Silex Grit Serinus

This sand is calibrated to the optimum size to be ingested by these small birds (0.8 - 1.2 mm).

Its consumption is essential to ensure optimal functioning of the gizzard and the digestive system in general.

Its function is purely mechanical and should not be confused with calcium grits, which have a nutritional function as a source of calcium. Contrary to what happens with calcium grits, flint silex is insoluble and does not dissolve in the gizzard due to the action of gastric acids. In the absence of a contribution of flint silex, it can happen that the birds substitute the calcium grits in a substitute way in search of a mechanical action that will not occur completely, provoking collaterally a potentially harmful hypercalcemia.

Put at free disposal of the birds in a separate container.

The amount consumed will be a function of the granulometry of the diet of the bird and the level of specialization that the species has in the consumption of seeds. The most purely granivorous species have the highest requirements in mechanical grit (insoluble).