I have two light brahmas. They have very different personalities. I got them at the same time from the same St. Run bin in the feed store. From day 1, one of them feathered out twice as fast as the other one. So I think that one is a pullet. The other one was very slow to feather out, and now at 11 wks, STILL doesn't have all its feathers. Also, his wattles seem to have appeared almost overnight. And are a darker red than the other ones. My fully feathered one is really sweet. Lets me handle her, isn't crazy at all. But my little "T-Rex" is crazy. He is displaying what I think is very 'roo' like behavior in the past 2 weeks. What do you all think? Important to note that 'T-Rex' while looking smaller than the fully feathered 'Oreo', he? weights about twice as much it feels like. I have a Full Album of Pictures , some of them at a younger age. Some selected pictures of them now at 11 or 13 wks or so. The first set, up to the "side by side" pic is the one I am calling T-Rex and assuming a roo. Side By Side From here down are the pics of "Oreo", who I hope is a pullet, but I fear is a roo too.