Back in stock! Our 2nd most popular Squirrel Buster bird feeder. Weight censored to close when squirrels land on it but birds are light enough where they can still feed. A great quality feeder that is fairly cardinal friendly. Consider the Squirrel Buster Plus for double the seed capacity, more cardinals, and the ability to adjust the weight censor. Lifetime Warranty. We fix it for free at our shop in Crystal Lake!