The Yankee Tipper Squirrel-Proof Bird Feeder has a collapsing tray that is calibrated to tip down under the weight of a grey squirrel, saving seed for the birds. The Yankee Tipper is preferred by larger birds and ground-feeders like cardinals. The length and width of the tube are designed to prevent squirrels from reaching the ports and the UV-stabilized tube has a large 5 lb. capacity. The heavy-duty metal components are powder-coated in midnight black and will hold up to the elements while resisting squirrel damage. The tightly fitting metal cap cannot be lifted by invasive squirrels.