I’m new here. I need help please. We have 41 Cornish x broilers in a chicken tractor in our backyard. An unusually heavy rain ended up flooding the ground under the tractor. They’re soaked through. The water came up over their legs in some spots. Some were shivering and a few others seem to have labored breathing. A few are very sluggish and were hard to get out of the way while we moved the tractor to higher ground. I believe I saw some bloody stool from one. They have been fine until last night when the rain started and the flooding came. Do we start them on antibiotics? We are so new at this that we just don’t know exactly what to do. Thanks so much.