4-5 of older girls had brooder pnemounia when they were a few weeks old. One knocked the waterer over and got wet, infected 3-4 other chicks. Now all carriers, but I kept them. There hasn't been any more sickness since then. I let them out in very light rain and that is all. Today is heavy rain and stormy! They are cooped up in the run and coop. I have a roof on the run and a side panel to keep the run somewhat dry. They are going crazy that they can't run free. I don't want them to get sick again. Do you let them free range in rain or stormy weather?