I have a six week old Barred Rock that I ordered to be a rooster, and I would say from his behavior that he is. He challenged my hand in the brooder from day one, makes sure all others are in the coop before he'll go, etc... He seems to do some things that I want a rooster to do, but (so far!) not to not do the things that I don't. He is not overly agressive and does not seem to be at the top of the pecking order, which is really what I am looking for. In that same batch, got an Australorp that has a very large comb-much larger than any of my 11 week olds have, even. Are there any other things that I can look for to know if this is a rooster? And, if not, how soon will I know for sure? On top of that, one of my 11 week old "hens" started to crow yesterday. Yikes! This one is at the top of the pecking order and the most agressive toward other chickens. If she is crowing (or trying to-it's not very good yet) does that definitely mean that "she" is a "he?" If I know for sure, I think that I would re-home this one in favor of keeping the younger, more submissive Roo, and I just spoke to someone that would take him/her. It would be helpful to know for sure on each one before I start taking any action. These are my first chickens and I'm attached to them, so I certainly don't want to get rid of "Ingrid" if I'm jumping the gun at all. Your help would be appreciated! I will try to post some pictures, if I can figure out how. Thanks.