What is the lecture mainly about？A．Methods of observing unusual animal behaviorB．A theory

What is the lecture mainly about？

A．Methods of observing unusual animal behavior

B．A theory about ways birds attract mates

C．Ways animals behave when they have conflicting drives

D．Criteria for classifying animal behaviors

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！