It is to be expected that some research workers will always like to watch animals, while others will prefer cathode ray oscillographs; and that, of those who study behaviour, some will crouch over rats in problem boxes while others lie in bogs peering through a binocular. This is an inevitable, and welcome, consequence of human polymorphism. Author intention has been primarily to present some of the principles of ethology, That is, of the study of behaviour. The ...
