About a week ago I noticed my 5yo bantam hen was loosing weight and wasn't coming out of the coop in the morning with the other hen. We brought her in out of the cold and by the evening she seemed much brighter. However she appears not to be able to stand at all. She is slumped on her right side and she can barely move around, she just kind of kicks about with one leg. She doesn't seem to be completely paralysed however as she still moves her leg back when you try to extend it out. Could it be Marek's? She has been vaccinated but obviously vaccinations can fail. She still has a very healthy appetite, but can only eat or drink out of my hand when I offer it to her, (she falls flat on her face otherwise) and seems healthy in all other respects, apart from her breathing seems to be more labored (maybe from being slumped over?) When I pick her up, her right leg seems to hang to one side underneath her stomach. She didn't return to the coop a few nights ago and got locked out as a result, so I did consider that she may have got into a bit of a pickle with Mr fox, but I can't find any signs of injury. Any ideas please? I'm starting to run out!