I would candle them. Just go out there at night with the brightest flashlight you own, or use the flashlight on your phone and look to see if there's a small blob in there with some veins. If you see nothing at all, that's most likely a fresh(er) egg.Is there a way to tell if eggs have been set on by broody hen?I had a hen setting on nest for 10 days and I went out of town for a week.When I got back she was in a different box on eggs.The person I had looking after them said she had been in that box since I left.He had to have gathered the eggs she had been on for the 10 days.I dont know witch eggs they are.What should I do???