Nature's Window Black Oil Sunflower (20 lb) is pure black oil sunflower seed — the single best birdseed you can offer. More bird species eat sunflower than any other seed. High oil content provides maximum calories. Thin shells are easy for small birds to crack. If you could only feed one seed, black oil sunflower attracts the most species: cardinals, chickadees, nuthatches, titmice, finches, woodpeckers, and more. 20 lb is the standard bag. Available in Galion, OH.
