Classic Brands Squirrel X-2 Squirrel Resistant Bird FeederAttract more birds with the Squirrel X Squirrel Resistant Feeder system! Feed birds (not squirrels!) with the revolutionary Squirrel X2 squirrel resistant bird feeder! If a squirrel tries to feed on any of the 2 spring loaded perches, the X2s integrated design shuts every port simultaneously. And if a squirrel tries to hang from the top, the X2s hinged roof tilts under the weight of the squirrel, closing both ports to stop racketeering rodents right