As a general rule of biology, migratory species are less 'aggressive' than sedentary ones. There is one obvious reason why this should be so. The migration itself, like the pilgrimage, is the hard journey: a 'leveller' on which the 'fit'… — Bruce Chatwin Copy Share Image
As a general rule of biology, migratory species are less 'aggressive' than sedentary ones. — Bruce Chatwin Copy Share Image
