1. The related development of behavioural ecology has also helped transform ethology. 2. His early work included major contributions to population and behavioural ecology . 3. Adaptation is the central unifying concept in behavioural ecology . 4. Elaborate sexual displays and posturing are encountered in the behavioural ecology of animals. 5. These studies form an important part of the foundation for the modern discipline of behavioural ecology . 6. In addition to lecturing, he researches the behavioural ecology of passerine birds, especially Robins. 7. It uses simple language to explain recent advances in behavioural ecology and sociobiology to a general audience. 8. Predator-prey interactions are an introductory concept into food-web studies as well as behavioural ecology . 9. Hypotheses posited in behavioural ecology are generally based on adaptive principles of conservation, optimization, or efficiency. 10. Parker's work played a part in this shift and in the early development of behavioural ecology .