No...I would not sell any wheaten chicks as 'black copper maran' lol
I'm not sure if you meant this or not so excuse me if I misunderstood you. Unfortunately it's not just the "wheaten" colored chicks that can't be labeled BCMs. Any chicks from the same breeding pen cannot be sold as BCMs, even if they look just like a BCMs, due to the recessive wheaten present. If you test all individuals via pair wise mating and eliminate the wheaten carriers then you can set up a new breeding pen with only 100% BCMs. It would be extremely time consuming but if pure is what you are working towards then that is the only way other than what has been mentioned: acquiring all new stock, from a reliable source, to be kept separate from your current flock.
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