Droll Yankees Observer Window FeederThe Observer Window Feeders open, clear construction allows for unobstructed and up close views of birds as they feed from your window. This feeder is ideal for sparking childrens curiosity and helping them learn about their backyard birds. See birds up close outside your window open sides and clear, UV stabilized plastic construction provide an unobstructed view 3 strong suction cups attach the Observer right to your window Holds 2 cups of seed,