I agree with the previous post.
Here is a quote from page 80 of Modern Fresh-Air Poultry Houses (1924)
In regards to open-front houses:
" To keep fowls in such a house in climates where the thermometer may drop from zero to 40 degrees below should seem to many poultry keepers the height of folly, because it might seem to risk the health and comfort of the fowl. That has been one of the great mistakes of the poultry industry. The fact is that a house constructed on this principle, if make sufficiently long from front to back, say 18 to 20 feet or more is not only highly comfortable, but affords the best abundance of necessary fresh air. No matter how hard the wind may blow, it cannot penetrate any great depth into the interior of such a house,. During one of the worst wind and rain storms ever experienced in Plymouth County, Mass., Dr. Woods says, in regard to his open-front poultry hose, that ' the wind could not be felt at all in the house at a distance of four feet from the open front. The fowls were comfortable and happy. A little water came in thru the wire screen, but only a very little, and less than one yard of the floor immediately back of the wire front screen receiving a wetting."
I guess people used this method also in Canada with good results.
I was thinking of trying this out on one of our coops.