These felt birdhouses are made from sustainable materials by artisans in Nepal. These birdhouses are made in a fair trade production center are designed to be both stylish and practical. Every house features a unique design and easy to clean access button so that once a bird is done nesting for a season you can clean out the debris from the old nest. The diameter of the entrance is 1.25" and is great for titmice, nuthatches, wrens, downy woodpeckers, tree swallows and bluebirds.