A lifting system for a window covering has a movable shaft disposed within a cradle that is held within a head rail. The movable shaft has an end portion and a lift cord wrapping portion. A lift cord is connected to the movable shaft. A transition member is disposed between the end portion and the lift cord wrapping portion. The transition member acts as a ramp to facilitate migration of the lift cord to the lift cord wrapping portion once bird nesting has occurred.
