The sight of bees swarming is sure to scare a lot of people. However, there really shouldn’t be any cause for initial concern, as bees that do this are generally in a good mood. To help you better understand why bees swarm, here’s what’s really happening in detail:
As the weather warms up during the summer, a bee colony expands, because the queen produces more workers. In a single colony, there may be 50,000 worker bees busy doing their jobs, such as foraging, regulating hive temperatures, feeding the queen, and more. The queen bee communicates to every bee with her pheromones, which lets the bees know what to do. Eventually, the bee numbers will become so great that not all bees will have access to the queen, compelling them to create a new queen bee of their own, so they can receive their much needed pheromones.
Eventually, the old queen will have to take off to establish a new nest, allowing for a new queen to emerge. When she leaves the nest, the bees will start to swarm to protect her.
Swarming bees that aren’t creating a nuisance are best left alone—as they’re likely to disappear on their own once they find a new home. However, if the bees are causing harm, you can always call your friendly neighborhood bee removal service to get rid of them.