These are Eastern Bluebird and Titmouse birdhouses made from recycled vinyl and aluminum. They are super durable and very effective if hung at a minimum height of 4ft. On the bottom is an easy cleanout with a slide to drop the nest out when the bird is finished with it. These do not rot and fall apart. If you hang them snug to a tree or wooden post they will last a very long time. I have one 6 years old with no sign of wear and tear and birds use it every year. I have two sizes and a few different colors. Max order of 5 if you want several because they take time to make. Email or call if you are interested. If I do not answer phone I may be swamped with houses and will get back to you ASAP.