I have a roo and 4 hens that i hatched from eggs off of Ebay. They are 4 months old now. My problem is I don't know if they are Marans or Orps. They are blue. I bought eggs of both kinds and don't know how to tell the differance yet. They are not quite laying yet. They have blue feathering and black legs. What is some distinguishing trait that would tell them apart. I can't post pics yet. Please help.