Check the listing for details. Woodlink Absolute Air Mail Squirrel-Resistant Bird Feeder. Color: Black, Condition: New. Listed at 70.47 USD. Add a simple, yet witty adornment above your yard or garden with this Woodlink Absolute Air Mail Weight Sensitive Bird Feeder. A black, metal construction mimics a mailbox, completed by lids on both sides, each resembling the flap of an envelope and with the Air Mail text inscribed across them. The rectangular body holds up to 3.33 quarts of seed, and weight-sensitive perches on both sides allow select birds to dine. The springs at each end of the feeder may be adjusted to increase or decrease resistance based upon the birds you wish to feed, and the clear panels make it simple to monitor seed levels. The dual perches allow you to see plenty of avian activity, and an attached cord handily showcases the feeder on a bracket or branch. The white and black coated finish protects the feeder.