I got an order of chicks in from McMurray... some of them are for a friend who wanted just a small quantity. She wanted 2 Barred Rocks, and my experience with the BR was from some that somebody gave me. They were on the aggressive side. The roosters chased small children and the hens pecked when gathering eggs. Since I also had Cuckoo Marans in this shipment, I asked that her Barred Rocks be marked. They marked them, but when I looked at the packing list I saw that they included '1 Barred Rock - Free Extra'. I have since lost either the Barred Rock extra (that wasn't marked as the others were) or one of the Marans. I got them on Monday (March 1st). My question is... Is there a way to tell hatchery Barred Rock chicks from their Marans? They look alike to me! And being hatchery birds, will I ever be able to tell the difference?