Pennington Black Oil Sunflower Seed is a source of high-quality protein and is the most popular choice of seed-eating birds. This black oil sunflower seed is a vitamin-enriched formula with Pennington Bird-Kote adding vitamins and minerals. Pennington Black Oil Sunflower Seed attracts woodpeckers, titmice, house finches, juncos, nuthatches and pine siskins. It is great to feed birds year-round and should be a staple item for bird lovers.