CALSI-BIRD is a high quality, water-soluble calcium source. This nutritional supplement is used for quality eggshell formation, for good skeletal development in young birds, during the breeding season and in calcium deficiency.Calcium is an essential element in a birds body. Besides its other benefits, it is necessary for proper functioning of the nervous system. Calcium deficiency in birds leads toserious health problems. If the bird is not given enough calcium, it will cause skeletal and bone deformation. It causes bad eggshell formation.It is highly recommended to give extra calcium for birds during the breeding season. Adequate calcium provides good eggshell formation and healthy skeletal development.