By early spring, the natural food sources for birds will be very
Birds that have over-wintered will be in need of any food
they can find, and those that are migrating will find few sources of
food as they pass through the area.
Birds nest and lay eggs in the spring, and the females’ requirement for
calcium is high right before they lay their eggs.
You can help out the female birds nesting in your area: Chicken (and
other) egg shells are rich in calcium, so save and crush the shells of
eggs you use. Here is how the experts suggest you provide the shells to
The safest and easiest way to provide calcium to the birds is to grind up the egg shells and stir them into cornmeal. Sprinkle the cornmeal/calcium mix around the feeders, on a platform if available.