Darcy is interested in reciprocal signaling in mutualistic interactions between cleaner shrimp and client fish. In particular, she hopes to understand the ecological and behavioral context of client signaling, which takes the form of rapid color change. Her dissertation research focuses on establishing the signaling role of client color change, investigating the potential trade-offs associated with color change, and placing rapid physiological color change in client fishes in its evolutionary context. She received her A.B. in Ecology and Evolutionary Biology from Princeton University, where she studied hummingbird foraging behavior.