I went to lock up my hens last night and noticed that one of my blackrocks didn't look right, I thought she may be going to lay and thought no more of it. When I let them out this morning she flew down from her perch and seemed ok, when I locked them up tonight she was standing on her own hunched up.
I walked over and picked her up, checked her crop (which had some food in it) and then put her down. She seemed to lose her balance for a second and then went for a drink, she was walking very slowly and I had to pick her up to put her in their shed. She then went and stood in a corner under the perches.
Any suggestions what could be causing this, she lives with 15 other hens and all the rest a fine?