Hey y'all, I feel dumb for asking this question, but what age do you typically start giving your chickens crushed oyster and/or eggshell? My pullets are around 14 weeks now and we're feeding them a grower feed (whichever one is between the chick starter feed and the adult layer feed). Should I have already started giving it to them? And do you mix it in with their feed or just give it to them separately? I'm a newbie and just learning as I go! Let me know what your thoughts are!