a method of making an assembly for repelling birds from a selected area , including forming fins and vents on a rotor and rotatably mounting the rotor on the distal end of a support member , the proximate end of which is adjusted to be fixed within the selected area . the fins and vents on the rotor arc responsive to wind currents to rotate the rotor and generate bird repelling noises and visual effects . the fins may include light reflective and / or other design indicia to enhance the visual effects . an electrical sound producing device may be mounted on the rotor for emitting the sound of a bird predator .