Sunflower hearts are a super food for our fine feathered friends. It is vital for birds to get the energy boost they need especially during the cold months. Sunflower hearts are high in protein and have a high calorie count to weight ratio meaning birds do not need to spend as much time searching for other seeds. Sunflower hearts are easy to digest for the birds. Sunflower hearts are sunflower seeds without the shell which means no waste and no mess in your yard.