I have four 9 week old RIR babies. They are growing fast and have feathered up really nice. Problem is, I still am not sure if they are pullets or Roos as they all look different.........and I haven't heard sign of a pityful crow yet. The most recent problematic behavior is that one of them always wants to land on my head when I am sitting down with them. It doesn't seem mean, as I take it down and pet it and it keeps coming back, never biting or scratching me. Could this be early aggressive behavior or a Roo behavior? It is very annoying after a few times!!