We recently verified that we can indeed have chickens where we live (Pittsburgh, PA- in the city) and are now in the planning stage of preparing for our lovely ladies. Two things which to me are immediate concerns in our coop and run/tractor designs are: 1. Our summer temps (while the documented average is 82.5 in the summer, it easily ends up as hot as the upper nineties with high humidity) 2. Our winter temps (average low is 20 with the average winter temp being around 35) I do have some prior experience raising chickens from my childhood, though I lived in Seattle, WA at the time so the climate was quite mild and wasn't a huge concern for the chickens. I'm wondering what special things I will need to do/consider for the temperatures here to ensure my hens will be safe and happy year-round. I'm also working with an urban setting, though I do have a fairly large yard for living in the city. I'm thinking that something which utilizes veritcal space would be a better economy of size, but I'm not sure if that's the right way to think about it. I'll take photos of my available yard space shortly so as to help with reccomendations. I appreciate any pointers in this regard, and will update with any new thoughts/queries as I read more and study the many lovely photos and plans for chicken structures here on the forum.