I'm holding out hope on at least one of my English Buff Orpingtons just being an aggressive hen and not a cockerel. I can't watch videos at work, but "facing off" is what this one seems to do. Raises the neck feathers and flaps at other chickens. I've tried looking at the neck feathers to see if any are pointy vs. round, but I'm not sure just how pointy they should be to indicate cockerel. The guy I bought them from claimed that pullets will have feathers on their backs much faster than cockerels, and all mine feathered really fast. He brought me three, smaller replacements and one of them already had a pink comb, but he assured me it was a pullet. Now, I just don't know...