Woodlink"s Bluebird house is a traditional style bluebird house that is ornithologically designed to attract bluebirds. The bird house features an easy open front to make cleaning easy. The 1/2-inch hole is ideal for eastern bluebirds. The house is constructed of reforested, kiln dried, inland red cedar and chromate screws. The birdhouse is predrilled for easy mounting with screws which are included. Made in the USA.