Will greatly enhance available calcium in the birds diet, contains vitamin D3 to maximise calcium absorption in the gut. Regular use in all seed eating birds will ensure adequate calcium for strong bones, muscle formation and general well being. Supports breeding birds and their young with essential calcium, supports shell formation and the normal development of bones in young birds. Can also be used as an emergency oral calcium supplement for egg bound or critically deficient birds. Each litre contains 33g Calcium and 25000IU vitamin D3.