I have an English Orpington rooster. He molted in the fall/early winter. Since his molt, a section of his feathers on his neck have just not grown back. It is a strip about 1-2 inches wide and goes down the front-right side of his throat area. I can see little feather "nubs" and what look like a few pin feathers that are about a half inch or so long, but this is the way it has looked for about 3 months now. The feathers just don't seem to be growing at all, and the exposed skin is very red (maybe from always being exposed to the cold?) the skin is not dry at all. Is this just something to do with molting that will eventually resolve itself? It has been so long I am just worried and want to be sure this is not something I need to do something about. He is in good health and otherwise and acts normal. They are due for a worming, but other than that, everything is great as far as I know. What could this be?