Rooster or Hen?

[Staticsupine]

I have a 6 week old RIR that is starting to get dark green feathers behind neck and on tail. It also has a more pronounced comb and the only of them that has wattles yet.
Thank you in advance!

 

[chickenlittle21]

Rooster

 

[DuckGirl77]

I agree, looks like a cockerel with that big comb

 

[Three Little Bunnies]

I had a RIR that I suspected was a rooster at about 6 weeks. He had the same signs, and he did turn out to be a rooster.