Birdola seed cakes are designed for the habits of wild birds. Our specially selected seed blends are help together with a protein binder so birds can peck their favorite seed and leave the rest of the cake intact. Best of all, Birdola is good for birds. It has a gourmet mix of premium seeds, with no “junk”, or waste seeds that birds simply kick out of a bulk mix (this includes oats, barley and wheatgrass). Our products provide simple solutions for both bird-watchers and their feathered friends. Affordable, easy-to-use and maintain, new Birdola Stackers are an excellent way to enjoy the beauty of nearly every species of wild bird. The Birdola Woodpecker Stacker is packed full of mixed tree nuts that woodpeckers crave. The six and a half ounce stacker contains black oil sunflower seeds, mixed tree nuts, white proso millet seeds, cracked corn, peanuts and gelatin. It attracts finches and small songbirds such as chickadees and nuthatches.