Shell Grit Medium Shell Grit Medium is made from crushed sea shells and is a popular mineral and calcium supplement that supports digestion in birds and poultry. The medium grade is coarser than fine grit, making it ideal for chickens and larger birds. It provides a natural source of calcium to support strong eggshell formation and overall health, while helping birds break down grains efficiently for improved digestion and nutrient absorption. Features & Benefits Made from crushed sea shells for natural calcium Supports healthy digestion in birds and poultry Medium grade ideal for chickens and larger birds Helps birds break down grains effectively Aids in stronger eggshell formation Promotes overall health and wellbeing Suitable for backyard and farm poultry