I just moved my approx. 12 week Silkies outside finally! They are not in their coop yet, because the fencing needs to be finished. But, they are in their brooder which is being kept under our screened in tent. The tent is covered on the top, so rain cant pour down on them, and secured well to the ground so it can't be carried away by wind. And they can't get out of their brooder when I put the "top" on it! I'm hoping they do OK on their first official night outside!