What does the main role of drone bees help to ensure for the hive?

The main role of drone bees is to ensure the reproductive success of the hive. Drones are male bees whose primary function is to mate with a queen during her mating flights. This mating is crucial for the genetic diversity and overall health of the hive. After the queen mates, she stores sperm from the drones in her spermatheca to fertilize eggs throughout her life. Drones do not participate in foraging for nectar, producing honey, or defending the hive, as these tasks are typically carried out by worker bees. In this way, the reproductive role of drones is vital for the continuity and sustainability of the colony.