Secret Bird Watcher Birdhouse;

A fun and safe way to watch baby birds growing. Secret Bird Watcher Birdhouse features a 2-way mirror film on one side-you see birds inside but they can't see you. Safely attaches to any glass surface with included suction cups so you can observe mama birds building their nest, hatching their eggs and feeding their young from inside your home. Easy to assemble. Perfectly sized for common backyard birds.