Did you get some input on this issue? I was told to collect daily, that helps and then if one is broken get it out soon.
I feed my ladies oyster shell for calcium and not their egg shells, those I collect are crushed to powder in winter and put in worm bin and garden in the spring...I don't even risk it to give them to the birds....
Hope this helps! :) Jamie
Yes thanks for asking. I always collect eggs daily. I make sure they have access to oyster shells when ever they want. I haven't given them their egg shells to consume, though I like the idea of recycling them. I don't trust that I could get them clean enough and broken down enough to be sure that the ladies would put two and two together.....Thier egg shells seem plenty hard/thick so breakage is rare. But when one got accidentally broken a few weeks ago they ate most of it. That gave me worries. But since then they haven't intentionally broken any eggs.
I might try the idea of putting eggshells into the worm bin.