Honeybees never cease to surprise me. There’s been a lot of study about their foraging habits on nectar and pollen, but very little done with honeybees and water storage. I highly recommend reading this article.
After a day enduring hot and dry conditions, several dozen bees — both water collectors and others — transformed themselves into living storage tanks, bulging with water stowed in an expandable region of their gut. The bees also stashed some water in honeycomb cells, but, because water can easily evaporate from the comb, “water-bottle bees” may be a more efficient storage method, says Seeley.
Read more here: Bees spew water at their hive-mates when the temperature rises