Crushed Eggshells are Good to Mix with Birdseed

Cornell Lab of Ornithology and other scientists believe that pollution depletes calcium carbonate in the environment which results in a reduced population of some songbirds.

Eggshells are about 95% calcium carbonate. You can give birds additional natural calcium, especially in the spring when females need it to produce their own eggs, by mixing eggshells with your seed.

Rinse the eggshells and put them in a bag in the freezer. When you have a lot stored up, spread them out on a cookie sheet and bake for 30 minutes at 250 degrees to make them safe for bird consumption. Have fun smashing the shells into pieces and scatter on a platform feeder or mix with your seed.

Putting eggshells on the menu may even attract species that don’t usually come to seed feeders, like orioles, gnatcatchers, and some species of wood warblers.

And for gardeners, eggshells around the base of plants deters snails and slugs from crossing the sharp eggshells barrier to reach your plants. It also boosts the nutrients in the soil and can be mixed together with dried coffee grounds, which provides a high content of nitrogen, to keep your plants healthy.

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