I bought this trio from a NPIP breeder who assured me that they were Black Copper Marans. They came from chocolate colored eggs and they looked just like the pictures of other BCM chicks on the web. Now that they are 5 weeks old and have began feathering out. I have come to the conclusion that they are not pure BCMs. Any ideas what I have. I was thinking BCMxcuckoo marans. They have feathered shanks, black legs and their primary flight feathers and leg feathers are black. I will try to post pictures but they are on my cell phone. I'm just a little disappointed that they are not solid black now. I'm sure they will still be nice chickens.