Ethological studies of sign stimuli and motivation
Tinbergen's four questions: an appreciation and an update: Trends in Ecology & Evolution
Ethological studies of sign stimuli and motivation
PDF) Kruuk, H. Niko's nature, the life of Niko Tinbergen and his science of animal behaviour Kruuk, H. Niko's nature, the life of Niko Tinbergen and his science of animal behaviour .
Nikolaas "Niko" Tinbergen (left) and Konrad Lorenz (right)
Niko's Nature: The Life of Niko Tinbergen and His Science of Animal Behaviour: Kruuk, Hans, Tinbergen, Niko: 9780198515586: Books - Amazon