My little white hen Luna is acting mopey for the past two days, she has been out in the rain for the past two days off/on since i have been out of town and my dads been on chicken patrol. She is still laying her eggs and walking around in the yard but she mopes and just sits there and puffs up. My dad said last night she didnt go to roost like normal and tonight she was also just sitting in the middle of the yard. Help!! Not sure what to do next, shes inside now with a lamp on her with food and water.