So recently my 14 week old chickens have been acting very well.....different then how they were. For example last night I was in the coop fixing the water hanger thing and feeding my rabbit. Well anyway as I'm standing there I look down and watch my Light Brahma cockeral basically attack one of the buff orpington pullets. He grabbed her by the neck/feathers on neck with his beak and started running around the coop dragging her behind and stopping to shake her back and forth! It was terrible!!!! My chickens have been aggressive like that recently and I don't know why . I have 15 pullets and 2 roosters so maybe I should just have one. They do fight sometimes. Are the cocks starting to like maybe want to mate with the pullets? Is that why there is some fighting going on? I'm a newbie so I'm not sure lol. They are in there very big run all day and in the coop at night(the coop is 11 ft. x 6 ft.) so maybe its to small for all of them. Is that why they are fighting? I know when they were younger they established the pecking order because they would fight a little but for a long time the fighting stopped....now it started up again and is worse! I am thinking of taking 1 cock and 4 or 5 pullets to the auction.