I have two primary lines of research. The first involves understanding how behavior impacts individual fitness in natural populations of large mammals. This research is based on detailed information about individual behavior and life histories, and is focussed primarily on the savannah baboon population in Amboseli National Park, in southern Kenya. The second involves the relationship between genes and behavior; how does behavior affect population genetic structure, and how do genes influence behavior? My current research projects include: An analysis of the major histocompatibility complex (MHC) and its relationship to mating behavior in two baboon populations. Two microsatellite studies, one of the Amboseli baboon population and one of the well-studied wild elephant population in Amboseli.