This is exactly what you want to see when you take your infra-red camera to a bee yard in January in Minnesota. The camera shows the temperature gradient. The "glowing" is heat from the wintering honey bees, keeping the queen very cozy inside the hive. No, bees do not hibernate, but they do cluster tightly around their queen and keep warm as a group by "shivering" their flight muscles. Much like Emperor Penguins, individuals take turns migrating to the outside of the cluster.
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