My girls are sick! I found one hen on the ground the other night instead of on her perch and her feet are curled and she can't stand up. She is no longer eating and I'm having to give her vitamin water from a syringe. I found another hen today limping and wobbling along. And anther hen that I thought was broody the last two weeks was off her best today and she is half the size she was a couple weeks ago! I love m girls! What is going on?