Patented squirrel buster technology is truly squirrel proof with over 500,000 happy customers confirming it!  When a squirrel climbs onto the feeder, its weight automatically forces the shroud down, closing access to the seed tray.  Squirrels are shut out but not harmed in any way.The patented seed tube ventilation system permits humidity and hot air to escape through vents at the top of the feeder.  The seed remains fresher and attracts more birds.  With several perches for perching birds, and a metal mesh shroud for clinging birds, you will find an enhanced level of bird activity with this product!  

Feeder holds 3/4 quart of seed.  It is easy to fill, easy to clean, and chew proof.  In addition, it comes with a factory 2 year warranty.