Konrad Zacharias Lorenz was an Austrian zoologist, animal psychologist, ornithologist and Nobel Prize winner. He is often regarded as one of the founders of modern ethology, developing an approach that began with an earlier generation, including his teacher Oskar Heinroth. Lorenz studied instinctive behavior in animals, especially in greylag geese and jackdaws. Working with geese, he rediscovered the principle of imprinting in the behavior of nidifugous birds.

He wrote numerous books, some of which, such as King Solomon's Ring and On Aggression became popular reading. In later life his interest shifted to the study of man in society.