This precisely hand-crafted nestbox is perfect for bluebirds or tree swallows. Easily opened for seasonal cleaning, a single pin on the lower right, in the front can be twisted downwards, then apply slight pressure to the screw at the top of the hole, and the lower portion pops open. To lock, simple twist the pin left. Providing this Peak Nestbox in your backyard will bring you seasons of enjoyment as you watch these beautiful birds raise their young. Its good practice to have them up and ready by March for bluebirds and May for swallows.