I'm afraid to breed until spring now dont want to lose whole litters. It gets down to -30 here at times, although normally the overnight is in the negative single digits. And it is almost always very windy. My nest boxes are enclosed cat litter boxes and the NZW does are in an outdoor hutch.. which has a "hide box" but other than that no wind break. (They can all fit into the hide box) The rex does and growing popples are in the barn and its not very drafty in there. I'm working on finishing a 8x3 hutch for grow out space- it isn't done yet but when it is it will go on the lee side of the barn. Still will get weather but not as much. Is it safe to breed? If the does kindle in the middle of the night will they be able to keep them warm enough until I get out there in the morning to bring the popples in the house? Popples stay with their moms until they are 8wks. And I don't mind bringing them out to feed twice a day- its that first night I'm worried about.