A few months ago I had a hen with curled toes. I separated her from the flock, syringed her daily with Poultry Cell, and she recovered. It took almost a month though. Put her back in the flock, and she was fine for about 3 weeks. Now she's showing signs again, so again she is isolated so she doesn't get picked on. Slowly showing improvement with daily syringes of Poultry Cell, but I'm wondering long-term what is going on? Would appreciate any at all advice. Thanks!