The article describes the dietary habits of the Coachwhip snake, Masticophis flagellum. Topics include the snake's primary diet, which mainly consists of lizards and occasionally other reptiles, mammals, insects, and birds; an observation of M. flagellum preying on a Verdin (Auriparus flaviceps) nest in Pima County, Arizona, where it consumed nestlings; and details about the unusual nest placement that may have increased vulnerability to snake predation.