The term for a group of bees is a swarm. A swarm typically refers to a large number of bees, particularly honeybees, that gather together, often during the reproduction phase of their lifecycle. This phenomenon occurs when a queen bee leaves the hive with a portion of the worker bees to establish a new colony. Swarm behavior is essential for the species' reproduction and survival, allowing them to explore new environments for nesting. Beekeepers often observe swarming as a natural behavior and may capture swarms to prevent loss of bees from their hives.