There are few published reports of Eastern Bluebirds (Sialia sialis) taking vertebrate prey or provisioning their young with vertebrates. We report finding a dead flat-headed snake (Tantilla gracilis) in an Eastern Bluebird nest. Flat-headed snakes feed primarily on soft-bodied invertebrates; thus, it is unlikely that the snake was attempting to depredate the bluebird nestlings. Moreover, flat-headed snakes are fossorial and rarely occur in open habitats. Therefore, the snake was most likely captured by one of the adult bluebirds and brought to the nestlings as a food item.