Swarming bees may look alarming, but it’s a natural, peaceful part of their life cycle. As the old queen leaves to start a new colony, bees may temporarily gather on trees, fences, or even mailboxes. Scout bees search for a safe new home—far from human activity. If left undisturbed, swarms usually move on within a day. No need for fear or panic—just give them space and let nature do its work.