WhirlyBird Repeller "Pro" Bird Repeller "Pro" in the shape of a bird of prey, that spins, wobbles and reflects light. Discourages birds from perching, roosting and nesting. Produces constantly changing conditions that helps keep birds from becoming acclimated. Made in the USA and successfully tested and used by the U.S. Coast Guard. Uses wind and sunlight, and is environmentally friending and sustainable.Please see our WhirlyBird "Breeze" model for areas with lighter, intermittent wind.