There is an orchard up here that sales local food, honey, soaps.. etc. I was looking in their coolers and they have HUGE chicken eggs (they must have been twice as big as Kroger eggs). They are local, I don't know if they are fertile or not. The paper that had the price on it said they are double yolked. I was thinking about buying some to incubate, but my bator already has quail eggs in it. I'll be going back to the store in a few weeks, do you think it would be worth buying some eggs, checking the fertility and hatching some??