We found a couple eggs with hairline cracks in them today. It's been cold and snowy the last few days where we live in NH, so we wonder if eggs can crack due to the cold. The inner membranes of the eggs remained intact, and the cracks became difficult to find after being inside for just a few minutes. We are hoping this is a sign that it is due to weather and not pecking. Anyone ever seen this? We've also had a couple of our girls just start laying in the last couple weeks, and have noticed the eggs have been pushed out of the nest boxes into a corner on the opposite side of the coop, which has caused a little concern as to whether we have some unhappy girls... Any input would be appreciated!