Hi quickzemke. Welcome to backyard chickens. Got to agree with oldhenlikesdogs. Something is wrong, either injury or illness of some sort. If she is spending her time huddled with her head in a corner first thing I would do is get her in a pen by herself where you can observe and offer supportive care. Her nails have been trimmed. Have you given her any probiotics or vitamins? Some vitamin deficiencies can present with wobbly gait, also if she is being bullied by the other hens, she may not be eating as much as she should. I would give her water spiked with rooster booster or some other vitamin/probiotic of your choice, make she has plenty of good food in front of her along with some high protein treats such as scrambled/boiled egg, tuna or a can of cat food. Whatever you can get her to eat and just watch her. If she is going to get stronger and walk better she will, if not another trip to the vet may be in order.
If she gets better than you may face the dilemma of what to do with her. If you can rehome her you might have to other than return her to a flock that is mistreating her.
If she has Marek's she will worsen. There are threads here on BYC that you can read on the subject. Let's keep our fingers crossed that it is just a matter of being bullied.
Good luck and keep us informed.
