My pet six or seven-year old wyandotte hen, Cleo, has trouble walking. She stopped scratching a while ago, I haven't seen her dust bath recently, and started getting wobbly slowly. She laid less than a dozen eggs last spring. Recently when we let her out in the morning she would run out as usual but stumble and fall, and in the last couple of weeks she'd need help getting up again. Yesterday she couldn't walk at all and rolled onto her back or side after being helped up, so we put her in a nest box for the night-- she's the last of three chickens we have left so there no need to separate her. Her feet aren't curled and her head is always pointing up. Her wattles and comb are a bit pale, probably because it is winter, her eyes seem fine and her feathers are as good as ever. Her recent droppings looked good, firm and green-brown with white caps, though now they are small and runny, probably because she couldn't eat much. She has a good appetite otherwise, but isn't eating as much of her pellets as I'd like, mainly some scratch and things from around the yard. She is making a lot of cheerful noises, too, and flicking her tail, which makes me think she's fairly happy. This morning she was on the floor of the coop on her back, with her head up and alert. I rolled her on her feet and she stood, tried to eat a bit, but fell again. I rolled her over again and when I came back a few minutes later she was walking all over the place and eating and drinking, even stepping up and down a 6" ledge without falling. It all seems normal except for when she can't get up at all, which makes me think something serious might be going on. Does this sound like just old age, or something treatable? How can I make it easier for her/ what signs should I look for?