My chicken has lost almost all his feathers have?

Some tip last forum on chicken coops xxneuroticxx89 question : My chicken has lost almost all his feathers Hello, I'm a buff Orpington chickens. It was hatched last year at times so that it is less than one year. He had free rein for a long time and the only chicken in the housing. Recently because of the coming winter, I put it in his barn. She seemed fine for a few weeks, but now it has lost many of their feathers. She was completely black, but now all his feathers above are gone and it

Building a Chicken Coop