A mixture of minerals and calcium

Mineral feed for seed-eating birds consisting of particles of oyster shells, mollusk shells, limestone, silica stone, and charcoal that naturally facilitate grain grinding and improve digestion and high calcium content for skeletal development. Analytical components: calcium 22%, phosphorus 0.01%, sodium 0.16%, insoluble ash in hydrochloric acid 35%. Proper usage instructions: fill the feeder daily and leave it available for the birds. Leave fresh water available. Box size 2 kilograms.