S&K Manufacturing Gourd HouseThe S&K Manufacturing Gourd House is a welcoming home for purple martins, tree swallows, or blue birds. This item comes in a pack with two houses. The nesting area allows for quick drainage, keeping the nest dry. The interior floor is textured for good traction. Openings are round and crescent and each has a plug. The Gourd House includes a large oval port for cleanout and inspection. The hanger top turns so you can determine the direction the house faces.