Don’t know how you are set up, but if you have an attached garage it would work. On a farm in New England we once lived on they had an enclosed passage that ran from the house to the barn because of the heavy snows this was common. You could try something similar with a shed or if you have an attached garage with an exterior side door you could attach a shed/coop in a something along the same line out of concrete blocks and a metal door with interior bar. Just a thought
