Why didn’t my bees make it through the winter?

This is a question we are asked multiple times in the spring. As a result, I have had the opportunity to not only observe my own hives, but to also look at a lot of hives belonging to other beekeepers confused and saddened by what they think is the sudden loss of their bees. Was

1st year Beekeeping, Advanced Beekeeping, Beekeeping, March to May Beekeeping, September to December, , ,