My hen (not sure breed, white and small in size) about 2 years old started having difficulty walking 3 days ago. Appeared to have possibly sprained right lower leg. I am keeping her separate from my other 2 hens for now. Her left leg developed weakness. She has some movement at hip but lower leg feels flaccid. She can not stand. If I put her down to stand her legs splay, left forwards and right backwards. She still can flap her wings. No signs of cuts or infection on feet or legs. She is comfortable sitting in box of shavings and eats, drinks and poops. I started giving her vitamin B. Does anyone have any ideas on what it could be or course of treatment or where to research further? No vets around me treat chickens. She hasn’t laid any eggs for a while, even before this. Thank you, Beth