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- #21
I had to go back to find that you are in central Virginia. If you put that info in your profile that will always be available. It helps in so many different ways.
You have the right idea. Warm air is lighter than cool air so if cool air is coming in gravity will pull it to the bottom which pushes the warm air out above. How much gets moved depends on the size of the ventilation holes and the difference in temperatures of the air coming in versus temperature of the air inside. You will move some with vents up high but the way to maximize that it to have a vent where the air is coolest.
You may have shading or other feature that changes this, but north of the equator that is typically in the north side of the coop. The east side isn't horrible since you want this when it is hottest, which is typically in the afternoon. My coolest spot was actually on the south side because of a shed.
I did what you are talking about, had a cut-out a little above ground level and covered it with hardware cloth. Maybe 8" high and between two studs. Mine was a little too low. The chickens scratch around my feeder and throw bedding over there which can cover it up. I need to rake it away in the summer.
In central Virginia you can have some pretty cold nights in winter. I'd guess your extreme is probably close to zero Fahrenheit, though that may be rare. I would not want a cold breeze hitting the chickens on the roost on those nights. If the roosts are between this low vent and a higher one you might get a cold wind whistling through during a storm. You might want a way to block it off or at least buffer the wind. In Arkansas I'd rake bedding over there for those cold snaps. You might have a piece of wood that you could lean against it. If your roosts are not between that vent and ventilation higher up don't worry about it.
I thought I had put it in my profile before.
It just seems to make sense that having a low intake would be ideal. I'll stick with that plan.