My cockerel is close to 7 months now and unfortunately he is a dork in love matters, which I wouldn't mind except that our mystery breed pullets turned out to be gamey mutts, and they didn't grow that big. They all have been together since they were about 12 weeks old, and they get along great except when he's in mating mode. He's probably about 7 pounds right now, and the pullets are between under 4 pounds to 5lbs. I also have a grownup gamey mutt stray hen we caught, and a barred rock hen who is not in good health atm. The cockerel only has access to the gamey hen because 2 of my three pullets are not laying eggs yet, and they run away from him when he tries to mount them. I have no idea why these two aren't laying yet since another pullet of the same age and mutt flock is laying, and the poor pullet already is missing some back feathers so I keep her separated with the barred rock and the other pullets. I'm getting a bit tired of all this chasing around and screaming, so when can I expect the cockerel to calm down a bit? another 6 months, a year? I wish I had known my pullets were going to remain small, and that I had known how big brahmas actually grow (I had never seen that breed before so I couldn't visualize irl how big was big XD). He's a sweetheart and despite being so big, he's so tame that when my nieces manage to catch them, they play with his wattles and comb and he has never tried to peck them. Heck, he's never given us a real stink eye yet. I've heard of people that have flocks of mixed sizes, and the lady I got the brahma from has a flock of over 20 chickens of regular and bantam size, and her alpha rooster is a 14 pound 9 year old rooster, and when I saw him the rooster was lying next to his bantam mille fleur gf XD. Seeing that I have the hope my rooster will eventually learn to be gentle, but how long will that be? will that happen when he finishes growing?