I have 5 barred rock chicks and 5 cuckoo marans chicks. They're about 4 weeks old and I can't tell them apart. I'm looking at photos of each breed as adults and I STILL can't tell them apart. Can someone please help me look for something that will help tell them apart? I want to sell/give away a couple BRs and don't know which is which at this point. All have some black on their legs, some have black on their beaks... I have noticed some are more feathered at this point. Does one of these breeds feather out slower than the other? Any help is greatly appreciated!!! Thanks