Heini Hediger

Heini Hediger was a pioneering Swiss animal psychologist and director of the Dählhölzli Zoo in Bern, known for his groundbreaking research on animal behavior in captivity. In 1939, he conducted an experiment by releasing 150 budgerigars to study their behavior and attachment to captivity, which sparked significant public debate. His work laid the foundation for modern zoo biology, and he later directed the Basel Zoo and the Zurich Zoo, becoming one of the most influential figures in the field.