Thanks!Chaos, I forgot that you are the one with the sweet coop!
So your windows are glass? I'ld be tempted to leave them uncovered for the light in the coop, and to let whatever sunlight there is to come inside the coop. If they are screen, I would leave a couple open on the ends/sides that aren't in your normal wind direction.
My windows are at roost height, and I crack them open, it hasn't been too drafty for them. Drafts mystify me, you always read you need to keep them out of a draft, and yet there are these great open air coops with one of the three walls being just screen, and the chickens do fine!
You don't have to check them at night, but if your girls are flighty, it is a good time to pick them up and examine them - checking for general health, mites, etc. Not every night, but regularly. CHickens are usually pretty docile at night and its easy. If you have one of those headlamps people use for camping, it makes it pretty easy.
Is it possible to run a long extension cord to the coop for the water bowls? might make your life easier, although people do fine with breaking the ice out and replacing with water a couple of times a day. doesn't work with my schedule, I leave too early in the morning in the dark of night, and return late, so it would be too short of a time with water for the chickens. ALthough they do happily eat snow!

My windows are hardware cloth, so to "close" them, I cut some thin pieces of OSB into the right shape & size, screwed eye hooks into them, and hung them tight to the wall. Drafts are mystifying to me too! The coop is in a weird wind place where there is no prevailing wind - it just swirls around every which way. Impossible to fly a kite ever!! (We've tried a number of times!) It sits in a 5 acre meadow surrounded by tall trees. So I think no matter the direction above the treetops, the wind just sort of swirls down into the meadow.
My girls are flighty indeed, even though I've had them since day 2 and handled them a lot as babies. I stopped when it started to seem to really freak them out to be caught. Now they'll get really close to me, even climbing on my shoes to reach up to peck my jeans as high as they can, but they shy away when I try to touch them. The Australorps are the shyest, but the Faverolle screeches bloody murder and struggles like she's being eaten if you try to pick her up. So I should probably go check them over at night some times. I'm hoping they all get a little more holdable when they mature?
The extension cord idea has been nixed by DH, who both doesn't want to spend the money on electricity and doesn't want an extension cord(s) to go that far. It's over 100 ft to the coop (which is another reason why I haven't been checking them at night!). We don't always have snow on the ground, but I think switching out their water bowl every morning with warm water in a warm glass dish set on a piece of insulation should be fine. Plus, the ff (which I'm thinking means frozen food!) has water in it too.
I'm glad you rattle on - lots of good information & ideas! I've seen that coop before, but unfortunately not before I built my coop! It does look awesome, and I bet the chickens are warm tucked away in the back.I check mine at night because its me. I can also check for full crops, look for mites or lice & just get a general impression of them. Also when it gets colder I can stand there and see where the wind is coming in so I know what I need to block. I can also check them and their feet & make sure they are warmIts also when I do my head count for the night.
My theory is as long as the drafts are below their roost they are fine. Thats why the vents I put on the sides is below their roost but still high enough that it doesnt blow on them during the day. Or if its higher opposite them. That's why some ends are open & some are not. I am able to roll up parts of the canvas that are not getting drafts when its needed. During the winter I leave all the canvas down. But its not tight to the cattle panels so some ventilation still occurs.
Also with vents on the bottom it brings in fresh air that then goes out the roof vents I have on the coop. My hope is constantly fresh air will reduce the chance of moisture in the coop.
It looks like all your ventilation is at the the top. I would probably keep the side that's opposite of roost uncovered on both ends. They certainly wont get drafts when they are on the ground with the vents so high.
The best way to figure out if there are drafts on them as they roost is to go in there when its windy. Most people have ventilation on the non prevailing wind side. I do as well but I have ventilation on both side as well. Some I can block if needed.
My screen door window is not closed completely. Its open to the first click which is about 6 inches. Wind can blow in there but its not on them.
This is an open air coop. If I ever made another coop it would be this. That front end is open all year round. The top windows to I believe. Plus there are windows on the side. This is a coop a BYC member made following the old plans the old timers used to use. He never has a humidity problem. I tried to follow this plan but with my hoop coop. It really makes its simple. And proves cold wont harm the chickens. Their down feathers are great insulators and they tend to snuggle with each other so its like a giant chicken sleeping bag![]()
I tend to rattle on so hopefully I didnt lose you. The best way to see if there are drafts os for you to stand in the coop. Just remember you are taller than them so what you feel blowing on your head probably wont blow on the chickens on a roost a couple feet lower than you.
ETA- my heated dog bowls are made for outside use so they are fine outside. I plug them into an extension cord that has a thermo cube on it. When temps are higher that 32 it shuts off. I would love to find a small timer that also would only have it on from dawn to dusk as that would be more time it was off. Still working on finding a timer that fits the need.
And like LALA my girls eat snow as well. I ran out of time to check their water this morning. I know its frozen since the temps were in the 20s last night. Hope fully it starts to melt with the sun. But my friend will be at the house around noon & will check for me. I refuse to hook up the heated bowls till winter is here for good !!!
Hey, I have an idea for your water bowls. Could you use two timers? One regular one, pretty generic, that turns on at dawn & off at dusk, and plug the other thermo cube timer into the first one? That way at night nothing would get electricity because the first timer would shut off, but during the day the first timer would be back on sending electricity to the thermo cube timer so it would be able to do its thing.
I like your canvas setup. It seems very versatile. You're right that all my ventilation is at the top, but I could crack open the storm door window on the bottom like you've done. I think I'll also crack open the cover blocking the row of windows along the top of the wall opposite the roost. I'll post pictures when I'm done.
My chickens don't roost very near the ground. Their roost bar is about 3-1/2' off the ground (to be above the nest boxes, which are also raised off the coop floor). So their feet are only about 1-1/2' below the bottom of the ventilation windows, putting their heads not too far below the ventilation. But your reminding me that they have down feathers and snuggle so it's like a giant chicken sleeping bag makes a world of difference!! I feel like an idiot for forgetting that! Of course they're warm in their down sleeping bag. It's rated for temperatures well below 0.

I'm going to go uncover some windows now...