POWERFUL SEED RETAINER: Spare slots are easier to clean and reuse. It reduces the risk of the wild bird feeder falling during removal. Simply remove the bottom seed box to easily clean up residue. Squirrel-Proof Window Bird Feeders: Squirrels wont climb glass! By attaching your bird feeder to your window, squirrels wont have a chance to steal the seeds! You'll never have to worry about squirrels stealing your base again! PERFECT QUALITY BIRD WATCHING GIFT: Clear window bird feeder is perfect for feeding chickadees, cardinals and more. Sit leisurely in your bedroom or on your patio and admire your garden and backyard bird neighbors. The birds in the aviary will eat for a while, and the pet cats will play together. A gift for parents who have it all, a gift for grandparents, a gift for elders.