Bluebirds need a house with a hole 1.5” in diameter. Their houses are usually mounted in pairs, one for the bluebirds, and the other for house sparrows or tree swallows. One of the most popular styles of houses is the sparrow-resistant bluebird house. It’s specially designed to appeal to bluebirds and dissuade sparrows. Others come with viewing windows, nest lifts, or even a video camera inside! We have both basic and decorative bluebird houses in stock to suit all your bluebirds needs!