Some of this was discussed in this thread a year ago:
https://www.backyardchickens.com/threads/northern-lights.1144840/
Not sure we ever resolved it, but point was to try to find out where you cross the line to where you cannot keep birds alive as the rest of us do it, without supplemental light to keep the birds active.
My guess is you are far enough north that your best bet is to move the birds indoors, as nearly all of the commercial flocks do. Supplemental heat and light. One way to do it is to have them live inside a greenhouse.
Do a google/youtube search on "greenhouse, chickens, compost"
Tied to this is an alternative (one I keep saying I'm going to perfect), of using a compost pile to keep the water source from freezing. I think it could work.