Formulated to attract Cardinals. Birds with prominent, seed cracking bills, like Cardinals, easily crack in-shell seeds like sunflower, safflower and buckwheat. These seeds preclude smaller birds with finer bills yet attract larger, colorful jays and cardinals. Ingredients: Black Oil Sunflower Seed, Striped Sunflower Seed, Safflower Seed, Buckwheat. Contains only the finest and freshest ingredients. Scientifically tested, developed and marketed to appeal to a wide variety of wild birds. Free of filler and waste. Better seeds and better quality mean more birds at your feeder - again and again!