This textbook helped to define the field of Behavioural Ecology.   In this fourth edition the text has been completely revised, with new chapters and many new illustrations and colour photographs. * Covers the influence of natural selection on behaviour an animal s struggle to survive and reproduce by exploiting and competing for resources, avoiding predators, selecting mates and caring for offspring, and how animal societies reflect both cooperation and conflict among individuals. Chapter 1. Natural Selection, Ecology and Behaviour.Chapter 2. Testing Hypotheses in Behavioural Ecology.Chapter 3. Economic Decisions and the Individual.Chapter 4. Predators versus Prey:Evolutionary Arms Races.Chapter 5. Competing for Resources.Chapter 6. Living in Groups.Chapter 7. Sexual Selection, Sperm Competition and Sexual Conflict.Chapter 8. Parental Care and Family Conflicts.Chapter 9. Mating Systems.Chapter 10. Sex allocation.Chapter 11. Social behaviours: altruism to spite.Chapter 12. Cooperation.Chapter 13. Altruism and Conflict in the Social Insects.Chapter 14. Communication and Signals.Chapter 15. Conclusion.References.Index.