When I went out to let my chickens out this morning I realized one of them was out, curled up under their coop. She must have been hiding last night! I have never done that and I feel so bad. It was cold and pretty windy all night. She seems sort of lethargic. I picked her up and held her and her heartbeat and breathing seem fine, she just had no pep at all. I put her in their nice warm coop out of the wind...is there anything else I can do? Is this something to be really worried about or will she likely be okay?