Birdola Woodpecker Stacker Cake 6 PACK Pack of 6 Packed full of mixed tree nuts that woodpeckers crave Attract a wide variety of birds including woodpeckers, finches and small songbirds such as chickadees and nuthatches Made of black oil sunflower seeds, mixed tree nuts, white proso millet seeds, cracked corn, and peanuts Attract a wider variety of birds with use of up to three different blends