Provide your resident non-migrating songbirds with a clean, cozy and safe place to rest and lay eggs, and they'll be content to call your property home for many seasons to come. This new and innovative device adds an extra layer of protection to any birdhouse. Made of strong, weather-resistant plastic, our protector quickly and easily attaches to any house, and protects inhabitants from common predators, such as jays, crows, grackles, squirrels, cats and raccoons. Specially designed to elongate the entrance, making it impossible for the larger birds to enter, or the non-flying predators to reach in and grab the tiny eggs or vulnerable young birds. Approved by both the Humane and Audubon Societies of America, it protects many species, including bluebirds, chickadees, nuthatches, swallows, titmice, woodpeckers and wrens. Made in the U.S.A. 6"H x 3"W x 6"D. Backyard birding is a wonderful way to enjoy the beauty of nature while providing birds with a much-needed refuge from the cold weather, storms and predators. When choosing a nesting house, consider the birds you'd like to attract to your property. Different birds have different housing and site requirements. No matter which species make their homes on your property, it is important to give them a safe home in which to lay their eggs and protect their young. Check out our entire line of backyard birdhouses and birding accessories.