Last week I changed chickens to pellets from crumbs same brand and everything. They haven't laid an egg since. They really are not eating the pellets but I was giving scratch, sunflowers and oyster shells. Is it normal for them to go to such extremes as to stop laying. I have ten chickens and for one to stop laying I would think somethings wrong but all ten to stop it is something else. I bought crumbs today and mixed it in. I hope this helps. Any advise please help.