When I got home today, my chicken Critter, can not hold her head up. Her neck is looped over. she keeps picking it up and it keeps sinking back down. she usually runs away or flaps her wings when i try to pick her up and she didn't do any of that. she just let me pick her up. she hasn't eaten anything or drank anything in a few hours now. she won't even lay down or roost to sleep. she is standing and keeps picking up her head and it keeps sinking back down. could she have a broken neck or a disease?