I always heard and thought chickens could get "grit" from the ground if there was a run available and I wouldn't need to provide it. But I just read a post where it is said if you feed them anything but their feed than you need to give them it. And I can't find anything else stating that the ground would provide that when neccessary. I have some grit so it wouldn't be a problem to give them it just thought it wasn't as neccessary...
