The more I learn about chickens, the more I can see that my flock of 4 is going to grow! Although my coop is perfect now for my 4 hens, I am thinking about converting a large wooden storage shed to a new coop, and using my existing coop for newcomers until they can join the flock. My shed is in perfect condition but will of course need modifications to make it a good home for my chickens. There is a window on one end of the shed and a double door on the other end. I'm thinking of adding two windows on the other two walls (long walls) that can be kept closed in winter, plus ventilation openings that can be kept open year-round. My question relates to the placement of these windows and vents in relation to the roosts. I've seen pictures on here where the roosts are right next to windows, which would give the hens a nice view but what about drafts? And the vents...top of shed, close to roof, above the roosts, or bottom of shed, close to floor, below the roosts? Also, what are the best dimensions for vent openings? All suggestions gratefully accepted! I will need to hire a carpenter for this job, so I hope to get it right the first time around because I don't have a handyman at my disposal.