One of my 1 Month Old Cuckoo Maran Cockerels has feather loss and swelling on his rear end (I don't want to offend anyone) But I really need to find a solution quick. He is not running fever, has a good appetite, drinks well, eyes are clear and very active. I don't know if its a case of picking, or something more serious. I haven't seen this in young chicks, only older ones of breeding age who might pick at a flock mate. Any sugestions? I've separated him from his mates and placed him near one of my older hens to keep him calm. The white you see in the last pic is only feathering, he just now getting all his feather in and losing his baby coat.