Is there any straightforward answer to the question? I've been looking through old threads on the subject and I've seen everything from switching them over to laying feed at 14 weeks to the claim that laying feed should absolutely not be given until you see an egg. Yet many people seem to switch over automatically around 16 weeks and others at 20 weeks. Mine are 20 weeks old today and not yet laying. I just used the last of our starter - should I go back and buy more or is it okay to give them the laying feed? And what about oyster shell? Will it hurt them to give it to them before they actually lay? Someone suggested it could cause them to be eggbound.