It's like prefab modern for birds! Ships to you flat packed in a paper envelope. Follow a few simple steps, you've created a sweet eco shack for your outdoor feathered friends. Made of water repellent cardboard, this foldable birdhouse measures a roomy 10" tall. The hole size will accomodate many different varieties. There's even a happy perch included. Enviromentally friendly, your birds will thank you!