Songbird Essentials All Weather Feeder-Squirrel Proof Cage The All Weather Squirrel Cage accessory is to be used with either the 4 Quart or the 6 Quart All Weather Feeders All Weather Feeder 4 Qt or 6 Qt feeders sold separately The Squirrel Cage accessory prevents squirrels, grackles, doves and other large birds from getting to the seed while still permitting cardinals to feed Dependability, and durability, the best in the industry The design of this product is very exquisite and beautiful