Shafer Seed 51041 40-Pound Bag, Black Oil Sunflower Wild Bird Food Black Oil Sunflower Seed is the favorite seed of most wild birds. Feed it to attract the widest variety of Songbirds like Cardinals, Chickadees, Finches, Nuthatches, Woodpeckers and much more. Shafer Seed’s extra clean seeds are high in energy and have thin shells making it easy for all birds to consume. Use tube, hopper or tray feeders with this truly gourmet seed. Extra clean, thin shelled Sunflower Seed has high energy content Feed in tube feeders, hopper feeders or platform feeders Attracts the widest variety of birds Satisfaction guaranteed   Indications All bird breeds Ingredients limited ingredients Directions Feed birds