My Spy Birdhouse?gives you an up-close view of our fine, feathered friends! Features a clear, acrylic window with 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. Made of durable, weather-resistant materials. 7-3/4" x 6-1/4" W x 4-1/2" L. For ages 3 and up.