I got this egg this morning from a hen that only just is starting to lay. This is her second egg and the first one had these little "bumps" on it too. They sort of look a little like fish or frog eggs that you sometimes see floating on the surface of the water. Hard little round balls on the surface of the shell. They scratch off pretty easy and the shell underneith looks just fine. I broke the first one and it appeared to be just fine. Anyone know what might cause this??