This baby is 7 weeks old. She is never agressive in play and is quite sweet. She has more feathers then her two sibs. Her comb is smaller then her two sibs and feet not as chunky. I think those two are probably roos and this one is a girl. What do you think? What else do you look for? Thanks, Also can someone please tell me the identifying factors in a roo? I see so many people confidently telling others that their baby is a roo, but I would like to know all the signs to look for. Thanks.