By week 20, would the gender of Buff Orpingtons be obvious? I have two BO hens that look basically the same except one is really aggressive towards me if I pick up the water font or feeder. Wouldn't the saddle and hackle feathers of a roo start to show by 20 weeks? If it is an aggressive hen, I am just going to try to hold her more and carry her around with me until she figures out she can't intimidate me. If it is a rooster though, that might be pointless. Having fun though, this is my first time keeping chickens!