Audubon Entities Bird Guardian Screw-on Birdhouse Protector

Features: Keeps your birds out of reach from opossums, raccoons, squirrels, and more. Wide flange covers entrance holes damaged by squirrels and woodpeckers. Attaches easily with the included mounting screws to any birdhouse. Protects, eggs, baby birds, and even adult birds in a birdhouse. Extends the entrance so that predators cannot reach inside. A patented, tested, and approved product. Made in the USA.