We've had a broody hen for two months now, so finally got some fertile eggs for her to hatch from a nearby farm yesterday. She was on them yesterday and last night, but this afternoon my husband discovered she had switched nests to the one another hen had laid an egg in, so the fertile eggs got cold. We don't know how long they were uncovered, possibly several hours when it was 55-60 degrees outside. Are they still good or is it too late now?