... Quantity:144pcs/ctnSupplies birds with much needed salt and calcium that may be deficient because of its environment. ... growth of a bird's beak.Three colors and shapes to choose from.Materials:Calcium Carbonate,Calcium Sulphate, Sodium Chloride ... ,artificial coloring, etc.Suitable for all birdsInstall pole included.Shelf life:3 years P-2171 BIRD CALCIUM ...