Pigeon Grit (Red)Pigeon Grit (Red) National Red Pigeon Grit is a well fortified red grit used for pigeons. It contains a blend of granite stone screened to pigeon size, sterilized calcium chips fortified with vitamins and minerals, 100% anise oil, and other specialized ingredients to benefit the health of your pigeons and reduce the odor of their droppings. This red grit also contains an abundance of iron.