I just got her on friday and she looked perfectly healthy and so did all the other birds she was housed with. But for the past two days she has runny poops just sits on a perch all day and constantly coughs. The pullet she came with is not showing any signs of being ill but i am housing them seperatly. Do i need to get some sort of medication for her ? I have no idea how she would have gotten ill she is a serama so i am keeping her in the house to keep her warm. Is there anything i can buy for her at the feed store ?? I know there are no chicken vets around here.