Zep, That is one of the reasons why bees collect honey, they metabolize it to generate heat. They all pack together in cold weather, eat honey, and generate heat to stay alive. Example: It was well below zero a few days this winter, and my hive outdoors with a screen bottom survived just fine. I did feed them "bee candy" as they were running low on natural stores (honey + pollen), but otherwise honey bees are equipped to deal with cold.
-Mark
