I am a primate behavioral ecologist who investigates the behavior of our closest living relatives, the apes. My current research involves studies of an extremely large community of wild chimpanzees at Ngogo, Kibale National Park, Uganda. During the past 35 years, I have conducted fieldwork on the behavior of all five kinds of apes: gibbons and orangutans in Indonesia, gorillas in Rwanda, bonobos in the Democratic Republic of Congo, and chimpanzees in Uganda and Tanzania. In my work, I address questions about ape social behavior and communication. I am an Editor of Advances in the Study of Behavior and on the Editorial Boards of the International Journal of Primatology, Journal of Human Evolution, and Primates.