I would say the standard 50%. However, the comb is looking a little pink to me. Difficult to tell at this age.
Yeah, I know what you mean. I went and got me 5 RIR"s and thought, no, I was sure, I got 1 roo. But, then "she" went and laid a big, beautiful egg!! Unless I have a "gender confused" bird, she is a hen for sure.LOL