last

Read more

  • Wildlife
  • - October 26, 2023

Good News: Gracia Has Given Birth

This morning the Orangutan team search for the whereabouts of Gracia, an orangutan in her 40s. In our previous article  it was reported that Gracia

Read more

A Close Ecounter with Gara
  • Wildlife
  • - November 14, 2022

A Close Encounter with Gara

As the year draws to a close, the rainy season begins in Indonesia. For several months, the pounding rain becomes a near-constant backing track, and

Read more

  • Wildlife
  • - October 31, 2022

Halloween: Meet Borneo’s Creepiest Wildlife!

Halloween 2022: Borneo’s Creepiest Wildlife! It’s Halloween! To celebrate, let’s usher in the spooky season by getting to know a few of Borneo’s creepiest jungle

Read more

  • Wildlife
  • - August 19, 2022

ORANGUTANS AND THEIR INTELLIGENCE

Orangutan is an exotic primate that always attracts the world’s attention. The species was first described scientifically in 1758 by Carl Linnaeus. They are the

Read more

  • Cameras for Cats, Scientific Research, Wildlife
  • - April 27, 2022

Introducing the 5 wild cats of Kalimantan

As you might have read over the last few weeks, Borneo is home to five species of wild cat: the bay cat, Sundra clouded leopard,

Read more

  • Conservation, Wildlife
  • - April 18, 2022

The Month of Love: Getting Reacquainted with Gracia and Gara

February 14th is marked by annual celebrations around the world as people gather their loved ones and exchange gifts to commemorate Valentine’s Day. This year,

Read more

  • Education, Wildlife
  • - January 31, 2022

Popy’s Adventure #3

POPY’S ADVENTURE #3 POPY MEETS OBO As sunlight fell through cracks in the trees and the morning’s dew began to evaporate, Popy and her mother

Read more

  • Conservation, Wildlife
  • - January 28, 2022

Captivated by Charismatic Red Monkey

DISCOVER MORE ABOUT ONE OF BORNEO’S MOST CHARMING, YET UNDERAPPRECIATED, PRIMATES It was early morning and temperatures were low at the Peat Forest Natural Laboratory

Read more

  • Wildlife
  • - May 25, 2021

The ‘Ghost Crocodile’ from Kalimantan

Written by, Yohanes Prahara, Content Creator and Media Liaison BNF Indonesia The landscape of Central Kalimantan is mostly peat swamp forest, encompassing many rivers and

Read more

  • Wildlife
  • - January 30, 2021

Primate Selfies Lack Context and Can Harm Conservation Work

Photos or videos can draw the attention of millions of people to non-human primate conservation and welfare. However, if the context of the images is

Read more

  • Wildlife
  • - August 4, 2020

The Displaced Native Inhabitants

Two more unique species from Borneo have been included in the International Union for Conservation of Nature (IUCN) Red List 2020 namely the Endangered Bornean

Read more

CASH IS A FORCE FOR GOOD; FUND ACTION ON ALL FRONTS
DONATE NOW

We collaborate to protect Borneo’s rainforest, one of the most important on Earth, with science, community-led action and education; for a world where people and nature thrive.

  • Home
  • About Us
  • Contact us
  • Login
  • Donate
  • Home
  • About Us
  • Contact us
  • Login
  • Donate
  • Annual Reports
  • Policies
  • Annual Reports
  • Policies
Facebook-f Youtube X-twitter Instagram Linkedin-in
© 2025 Borneo Nature Foundation. All rights reserved.