Bees Know the Summer Solstice

In 20 18, my bees will begin to prepare for winter on friday, june 20 second. They lower their metabolism by creating a cloud of carbon dioxide in the hive. All of this preparation takes time to survive winter. The swarm starts to change its behaviors, from brood patterns to pollen co ction and comb creation,. Not when the weather starts getting cold, but in the middle of summer. And not just on some random date, but on a completely predictable day.