I have a 6 month old Jersey Giant hen. Earlier we went out to the run and she was just laying there, kind of half on her side, half on her stomach. Her head was up slightly but our other 5 chickens were gathered around her. Obviously stressed. I went out to check on her again a few mins later and her head is down and her breathing is very shallow. None of our other chickens seem sick and we don't see any visible injuries on her. Any advice? We are going to put her in a large dog kennel to separate her from the other hens. We are also starting to give her antibiotics. Since we don't know what is going on, we arent sure if it is too late to even save her. I sure hope someone out there has the answer, because I would hate for "Bubbles" not to make it. She is our fav chicken and my 5 yr old would be so sad. Any advice is welcome. Thanks!