Have a black copper maran roo who seems lethargic, he has moulted some tail feathers but his crowing is definitely weak and crackly sounding. He is perching in the coop and drinking but seems a little thin. He is not following the hens like he usually does and I've noticed him off alone and today found him in the coop alone. Could he be feeling poorly due to a moult? He is prob about 4 years old. Beautiful boy and gentle too. Is there something I should be doing for him?