Question about feeding flock's shells back to flock

[Jenbirdee]

I always save my duck and chicken egg shells and bake them and feed them back to them (they love them more than the oyster shell,
but that is always available as well)
I also save and bake my goose egg shells for my goose. She is done laying for the year and isnt touching hers now. I was wondering if I can add what I have left of baked goose shell eggs into what I give the ducks and chickens?
The ducks and chickens live together, but I keep the geese separate , but adjacent.
I crush them down to dime size bits.

 

[Miss Lydia]

Of course you can. They will be just a good for them as the duck,chicken eggs. I don't even bake mine I just place them in a bowl to let them dry out then crush them.