Hi all, We have been away for several days. Now that we are back I have noticed that one of my BA hens has a strange white substance covering her face and neck. She seems to have slipped to the bottom of the "pecking order" as well. Feathers all over her body have fallen or been ripped out. Her tail is almost completely non-existent. What is wrong with her, what should I do?? She has always had a little white stuff on her head, but now she looks like heck! See for yourself.