I have a black Jersey giant mixed in with my Black Copper Marans. I see the BJG has yellow feet. My question is do BCMs have any white on their wings? I have 1 that has a small white almost spot on it's wing. I know BJGs have a small white bit on their wings. I am trying to seperate my chickens as they are almost 4 months old and need to seperate them before they start mateing and laying. I have just ordered a book on the subject of chicken Id. looking forward to your help. Thanks, Dave