oh thank you for that tip! My chickens are out of food and I've fed them everything I could think of (nuts, beans, grains, bread, fruit...) that I have in the house, but i'd forgotten about that bag of tortillas in my fridge drawer.

Nice calcium score! I just throw their eggshells into the garden and they pick on those. I've never had a problem with egg shells being soft, so I guess that works too.