This is a new one for us. This is a young hen about 19 weeks old. BB Red mix. Her right foot was curled when we first noticed and thought that she might have injured it. So we sepperated her into her own cage for some rest. Now the left foot has curled and she is walking most of the time on her knees. She is very alert, eating and drinking well, poo is normal and no other visible signs. Any body have any ideas? Any help would be much appreciated.