I have a small Polish hen, "Lola," who was given to me about a month ago. We got two more similar aged hens a few days later, so there are three of them. They are living in a barn temporarily while their permanent coop is being built, and have access all day to a grassy area outside, and can move in and out freely. They seem to have bonded well, and the three wander around together, and have slept on the perch together since the first night. For the last few days, however, Lola has seemed increasingly lethargic, and tonight she seems to be having trouble staying awake. She keeps lying down. She ate a couple of sunflower seeds, and had a drink, and lets me pick her up without much of a fight. She feels really thin. Her eyes are bright when they're open, her feathers look neat and tidy, it's just her behaviour that is leading me to think something is definitely wrong. She isn't pecking around in the grass like she was, and doesn't seem alert like the other two little hens. None of them have laid eggs yet. We have had warm, dry weather for months, and today it rained heavily. She seems a lot weaker today. Any ideas from anyone? She's a sweet little girl.