Shoals, swarms, flocks, herds-group formation is a widespread phenomenon in animal populations. It raises several interesting questions for behavioral... ecologists. Why do animals form and live in groups, and what factors influence the ways in which they do this? What are the costs and benefits to an animal of group living? How are these influenced by ecological factors? The authors familiarize the reader with cutting-edge ideas on the ecology and evolution of group-living animals, and detail fascinating case studies demonstrating them in action.

The first “participatory” introduction to sociology textbook, The Real World is the perfect choice for today’s students.With a clever mix of... popular culture, everyday life, and extensive student activities, The Real World fully realizes sociology’s unique ability to stimulate students intellectually as well as resonate with them personally.