One of my chickens started having trouble walking about 4 or 5 days ago. She would walk on one foot but would fall over and the next day she refused even getting up. Did she just hurt it? She was laying eggs daily up until a couple days ago it has been cold but all the others lay their eggs. She is still eating and I think she is still drinking water, there is no sign of her being dehydrated. Right now she is in a box under a heat lamp in the coop with food and water next to her so she doesn't have to move. I have had chickens my whole life and so has my 70 year old grandma and we've never seen anything like it. I hope someone can help me, I can't afford to bring her to the vet. I don't want her to suffer, but I also don't want to kill her if she is recovering. Please Help!