Cardinals are one of the most beloved backyard birds and now you can watch their bold, beautiful red wings in action while they visit your feeder. The convenient center hole allows for this seed cake to be mounted on a Mr. Bird cylinder feeder. Get the best view of cardinals with easy-to-use safflower seed cakes. This nutritious dynamic duo uses both safflower seed and gelatin in a compact seed cake to create a no-waste bird feeding solution. Remember, squirrels do not like the taste of safflower, so they will stay away from this seed! It's a win-win-win situation. This Mr. Bird seed cake will perform best when kept dry.