I came home today to find my hen lying down on her side on floor of the coop. I can tell that she is breathing but doesn't wake up, or try to open her eyes when I picked her up and looked her over. She did mover her head and flutter her eyes when I checked her feet. I don't see anything wrong with her feathers, wings, legs. I brought her inside as it suppose to get colds tonight. Is she ok? Any suggestions on determining weather she is or not??