Question - I live in the suburbs and my three girls, who are about 12 weeks old, have thus far been living in a renovated, stick built garden shed with 1/4" hardware mesh over 2 windows and a wood floor. We have a creek a block and a half away that raccoons frequent. We have seen them on our front porch and in the trees of the neighbor's yard behind us. My big, white cat keeps them out of our fenced backyard and I've actually seen him chasing a raccoon away - which brought my heart to a near stop! We are building a run for the chickies which will have 1/2" hardware cloth, aproning on the outside, 12" cement block base and corrugated, white plastic roof. The latches will be secure as well. Do I still need to shut the girls up in their coop at night or can they come and go as they please?