Chirp Sunflower Hearts wild bird food is simply the best of the best - 100 percent shell-free sunflower. This no-mess treat is loved by most songbirds and provides them with healthy fat and protein for energy. Plus, because it has zero shells, it's perfect for patio or deck feeders. Fill your feeders with sunflower hearts so you can attract the most beautiful backyard birds and not have to worry about any messy shells.