So, this is something I do. It helps prevent birds from raiding eggs from other nests, since they'll have enough calcium! Make sure you properly sterilize any shells. Also, dried corn also has a decent amount of calcium.

Give #NestingBirds a Calcium Boost By Saving Your Leftover #Eggshells

Your breakfast discards can serve as vital nutrition for females as they make their own eggs.

By BirdNote
Published May 13, 2019

"Birds’ eggs are among nature’s most elegant creations. But they’re not easy to make.

"This American Robin will lay one egg per day for three to four days.

"To make her eggs, the female robin has to use a great deal of calcium. But she can’t just pour herself a nice big glass of milk. She has to find her calcium in nature. And it can be tough to find enough.

"But we can help. During the nesting season, we can give the birds that visit our homes some of that crucial calcium.

"Start off by putting calcium-enriched seed and suet in your bird feeders.

"For the many species that don’t eat seed or suet—like robins—you can give them leftover chicken eggshells instead.

"Rinse the shells off in the sink, spread them out on a cookie sheet, and bake them in the oven at about 250 degrees for 10 minutes. You just want the shells to dry, not brown. When you’re done, crush them up."

Read more:
https://www.audubon.org/news/give-nesting-birds-calcium-boost-saving-your-leftover-eggshells

#SolarPunkSunday #Birds #FeedingBirds #Caretakers #Wildlife #AnimalProducts

Give Nesting Birds a Calcium Boost By Saving Your Leftover Eggshells

Your breakfast discards can serve as vital nutrition for females as they make their own eggs.

Audubon
Um, did folks NOT read the post? I also mention CORN as a source of calcium. smh.
@DoomsdaysCW What!?!? You mean "Also, dried corn also has a decent amount of calcium" in the very first paragraph means corn corn?🤭 😂 ;)
@paul @DoomsdaysCW Interesting, I compost all of our eggshells. They don't break down so I tend to break them up when I stir them into the garden. I suppose all that is a great supply of calcium to the ecosystem here.
Yeah, I sterilize them before composting -- not sure if my pile gets hot enough to kill all the pathogens (speaking of which, about to head out and stir up the pile now that it's thawed out), @ai6yr . I would definitely sterilize them before mixing them into bird seed or feeding them to robins. @paul
Also, birds, especially Robins, will eat other bird's eggs (and worms). They are NOT vegan!