Are Cuckoo Marans and Black Copper Marans REALLY just different colors of the same breed??? I'm not really buying it. My Cuckoo Marans are really really small birds, like Leghorn sized (definitely LF, just small) My BCMs wowza, my March pullets are at least as big, if not bigger than my year-old BO hens - and I thought BOs were a fairly big breed! I always just kinda brushed it off that the CMs were 2 weeks younger.....but dang, by the time they are 6 months old there shouldn't be that big of size difference. Must be a breed difference. Are Cuckoo Marans even really Marans??