Bluebird's post brings up an excellentpoint. Many breeds have no problem reproducing in extremelycold weather as long as they are well protected and have plenty ofnesting material.
However, as she pointed out, many of the smaller breeds do notreproduce well during this time of year, even in a heated rabbitry.
We keep our rabbitry heated to 40 degrees during the winter months,putting does with litters on the top row of cages closer to the heatlamps.
As SLR pointed out, nest boxes can be brought inside and returned tothe doe for nursing. We used to do this before we had heat inthe rabbitry.
Pam