Droll Yankees® Yankee Dipper® Squirrel-Resistant Bird Feeder, 5 lb. capacity, 28 in., RedPrevent large birds and squirrels from eating all your bird seed! You save money on seed when you use a Yankee Dipper Bird Feeder. Weight sensitive perches encourage smaller songbirds to eat while preventing squirrels from feeding Perches are calibrated to collapse under approximately 2 oz. of weight Heavy metal cap fits snugly on the tube to prevent squirrels from lifting it to reach the seed Length and width of tube are designed to prevent squirrels