I had been feeling kindof bad about leaving mine open to our predator proof run 24/7 in this arctic blast, but seeing that Mrs. AK leaves hers open I think I won't! It was -15 outside
this morning at 8am when I went out to check on them and they were all scratching around in the shavings for the BOSS I had tossed them last night. The door is on the nonwindward side of the building, so they don't get big gusts coming in on them.
I feel like leaving it open adds a little extra ventilation in there. But mabey that's what they call a draft.

I feel like leaving it open adds a little extra ventilation in there. But mabey that's what they call a draft.
