A bird repellent system for a wind machine with propeller blades mounted to a propeller hub on a mast, each propeller blade having a propeller tip at a distal end of the propeller blade, and a bird repellant ribbon attached to the propeller tip, so rotation of the propeller blades generates a wind stream parallel to a ground surface, to impart an action to the bird repellant ribbon. The bird repellent ribbon can be made from a mylar type of plastic film, and have holographic reflective features. The propeller blades can also include one or more strips of a reflective material adhered to the propeller.
