I have a 1 year old hen I've been treating for little over 2 months now with selenium + vitamin e gel and poultry cell in water for what I thought was wry neck with no improvement. Her neck is not constantly twisted but she has spasms (especially when stressed, like I walk into the room, or I pick her up to give meds or change pads under her) that only last 60 seconds or so at a time. She eats fine, drinks fine, poops are all normal. No lice, mites, or any other sign/symptoms of something else being wrong. Is there something else that causes wry neck/star gazing or neck spasms that I can try treating her for?