Okay, that helped. I can confirm he is a cockerel. His male specific saddle feathers are stating to come in. He's just late but otherwise looks perfectly normal for a cockerel that age. I don't think he is quite ready to mate, so that is probably why he is behaving strangely with the girls. If he is causing problems, then separate him for a while until the girls are near to laying. You will be able to tell by there combs and wattles going red, but may not happen until Spring. Or you could re-home him. Lots of options. I've circled the start of male feather on him. The feathers coming in will be very narrow and very glossy.