I have a 1 1/2 year old Australorp hen. This morning she seemed fine. I just went outside, and she can't take more than 4 or 5 steps without falling over. She is very alert and eating like crazy. They free range with goats, but my goats are totally used to chickens and could care less about them. I looked her over and she seems fine. No apparent injuries, eyes nice and bright, and like I said a good appetite. She wasn't like this this morning. They snuck into my regular yard today, so I thought maybe one of my dogs got her, but she had absolutely no signs of anything; no damaged feathers, blood or even doggie slobber on her! ( This is the same hen that cost me $200.00 at the vet in January because she had a kidney infection. I hate to admit this, but I'm just unable to spend that kind of money on her right now.) Any suggestions???? I'm worried she may have gotten into something, or my like luck, it's something neurological. Any advice is greatly appreciated!