Happy to see this thread has been created since it is something I have been contemplating.  I too am new to raising backyard chickies and this will be my first winter to learn what works and what does not.  If I can save myself some grief by learning some tried and true techniques, heck I'm all for that!  Why reinvent the wheel....I am in the process of preparing for the winter.  Hopefully it is another mild one, relatively speaking, of course.  I purchased the buckets with the nipples and deicers just in case.  I have been thinking about how to handle the coop though.  The coop itself is board and batton, I believe is the carpentry term.  There are small gaps within the siding that provides ventilation.  This is great in the summer but it concerns me for the winter.  I was wondering if anyone has used carpenters plastic to surround their coop?  I am thinking it would work similarly to tarp.  Is that the clear plastic I see others posting?  Where do I purchase it, the local home store?  I was thinking of leaving the very top of the coop left unwrapped to allow for the necessary ventilation.  But is that good since my high tier perches are located high.  I haven't completely decided on what type of heat I will offer.  For those extreme nights.  I have looked at black lights, reptile rope and ambient heaters specifically for coops.  Any suggestions?  I currently have a mesh cover that tops my run.  It kept it cool this past summer.  It lies flat and I don't think this will hold up nicely with the weight of snow (I dread it already!).  I am thinking about placing a 2 x 4 with a flat board on top, in the center of the run, to give the mesh a tent appearance so the snow will roll off or at least not accumulate so quickly.  I am interested in whatever ideas are out there.  Keep them coming.  The run itself, ground cover, I am currently incorporating a sundry of materials.  I am using hay, pine chips, cut grass, leaves, twigs.  It's worked out real well.  Should I change this?  They will only be outdoors if there is no snow and the temperatures are fair.  Or should I not baby them so?