This afternoon I found a very tiny egg in the nest box, the color, size and shape is far different than my layers and I think this must be a wild bird egg. No way did a wild bird get into the coop to lay the egg but there it was sitting with a couple of regular chicken eggs. I am wondering if possibly they found a wild egg in the run and one of them decided to carry it into the nestbox? I can't think of how else this could have happened. Has anyone heard of this or had it happen?