Final summer run pics and winterized run pics (plastic on it in addition to the tarp). I added a pallet shelter in the middle, but the (stupid!) chickens kept roosting on top of it, and I got tired of putting them down inside the shelter, so I converted the top edges to a roost. My rooster got frostbite on his comb in the -9F weather, but that's totally unseasonable here. Probably won't happen again for years. Everyone kept all their toes, so I figure it's a win. Used my electric immersion bucket heater for a week to keep the water unfrozen.
No predators have gotten through the hardware cloth, though several have tried to dig. Trapped a raccoon, possum, and have seen foxes and hawks and the neighbor's cats around. No chicken losses this year. No free ranging due to predators and AI. Lots and lots of light due to transparent tarp. Getting 12-14 eggs from my 15 hens in the dead of winter (only one is molting).
Took somewhere around $1500+ to build, but I got exactly the size and configuration I wanted. Only thing to make it better would be exterior access nesting boxes, which would be totally doable if I had the time and inclination. I have some ideas to add poop boards to the roost area so I can collect more poop without shavings for the compost heap, but so far the chickens mix it back into the litter pretty well.
I'm still in the process of setting up a metal shed coop, but I don't think they actually need it. They made it through summer and -9F weather with just a touch of frostbite. I'll probably finish up the shed/coop anyway, but no rush, since we're heading into summer again.
Year-round Fort Knox open coop/run for the win!