The Audubon Peanut/Black Oil Screen Feeder is great for feeding woodpeckers, nuthatches and finches. Durable stainless steel construction ensures years of enjoyment. Arrives fully assembled. Easy to fill. Holds 12 oz. of seed. With sunflower seed, you will attract finches, nuthatches and chickadees. With peanuts, you will attract downy woodpeckers, hairy woodpeckers and flickers.