One of my hens is acting strange. She doesn't want to eat or drink. Stays in the coop unless I get her out. Only then will she walk around with her sisters shortly to their favorite spot to lay once again. I picked her up to hold her and liste to her breathing and it sounds off to me. Kind of a laboring in a way. I held her and pet her and she just set there and hung her head with her eyes closed. I noticed under her Beek was wet. As I held her every once in a while she would kind of swallow a few times. I don't know what's wrong this time. I brought her in and put her in a quite place on a heating pad. Please Please HELP !!!!!!!!