I have a 2yr old barred rock hen whose comb and "face" is very pale/gray looking. The feathers around her face are dull & brittle looking. She looks as if she's got dust on her feathers around her face. She's acting very lethargic, but eating well. I first noticed her symptoms 3 days ago. She was lethargic that day but did get out of the pen and get around some Friday. Today she was laying by the food dish sleeping. When I bumped the pen she woke up & perked up & walked to me when she saw I had food. She is a little shaky on her feet today as well.