Another coop ventilation and temperature question

[Lumikko]

As winter is coming and I want to make sure my girls are well taken care of, at what temperature would people recommend closing the windows behind their roost bars? The coop will still have ventilation from the roof ridge vent, the eaves being open (but hardware clothed), and an opening in the wall to their covered run. Pictures included below to aid my poor descriptive skills! Thank you!

 

[oldhenlikesdogs]

I close my windows that face prevailing wind at 50 degrees or below. The rest I close, and open based on what each day is like. Open windows opposite the prevailing winds will move air, so I open or closed based on what the day is like. Mine generally stay close when we reach freezing, or 32 degrees or less.

 

[rosemarythyme]

I leave my roostside windows open even below freezing, but I don't get much draft through them so I feel safe doing so. If draft is an issue, then I'd close above freezing or install some sort of buffer to reduce any draft.

 

[Alaskan]

I leave my roostside windows open even below freezing, but I don't get much draft through them so I feel safe doing so. If draft is an issue, then I'd close above freezing or install some sort of buffer to reduce any draft.

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