Seeds are held together with a natural binder to stay together in all kinds of weather. Fortified with vitamins, minerals and elctrolytes for the overall health and well-being of wild birds. Made with the premium seeds birds prefer. Size is 2 Pound. Black Oil Sunflower Seeds, Safflower, Peanuts, White Proso Millet, Calcium And Grit. UPC Code = 732493543244