Hello - I need some advice. A few days ago my little red hen started limping. I inspected her little foot and found nothing wrong. As a few days passed, she walked but with her foot curled up. I carefully checked her leg and it seemed like there was no problems. Yesterday I found her laying and she could not stand up. She looks fine, she is eating and drinking but she cannot stand - When I stand her up and she falls over. Her foot is all curled up but there appears to be no injury. What could be the problem?