To start, with the bird in question, there is no crowing or attempts at sex while I am spending time in their pen. However, I have seen a few leg kicks and plucking of a feather here and there. I am not sure if that is a trait of only roo's or if hen's use that in their little battle for thier spot in the "chain of command". Those two things say roo to me but I am just a few years into raising chickens on a limited scale so I really have no idea. Different waddles, tail feather stance, coloring, and temperament. However I still have my suspicions that the 2 BLRW's are roo's. I don't have the space to segregate the hen in question to see if I get an egg.