When Bees Swarm they make a Buzzing Sound as we all know. Why do they do this; does it help them in other ways? Does it help them fly; help them attack their targets in a group? Warn those animals near by to get lost like right now, we are coming thru? Or is this sound uses to help in group-flight characteristics to benefit the entire Swarm.

Recently this topic came up in an online think tank and one member asked the question;