It was explained to me once that you could sex Wheaten Marans pretty early by the amount (or location/density?) of black in the wing feathers. What are your thoughts on these guys? NOTE: They were moving really quick and now looking back at the photos, its hard to distinguish one from another. I know all three chicks are pictured, but there are probably duplicates of the same chick. Do you guys see any roos? And if so, how can you tell?