Hi; I live in MN in the Twin Cities with two chickens in my backyard. This is my first year with chickens. I have an A-frame coop with a run built on but I also let my chickens out for variety and exercise. The coop is made to move around the yard but it is not a one person job. We just had some severe wind, hail and down pouring rain storms . The coop kept them dry and protected from the hail but I worried about wind damage. Not only could branches fall on the coops but in a tornado or high wind, the coop could lift off the ground. Luckily that did not happen this time. My question is, should I leave the pen open and let them find their own safest place or do I keep them contained? My chickens do like to go under my deck when they are out which might be more stable. I do know nothing is guaranteed in a tornado. Any suggestions? Thanks, Patti and the City Chicks.