I went out to check the girls water to make sure it was not frozen..it was not. My black maran was very quiet. I picked her up and her chest is all puffy, feels like it is full of fluid.. She is not well!!! very lethargic, fell over when I put her down. Our coop is well ventilated no frost on inside and lots of deep shavings for bedding as well as straw in boxes. Not sure what to do, any help would be appreciated. It is currently -30 and the other girls (4) seem to be fine.