I have Dark Cornish hens from hatchery and they are not straight DCs. They lack the dark necks and heads, DCs have black around the neck and head, even the ones with poor coloring, and the lacing isn't right either. I will say she is probably crossed with Cornish because if the tight, muscular build and the head shape and eye. I would say she is crossed with some kind of golden laced breed that got her that coloration. Perhaps the roo was a DC and the hen was golden laced ----?