So, what is the truth about wintering bee hives? What causes them to winter successfully?
Number of bees?
Density of bees?
Amount of food supply?
Density of food supply?
Young vs. old queen?
How are nucs able to survive, while a larger hive at the same time might starve?
What with changes in climate and available forage, are you noticing changes in when your bees start to swarm? Are your swarm start dates changing? If yes why do you think?
Strong hive weaker hive?
Number of warm days?
Long wet winter / other abnormal conditions?
Average night temperatures...