winter chicken question
Do I close out all cold air in the winter or leave the ventilation window open at the top in the gable? The window is about 1.5' x 1.5'. My chickens are in a small insulated, shed with a slanted 10' ceiling. We had -16C (3F) temps last night and it's just going to get colder from here.
I'm worried about them now, I can't imagine what I'm going to be like when we get really cold temps in Jan-Feb! I'm considering a small electric heater on very low, just enough to get it up above 0 degrees F. Would that help or is it better to just leave the temps in there alone and let the chickens deal with it? We get occasional -25F temps in winter. Some year's we get the odd drop colder than that. It hit -40 about 5 years ago.
Will the water heater be enough to keep the temps in the reasonable (above 0 deg F) range?
Does anyone else live in this far north with chickens? What do you do in the -20F temps in winter?