British wildlife conservationist Jane Goodall , who earned worldwide recognition as a leading expert on primates, died on Wednesday morning, the non-profit organisation she founded said. She was 91 years old.

She died of natural causes in California while on a speaking tour of the United States, the Jane Goodall Institute said in a social media post.

“Dr Goodall’s discoveries as an ethologist revolutionised science, and she was a tireless advocate for the protection and restoration of our natural world,” the institute said.

Goodall, born in 1934, developed an early fascination for wildlife that spurred her to move from England to Africa to understand the behaviour of chimpanzees, and then become a global advocate for ecological conservation.

She grew up in the English town of Bournem

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