Here is another image. Sorry, I'm new to the forum and am just learning how to post images. These are partridge plymouth rocks and they are 6 1/2 weeks old. This is the only one with a pronounced comb.
that would be a ROO !
The pic is really blurry , but I can see by the HUGE thick legs, the comb and some saddle feathers that I am 100% sure you have a ROO !
This is a shot of 2 of them together. The one on the left looks like the others. The one on the right is the one I think may be male. It's got much darker feathers too.