Enjoy more birds and more types of birds than at any other kind of feeder - and keep away squirrels! Duncraft’s new ingenious Squirrel-Blocker™ screening system allows birds to feed easily but stops squirrels from pilfering - their paws and mouths just can’t pick up the seed! Durable squirrel resistant nylon resin tray has ample drainage, comes with wire hanger and 1" post-mount capability. Designed specifically for use with black-oil sunflower seed only. Added benefit: at a platform feeder you’ll see bird behaviors you don’t see at narrow hopper ledges and little perches – mate-feeding, courting, chasing ... fascinating!