Together with Konrad Lorenz, Niko Tinbergen is generally acknowledged as the founder of the young science of ethology. Professor Tinbergen has spent a lifetime of research exploring the behavior of many types of animals in their natural environments, and has founded centers of worldwide renown for research and teaching in the behavioral sciences, first in his native Holland and later at Oxford. His influence extends far beyond the borders of Europe and of zoology proper, and he has contributed substantially to international and interdisciplinary collaboration. Tinbergen's work has been...