Emily Boehm (Ph.D. candidate) in Gombe National Park, Tanzania

Emily Boehm (Ph.D. candidate) in Gombe National Park, Tanzania

In Gombe National Park, Tanzania, Ph.D. candidate Emily Boehm (foreground) observes Bahati--a pregnant female chimpanzee who is also displaying an estrous swelling. Boehm's dissertation probes the adaptive value of these deceptive sexual signals.