The Squirrel Buster® Evolution is the latest feeder to join the renowned and revolutionary Squirrel Buster family that has been keeping bird food safe from squirrels for 20 years. Its perches make it easy for birds to feed without the threat of squirrels.
The weight of the squirrel causes the feeder shutter to close, instantly cutting off the food supply. Squirrel Buster's patented Seed Tube Ventilation System lets fresh air enter seed ports and openings at the base of the feeder. Hot, humid air escapes at the top, keeping seed fresh and appealing to birds.