Hi - I have a 4 week old chicken and it keeps shaking it's head every couple seconds, like it's trying to shake something off its head. Is that just the feathers coming in or do I have a bigger issue? She did this the other day for a bit but then it seemed to go away. Now she's doing it again. I'm feeding them an all inclusive feed that has multi-vitamins, including Vitamin E. Welcome any insight or calming feedback. 
