Tony Estrella is PhD student in the Biological Psychology department at The University of Michigan and is advised by Dr. Thore Bergman. He’s a Southern California native who attended The University of California, Santa Cruz were he completed his B.A.s in Psychology and Biological Anthropology. Tony is broadly interested in the evolution of social cognition, vocal communication, and within and between group-dynamics. Previously, he studied termite fishing techniques, tool use, and material culture among eastern chimpanzees (Pan troglodyte troglodyte) of the Issa Valley in Tanzania. His current study species are white-faced capuchin monkeys (Cebus imitator) of the Taboga region in Costa Rica, where he collects vocalization and behavioral data to better understand how home range peripheries and core zones elicit varied behaviors in focal groups as a function of out-group pressure differentials. When not stalking monkeys with his recorder, Tony enjoys hiking and backpacking, going to beer gardens in spring (which he believes is a myth in Michigan’s perpetual tundra), likes watching new movies, and enjoys reading the accounts of past explorers before him.