Groups the seabirds according to the different aspects of their behaviour, making revealing comparisons and contrasts between them. Introductory chapters on classification, distribution, form and function show how seabirds are related to each other and to other birds, how ocean currents, winds and climate dictate where they breed and winter, and how form relates to feeding and flight. A comprehensive gazetteer details some of the best seabird-watching sites in Western Europe.