Designed for first-year graduate students in ecology, evolution, and behavior. Continuation of the study of why animals behave the way they do. Continued overview of both the proximate and ultimate issues of animal behavior, how it is acquired and regulated, and how it evolved. Emphasis on integration of proximate and ultimate analyses in the various domains in which animals behave. Second part of a two-semester sequence. Three lecture hours and one discussion hour a week for one semester. Biology 384D and 389E may not both be counted. Prerequisite: Graduate standing, Biology 384C, and consent of instructor and the graduate adviser.