The original 10' x 16' Woods house does have the west side window towards the back for light and ventilation. BUT, the side windows should be made to easily open and close. Mine just slide sideways. If weather is anticipated, just close it. One or both can be left that way for days on end if need be. Same with the monitor windows up top. But even if it did rain in now and then, the world will keep spinning. In a really dry climate, it might actually help with litter management.
Regardless of what house is used, -40F is extremely cold for most breeds of birds. But birds built for the cold.....those with small combs or pea combs can deal with it fine....at least for a few nights.
Regardless of what house is used, -40F is extremely cold for most breeds of birds. But birds built for the cold.....those with small combs or pea combs can deal with it fine....at least for a few nights.