I just picked up 4 - 4 1/2 month old Black Copper Marans, 1 roo and 3 hens. I've had to put them in with the rest of the flock until their coop is finished. Should only be a week. I have 2 Australorp and 2 Buff Orpington hens, all around a year old. Put them in with the flock last night. This morning one of the Aussies wouldn't let the roo near the food and kept pecking him. I've also seen her puff out her neck feathers at him. I came home tonight to see him missing a few tail feathers and the base of his tail is red and swollen. I have two 7 month old roosters that are normally with the girls, but I've been letting them free range during the day and putting them back with the flock at night. Any advice until we get the other coop done? I'd hate for this guy to be tail-less by the end of the week.