I have 6 hens and over the past couple months I've been introducing a cockerel. It's been going fine but when ever a hen comes mear him, he freaks outs and flys on top of the roof of the coop and won't come down. When he doesn't freak out the hens don't care about him, only when he freals do the hens peck him. Is there a way I can make him not flip out? And he only attacks the 160 pound human (me) but not a 12 pound hen! Is flighty behavior normal with cockerels?