Is it just a fluke, or is there possibly a reason? I ordered 16 chicks - 4 each of Barred Rocks, Buff Orpington, Speckled Sussex, and Ameraucana. They were hatched on Aug 15th. One of the Barred Rocks, and one of the Speckled Sussex don't have tails, but the other ones do. Shouldn't they all have tails? Just curious. Thanks!