Squirrel-proof bird feeder holds up to 1.4 quarts of bird seed * Weight of squirrel closes access to seed ports; negative grip tube for added protection * Squirrels are blocked, but not harmed; attracts wide variety of clinging/perching birds * Place feeder just about anywhere; easy to fill and clean * Measures 4 by 4 by 21 inches; 2-year hassle-free warranty