One of my hens has her head pulled in and her feathers just looking wild. She is eating and drinking, just doesn't look right. I have added electrolytes and vitamins to the water. What else should I do? I am in east Texas and it has been wet for so long! The run has a dirt floor with lots of pine needles over it. I change their water twice a day. They have an inside coop, but they sleep in the covered run. It has been in the 30's at night the past couple days, but gets into the 50's or higher during the day. I try to change out the dirty pine needles. I also put some DE mixed in the needles hoping to keep some of the bugs down. I have 3 hens out of 5 that are still laying, but I don't know if it is this one. Should I try giving her some duramycin-10 and if so, how much and what is the best way to give it? Also how many doses would you give?