Feeding Eggshells

The Shell Game One of the lesser-known ways to attract birds is by putting out eggshells. Female birds, drained of calcium by egg-laying, eagerly consume them. I have had eastern bluebirds, blue-gray gnatcatchers, northern (Baltimore) orioles, scarlet tanagers, eastern kingbirds, and tree swallows, as well as barn swallows, come to the eggshells. I save and […]