Black-oil sunflower has a higher percentage of meat and is a very nutritious source of high quality protein. The seed also boasts a high concentration of oil which is especially important in the Winter. Birds will use their oil glands to spread the oil over their feathers to keep them buoyant, dry and warm.Sunflower seed will disappear first in your feeding station. If you have ever offered a wild bird seed mix to your birds, you may have noticed that your birds will push aside the other seed in pursuit of the sunflower seed.
Manufacturer may vary.