Thonks for the suggestions. No new birds have been added - she is one of the two remaining hens we have had now for many years, so if it is Mareks, I was wondering how she could be exposed to it. It does seem a bit strange though. - she has not lost any weight, she's not lethargic, or anything...
I thought her age was about 4 years old, but it turns out she's actually about 6 or 7. She's just been given some meat, she was having trouble 'connecting'with her food, and kept missing it although she still seemed quite alert ,eager to eat, and perked up more after finishing the meat. She...
Thanks for the advice. She is reacting to light and her legs seem normal enough - as in she isn't doing the splits. We are going to try and give her some Vitamin B later on and see how she goes, and will keep updating.
A couple of days ago, we noticed that one of our chickens was laying on the ground of the run, and wasn't getting up. We've set up a 'bed' for it in the wheelbarrow with some blankets, given it food and water, but it seems to have completely lost the use of its legs. Other than that it seems...