Niko Tinbergen - Simple English Wikipedia, the free encyclopedia
Samples | Ten Thousand Birds
Nobel Prize - Did you know Jan and Nikolaas Tinbergen are the only siblings to both be awarded a Nobel Prize? In 1969, Jan Tinbergen, aged 66, received the first Prize in
Founders of the field of Modern Ethology Konrad Lorenz Modern Ethology: the study of the evolution and functional significance of behavior. - ppt download
File:Lorenz and Tinbergen2.jpg - Wikipedia
Grant McIntyre | Niko Tinbergen | Slightly Foxed literary review
Understanding animal behavior: Niko Tinbergen's Four Questions - Global Animal Partnership