Remove the swarm now. Why do I suggest removing the swarm ASAP? Because bees can move into less desirable places where removal and relocation (or even extermination which I don’t recommend) will become very difficult to properly remove the hive. The hive is explained in more detail below and you will see why it becomes difficult for even an exterminator to properly finish. They may move on, which is something a lot of other bee removal professionals will tell you which I agree; however, it is a gamble and once the bees move into difficult spot to remove the price of removal increases.
Bee swarms are amazing! These creatures are flying through the air just as you have seen in cartoons; however, they are not flying in a cloud to chase people this is actually their most docile state. The bee swarm is flying through the air to find a place to land and ultimately live and build the hive. A bee swarm will land on the surface of anything that is stable and that they can attach themselves to, which usually is a tree, the eves of a house, or under a porch. The bees can still sting but is less likely in the swarm phase because each bee is full of honey and they do not have a hive to defend. They land and hold onto each other by the legs called “festooning”. The big football to beach ball sized mass is also engineered to withstand high wind speeds. Once they land you will observe them hanging together for 1-3 days. Some bees will still fly away from the swarm to get food and water and then return flying in and sticking to the swarm. The queen is typically nestled somewhere in the middle of the swarm protected.
The Hive – Once the bees have decided to make the area their home they will start drawing (building) the honeycomb right under the surface of the objects of which they are hanging. This is the honeycomb and at that point it has become a hive. Eventually the bees will store honey in the honeycomb, but also other essentials! The worker bees will store honey, pollen, bee bread for use later in the honeycomb. The queen bee will eventually start lying eggs throughout the hive as well usually in a spiral pattern of baby worker bees. The comb where the baby bees are stored is call brood comb. She can also lay drone babies. Drones are the male bees that mate with queens. The hive is difficult to deal with in removal because it is temperature sensitive and needs to be properly handled to allow the babies to survive and the honey to not melt in hot weather. This fact is why even an exterminator needs to know what they are doing. If they simply exterminate the hive and do not properly remove the left over comb then it will melt, rot, stink, attract maggots, and possibly even run honey down your walls attracting more bees, and essentially guaranteeing more bees coming to your area in the future.