My Blue Orpington cockeral has always seemed kinda down. I never thought anything about it until yesterday. His tail is always hanging down and he's low energy. Is this a breed characteristic or is it just him? He is penned up with my Splash Orp pullet and Blue Orp pullet. All 3 Orps seem to be very mellow but he seems to be too mellow. He eats and drinks fine, roosts fine, clucks to his girls just fine, has never crowed. When I open his pen door he comes right to the door and just sits. Why is his tail down?????? Is he just a very mellow boy or is something wrong with him? He is 4 months old and has never been on any meds. His diet is worms, scratch, grass, corn and some layer mash that the pullets eat, pretty much what a free ranging bird would eat. Any ideas???