We are new to chickens; we've had two girls for about 2 months and about 3 weeks ago we got two more. One of the new ones became sick. She was laying one egg per day, then the day before yesterday she did not lay one and then yesterday she stayed in the hen house all day and then I noticed that she has greenish diarreah. We live in Maine, so it is not too hot. I read that I should try feeding her plain yogurt and electrolytes. I mixed the two together and have fed her twice with a dropper - about a tablespoon each time. She doesn't seem to be getting worse, but she doesn't seem to be getting better either. I have her quaranteened in a portable coop right now. How often should I feed this to her? How long should I wait before trying something else? I'm so distressed and I feel so bad for her. My husband is out of town and I just don't know what else to do. Any suggestions? Thank you.