Check the listing for details. Squirrel Buster Legacy Squirrel-proof Bird Feeder w/4 Metal Perches, 2.6-pound S. Color: Green, Condition: New. Listed at 68.95 USD. Squirrel Buster Legacy Squirrel-proof Bird Feeder w/4 Metal Perches, 2.6-pound S PRODUCT DESCRIPTION Squirrels can no longer steal your wild bird seed. Over a short period of time this adds up to substantial savings that will pay for the purchase of your feeder!Key Product FeaturesBlack oil sunflower or/and safflower seeds is the recommended bird foodThe seed ports have perches for perching birds and the wire shroud provides a surface area for clinging birds. This increases your bird traffic.Patented weight adjustable spring mechanism controls how much weight the shroud will support allowing the birds to feed. Any additional weight will activate the closing mechanism. Includes openings in the shroud align with the feeding ports, providing birds access to the food. When a squirrel climbs onto the feeder, its weight automatically forces the shroud down, closing access to the ports. Squirrels and some large birds are foiled but not harmed in any way.