Kaytee cardinal cakes wild bird food offers the premium ingredients that cardinals love to eat in an easy, convenient, ready-to-feed cake. Gives your backyard birds consistent energy and nourishment. Just slip the seed cake into a Kaytee cake feeder for convenient feeding. Theres no feeder cleanup or removal of old seed to worry about. Seed cakes last longer than loose seed providing you with longer viewing time. Birds can't push loose seed out of the feeder, so there's less waste. The special honey seed formula also attracts a wide variety of birds.