Scratch and Peck Feeds - Cluckin' Good Oyster Shell Supplement for Chickens and Ducks - Flaked - 4-lbs ADDITIONAL CALCIUM SUPPLEMENT - Laying chickens and ducks required additional calcium to replace the calcium being used to form strong eggshells NOT A SUBSTITUTE FOR GRIT - Grit is necessary for the healthy development of a chickens gizzard. The gizzard aids in digestion, and allows for maximum nutrient benefit from whole grain feeds FLAKED OYSTER SHELL - Flaked for easier absorption REGIONALLY SOURCED - Grown and milled in the Pacific NW. We are dedicated to sustainable farming and supporting local agriculture by buying directly from farmers we know and trust INCREASES EGGSHELL STRENGTH - Calcium helps chickens and ducks lay eggs with strong eggshells