When you first start out with chickens and winter, people tend to think about keeping your chickens warm, and that is a mistake. What one needs to think about is keeping your chickens dry and out of the wind. Dry chickens with wind protection will keep themselves warm, at -35 degrees F or about -37 degrees C.
When I first started, I wanted to lock up the coop tight so as to save heat. Since we were children we're told shut the door, you are heating the great outdoors. But with chickens in a coop, what you are shutting up is the moisture, which will condense back down on the birds. Wet chickens are cold chickens. Think about people sitting in a car with out the heater running, almost immediately the windows fog up. The warm wet moisture from breathing, comes into contact with the walls and window, and condenses. This is very unhealthy for chickens.
Good deep bedding on the floor to absorb droppings and moisture. A LOT OF VENTILATION to let out wet, moist air. When your chickens are roosted, there needs to be about 1 foot of space between their heads and the ceiling. The roosts need to be set up so as they are away from the wall. This allows air to circulate around them keeping them drier. Vents above their heads work well, warm air rises and holds more moisture, rising out of the coop...again keeping the birds dry.
When I first started coming to this website, they would say have good ventilation without a draft... which seemed counterproductive. I have since started to think of it like this, wind protection = close side of coop facing prevailing wind, for me from the north and west. Ventilation in on the south side of my coop, and is open all year long.
I hope this helps
Mrs K
X2 well written and right on..
I just want to add.
Muscovy ducks aren't decended from Mallards as are most if not all other ducks.
they do not pull their feet up into the down to keep them warm, . they just lay on top of their feet, which are in constant contact with the ground.
as a result, their feet can freeze and fall off.. You see lots of those at auctions..
I have concrete floors in all of my coops.
First,I put down a 6 inch layer of wood chips. on top of that I spread a whole bale of straw.
My main coop is 12ft x 16ft.
with this method I don't have to worry about spilt water because the water easily filters through the wood chips to the concrete floor.
everything stays dry up above.
My coop has insulated walls and ceiling.
the ceiling has 2x2ft suspended grid tiles. (salvaged) all I bought was the grid system..
when the floor gets too poopy, I spread another bale of straw down..
we get minus -20F here , sometimes for a couple of weeks at a time..
the first year I put the tiles in, I did not have enough ventilation. some of the tiles got so moist that they just dropped to the floor in a mess that resembled thick oatmeal..
I added ventilation and have not had that problem any more..
the more chickens and birds you can put into the coop will help greatly with keeping them warm..
when you can go out on a really cold day and the chickens are walking around on the floor and doing their natural thing, then you have it right..
I have had 100% egg production from 20 hens when the temps were minus -20F... those were buff orpingtons..
End of novel..
.....jiminwisc.....