When people talk about the pioneers who changed our understanding of great apes then the three women stand out: Dian Fossey, Dr. Jane Goodall and Dr. Biruté Galdikas.
Together they became known as the Trimates, a name connected to the three great apes they studied in the wild.
Dian Fossey — mountain gorillas
Jane Goodall — chimpanzees
Biruté Galdikas — orangutans
Their work was supported by paleoanthropologist Dr. Louis Leakey, who believed that studying our closest living relatives could help us understand human evolution and behavior.
Today their legacy continues to influence wildlife research and conservation across Africa and beyond.
The Trimates were three pioneering female researchers who spent decades studying great apes in their natural habitats.
Jane Goodall began her chimpanzee research at Gombe in Tanzania in 1960, Dian Fossey established the Karisoke Research Centre in Rwanda in 1967 to study mountain gorillas while Biruté Galdikas began her long-term orangutan research in Borneo in 1971.
Their studies helped challenge the idea that complex behavior belonged only to humans.

Who Were the Three Trimates? Dian Fossey's picture
Dian Fossey became one of the world's best-known mountain gorilla researchers.
In 1967, she established the Karisoke Research Centre in the Virunga Mountains of Rwanda. She spent years observing gorilla groups, documenting their social relationships, behavior and daily lives.
Fossey also became deeply involved in gorilla protection. Her work brought international attention to poaching and the threats facing mountain gorillas.
Learn more in Dian Fossey and the Mountain Gorillas.

Who Were the Three Trimates? Dr Jane Goodall's picture
Jane Goodall began her landmark chimpanzee research in Gombe, Tanzania in 1960.
One of her most famous discoveries was that chimpanzees make and use tools. Her observations challenged long-held assumptions about the differences between humans and other animals.
Her research later developed into a much wider conservation and education movement through the Jane Goodall Institute.
Read more about Jane Goodall and Chimpanzees

Who Were the Three Trimates? Biruté Galdikas
Biruté Galdikas became the third member of the Trimates.
Her work focused on wild orangutans in Indonesian Borneo where she carried out one of the longest-running studies of orangutans in their natural habitat.
Her research helped expand scientific understanding of orangutan behavior, ecology and conservation.
The phrase “Leakey's Angels” is another name used for Fossey, Goodall and Galdikas because of their association with Louis Leakey and his support for their field research.
Leakey believed that studying great apes could provide valuable insights into human evolution.
The three researchers took that idea into three very different environments and built long-term relationships with the animals they studied.
Their work helped change the way scientists viewed great apes as they documented:
Complex social relationships
Individual personalities
Tool use
Family bonds
Communication
Social learning
Cooperation
Competition
Emotional behavior
Their work also helped bring conservation into the public conversation.
Uganda was not the original research location of Fossey or Goodall.
However, their legacy is highly relevant to travelers visiting Uganda today.
Uganda is home to mountain gorillas in Bwindi Impenetrable National Park and Mgahinga Gorilla National Park and It is also one of Africa's major destinations for chimpanzee experiences particularly in Kibale National Park.
This gives travelers an opportunity to experience the forests and great apes that continue the conservation story they helped bring to the world.
Yes, Pearl Nature Holidays can arrange Uganda safaris combining:
Gorilla trekking in Bwindi
Gorilla trekking in Mgahinga
Chimpanzee trekking in Kibale
Chimpanzee habituation experiences
Wildlife safaris
Cultural experiences
Birding and forest walks
Uganda Wildlife Authority states that gorilla tracking takes place in Bwindi and Mgahinga, while Kibale offers chimpanzee tracking and habituation experiences.
The Three Trimates were Dian Fossey, Jane Goodall and Biruté Galdikas who studied mountain gorillas, chimpanzees and orangutans respectively.
The name refers to their connection with paleoanthropologist Louis Leakey who supported their great ape research.
Fossey's best-known long-term research was conducted in Rwanda's Virunga Mountains at the Karisoke Research Centre.
Goodall's landmark long-term study began at Gombe in Tanzania however Uganda offers important chimpanzee experiences today especially in Kibale.
Yes, Uganda offers gorilla trekking in Bwindi Impenetrable National Park and Mgahinga Gorilla National Park.
The story of the Trimates connects science, wildlife and conservation across Africa and Asia.
For travelers today, Uganda offers an opportunity to experience two of the great ape species central to this story: mountain gorillas and chimpanzees.
Pearl Nature Holidays can build a Uganda itinerary around gorilla trekking, chimpanzee experiences and wider wildlife adventures talk to one of our consultants on: info@pearlnatureholidays.com