Woodlink"s cedar bluebird house is ornithologically designed to attract bluebirds. The house features and easy open side to make cleaning easy. The blue painted roof and etched design front make this house even more attractive. The 9/16th-inch hole is ideal for western or mountain bluebirds. The bird house is constructed of reforested, kiln dried, inland red cedar and screws. The birdhouse is predrilled for easy mounting with screws which are included. Made in the USA.