From McM I'd second the NHR on that one so far. Some of their NHR hens have been pretty big, so while it definitely does look like a baby roo right now I wouldn't totally give up.
It does looks like a male right now with that comb and stance. What color was it as a chick and which hatchery did you get it from? Agree it looks like some sort of red production type bird, but the color on the wings is interesting.