Hello. I recently got 4 Wyandottes. I quarantined for 2 weeks, they were fine, so let them into the flock. After 1 week, one of the hens got diarrhea. I quarantined her again, and for a 3 days I had for force food and water. She's been eating and drinking on her own for the last four days, but after a week of corrid treatment she still has diarrhea. Is there something else I need to do?