This is an interesting paper- my concern is why the literature has remained quite for 23 years!!Journal of Theoretical Biology
Volume 128, Issue 3, 7 October 1987, Pages 329-337
Why honeybees rear brood in winter. A theoretical study of the water conditions in the winter cluster of the honeybee, Apis mellifera
thanks, agree, I was interested in getting past the anecdotal stuff of 'yes, queens start laying from late December' and wondered if any trials had been done by examination of colonies but maybe not.A theoretical study.