Abstract: A bird nest box system is provided that includes a nesting enclosure, a moveable nest floor, and a floor movement mechanism that moves the nest floor between a lowered position and a raised position, the nest floor being mounted over the floor movement mechanism. The floor movement mechanism includes a driveshaft, a gear assembly coupled to the driveshaft and actuatable by rotation of the driveshaft, and a lift arm. The lift arm is actuatable by the gear assembly to rotate the nest floor toward a front opening of the nest enclosure. The gear assembly provides at least one gear reduction between the driveshaft and the lift arm.