I have a 4 year old Orpington hen that I purchased those 4 years ago at our local feestore. Nothing seemed wrong until last year, and now, this year her issues are much, much worse. She stares blankly at you, and when she moves away she stumbles and falls almost every 5 seconds. She is molting right now, but doesn't seem to be regrowing her feathers. She does not have discharge from her eyes or nose, and her breathing is just fine. She laid an egg every day until she started her molt. I haven't seperated her, because she doesn't seem to have an illness. It's almost like it is neurological. She was never really normal as a chick. Does anyone else have a bird like this, or know what the issue is?