Thank you so much for your responds. This has to happen after 8 pm (the last time I check for eggs) and 7:30 am when I pick up the eggs first time in the morning and feed them. So I think it's dawn when something goes in the coop, cause I doubt they lay after 8 pm... I don't think it happens during the day, cause my evening eggs are usually unharmed and I live in city limits. I also don't think it's a skunk.. I would think I would notice a smell left behind? If it's a raccoon, it wouldn't eat the chickens? I thought they would go on killing sprees just to kill. I am planning on putting bricks around the run... maybe downwards and then one sideways. Hopefully that will discourage them from digging under it. Scared for my girls! :-(
Oh and I have seen egg shells that were like a chick hatched, but I have seen them completely shattered too and the egg smeared all over the floor of the nesting box