Biruté Galdikas, Last of ‘Leakey’s Angels,’ Dies at 79

The scientific community is mourning the loss of Biruté Galdikas, a pioneering primatologist and conservationist who dedicated her life to the study and protection of orangutans. Galdikas died on March 24, 2026, in Los Angeles at the age of 79 following a battle with lung cancer and pulmonary fibrosis. Her passing marks the end of an era, as she was the last surviving member of the renowned “Trimates.”

The Legacy of the Trimates

Biruté Galdikas was one of three women chosen by anthropologist Louis Leakey to study primates in their natural environments. Known as the “Trimates” or Leakey’s Angels, this group included Jane Goodall and Dian Fossey. Leakey sought observers who could provide deep insights into primate ethology to better understand early human ancestors.

While Goodall focused on chimpanzees and Fossey studied gorillas, Galdikas took on the challenge of studying orangutans. Together, these three women fundamentally changed the face of science, revealing the profound similarities between humans and great apes.

Pioneering Research in Indonesian Borneo

Galdikas’ journey into primatology began at the University of California in Los Angeles, where she studied psychology and zoology. After attending a lecture by Louis Leakey, she proposed a plan to study orangutans in the wild. This ambition led to the establishment of a research facility in 1971 within the Tanjung Puting Reserve (now a National Park) in Indonesian Borneo.

In honor of her mentor, Galdikas named the site “Camp Leakey.” Alongside her former husband, Rod Brindamour, she immersed herself in the rainforest, using her observations to form the basis of her PhD studies. Her commitment to the region was unprecedented. her work is recognized as the longest continuous study of any wild mammal in the world conducted by a single principal investigator.

Conservation and Global Impact

Beyond academic research, Galdikas was a fierce advocate for the survival of the orangutan. She co-founded the Orangutan Foundation International, an organization dedicated to the protection of these great apes and their dwindling habitats.

Her work shifted the global perception of orangutans, moving them from mere curiosities to recognized sentient beings requiring urgent conservation efforts. By documenting their behavior and social structures over several generations, she provided the scientific evidence necessary to drive international protection policies.

Key Takeaways: The Life of Biruté Galdikas

• Scientific Pioneer: One of “Leakey’s Angels,” she revolutionized the study of wild orangutans.
• Academic Foundation: Studied psychology and zoology at UCLA before launching her field research.
• Camp Leakey: Established a critical research hub in Indonesian Borneo in 1971.
• Conservation Leader: Co-founded Orangutan Foundation International to protect endangered primates.
• Historic Record: Conducted the world’s longest continuous study of a wild mammal by one principal investigator.

A Lasting Influence on Primatology

The contributions of Biruté Galdikas extend far beyond her data sets. By proving that humans could coexist with and learn from wild primates through patient, long-term observation, she paved the way for modern conservation biology. While the “Trimates” are no longer together, the framework they established for field research continues to guide scientists today.

Galdikas leaves behind a legacy of courage and curiosity, ensuring that the orangutans of Borneo have a stronger voice in the fight for their survival.