My favorite Muscovy hen has black spots behind her eyes that looks like big scabs. She has had them for a few weeks now. Any ideas? Her overall appearance has been down, too. She isn't keeping herself well, dirty a lot (the others prefer clean water, she is bathing in a mud hole or something), disappearing a lot, just doesn't seem like herself. It's possible she's going broody. I don't know if that is related or not. Any thoughts?