We have a run with a roof so that they don't get wet. The run has sand as the bedding, so they usually don't get fresh grass unless I let them out of the run into our yard. Usually, every night about 30 minutes before dark, I let them go into the yard to free range. They always go right back to the run and into the coop as soon as it gets dark. Well, I live in Maryland, and it gets pretty cold sometimes in the winter, and it is about 33 degrees fahrenheit right now. But it's raining and the chickens look very wet. Like usual, I went to let them out into the yard before they go to bed. Well, I used an umbrella so that I won't get wet, and the chickens did not seem to mind getting wet while searching for bugs and grass. They just went to bed about five minutes ago, except, they went to bed pretty wet. Is that ok for a chicken? I didn't think about it until after I came back in. Should I be worried?