I have a hen who is molting. I thought she was broody as well as she stays in the ensting box a lot. Anywa she is holding her wing kind of weird I checked it for injuries and foudn none. She can move it fine. Today I checked her and I noticed the skin on it is green. A dark green. This is on both the top of the wing and the underside of the wing. Can this be a fungus or somethign worse? What should I do about it?