Abstract: A pair of rotatable wings are slidably and rotatably received and secured on the axle of a bracket carried by a water fowl decoy to extend laterally outward from the decoy body. The wings have a series of circumferentially spaced blades which are shaped to cause rotation of the wings when subjected to a slight breeze and produce an alternating visual signal upon rotation. The bracket may be releasably attached to the decoy or molded into the decoy body during manufacture.