Droll Yankee Whipper Bird Feeder: * Microban antimicrobial technology to fight the growth of damaging bacteria, mold and mildew * The Droll Yankee Bird Feeder features 4 seed ports with individual weight-sensitive perches * Curved perch design encourages cardinals and small songbirds to eat, but prevents squirrels from feeding * Each Droll Yankee Feeder perch is individually sprung and calibrated for birds up to the weight of a cardinal (approx. 2 oz) * Length and girth of the feeder are specific to repelling squirrels; the heavy metal cap is constructed to prevent squirrels from raising the cap and reaching the seed inside * An internal baffle design delivers the seed to the ports * The 4-3/4" x 21" clear feeder tube is made of UV stabilized polycarbonate for long-lasting durability without yellowing * The metal cap and feeder base are powder-coated a stunning Evening Blue * Hangs from a looped stainless steel wire that reduces motion that would spill seed; add a locking chain to secure it against falls * Lifetime warranty against squirrel damage