Suet is one of the most popular bird foods. It's the best food to attract woodpeckers, and among the other birds fond of suet are wrens, chickadees, nuthatches, kinglets, thrashers, creepers, cardinals, and starings. Mixtures of suet and peanut butter may attract woodpeckers, goldfinches, juncos, cardinals, thrushes, jays, kinglets, bluebirds, wrens, and starlings.