| 1 | An evolutionary approach to animal behavior | 1 |
| 2 | Proximate and ultimate causes of behavior: how and why birds sing | 22 |
| 3 | The development of behavior: a focus on heredity | 50 |
| 4 | The development of behavior: a focus on the environment | 76 |
| 5 | The control of behavior: neural mechanisms | 114 |
| 6 | The organization of behavior: neurons and hormones | 154 |
| 7 | Adaptation and antipredator behavior | 182 |
| 8 | The evolution of feeding behavior | 214 |
| 9 | Choosing where to live | 248 |
| 10 | The evolution of communication | 280 |
| 11 | The evolution of reproductive behavior | 316 |
| 12 | The evolution of mating systems | 360 |
| 13 | The evolution of parental care | 394 |
| 14 | The evolution of social behavior | 420 |
| 15 | The evolution of human behavior | 456 |
