US Patent 7930989 Bird repeller and method of assembly

Assembly for repelling birds from a selected area and method of making it. A rotor is assembled from a plurality of identical fin panels and rotatably mounted on a supporting pole within the selected area. Graphic designs comprising bird scaring holographic and/or diffractive images may be placed on the pole and/or rotor to simulate movement even when the rotor is stationary. The fin panels may be transparent and reflective to project light beams between and away from rotor surfaces. Outwardly projecting fin segments and a rotor barrel with vents are responsive to wind currents to rotate the rotor and generate bird repelling noises and visual effects.