I recently purchased a few Sebright bantam hens, and they were doing great for about 2 weeks. Yesterday, I noticed one of the younger girls (hasn't started laying yet) was walking a little oddly, but she soon corrected herself and I didn't give too much thought to it. Today, she is staggering around, using her wings to catch herself when she falls. It almost looks like the staggering a rabid animal would do, but I know chickens can't get rabies. None of my other hens are doing this, just her. Her droppings are fine, her eyes are still bright, and her nose isn't runny. I haven't switched feed or anything recently, and she's been eating the same stuff as the others. A few hours ago, she was laying on her back on the floor of the henhouse, with her feet in the air, wings splayed. I thought she was dead, but I picked her up and she was okay. Her legs aren't broken or swollen, and I can't find anything visually wrong with her. I thought it might've been egg binding, but like I said, she hasn't laid yet and I don't think she's due to start for another month. If anyone can help me, I would be most appreciative. I'm not sure she'll make it through the night.