I found one of my hens under a bush yesterday and she was just laying there puffed up not moving. She got up and came to get food and was doing good. Today I come home and she is laying in the middle of the yard puffed up. I looked her over and nothing seems wrong. She is in a playpen now, she's puffed up and her mouth is open. I checked to see if she was egg bound, but I didn't feel an egg, she is also a year and several months and hasn't laced an egg or a month or so. Please tell me what I can do for her.