We ordered 4 chicks (hopefully pullets) from mpc. They arrived yesterday, in good health and seem to be doing great. We ordered 1 each: Rhode Island Red, Barred Rock, White Rock, and Buff Orpington. I'm pretty sure that the black one is the BR, the brown one the RIR, and the and darker yellow one the BO. But, the lighter yellow chick with the black/gray on its back doesn't really look like the pictures of white rock chicks that I've seen. Any advice would be appreciated. Thanks!