Billy Lee Lasley

1978 Laureate, Science & Health
United States, Born 1941

Project Goal

Develop a non-invasive method for determining the sex of endangered birds that will help to establish breeding programmes

Location: United States

"This type of research does not attract the same amount of money as research on humans or commercially valuable animals."

Billy Lee Lasley’s invention of a non-invasive method for determining the sex of birds — designed to help protect endangered species such as eagles — has slowly been adopted by researchers around the world. Perhaps more importantly, his work has proved to have other uses, including monitoring the reproductive health of women exposed to chemicals in the environment.


amount, in Swiss francs, of Billy's Rolex Award, which he then donated to the San Diego Zoo's research programme.

Other 1978 Laureates