Last year I built a duck house but now we are getting chickens to live in it. It's pretty much the same as a chicken house except I'll need to add a perch and the ducks food and water was kept in a super secure outside run so they wouldn't mess there house up as they are very messy drinkers. So the ducks could leave there house antyime they wanted and go have a drink. I was wondering if I could have the same set up for the chickens or will I need install a door? The perch would be above the door level but I don't know if chickens would be too affected by the cold. Where as the ducks were never bothered by the cold. I live in flagstaff AZ my coldest month the high would be 45f and lows around 13f. What do you guys think?