I have read that their age is approaching egg-laying prime, so why are some laying one or two eggs every several days or not at all? I feed them layer pellets and scratch, and I let them out to forage for an hour or so every day. The weather is generally warm during the day and cool (high 60's to 70's) at night. They do not have a chicken run, but their coop has three large windows. I dusted them for mites only a few weeks ago and there are no signs of egg-eating, so what is wrong?