We have a flying creature in our neck of the woods that looks like a wasp. For a great photo of the bug look here. It’s called a mud dauber (I always call it a mud whomper; don’t ask me why.) How do I know we have them? They build pueblos of mud dwellings just about anywhere.
Mud daubers are solitary wasps, they are not social and do not live in colonies. Females construct nests of mud divided into cells provisioned with several spiders which she has paralyzed with her venom.
Eventually this mass of tubes is about 3-4″ in diameter and is entirely plastered over with mud. The female then selects another site and starts over. They’ve built a collossal condo on our (broken) porch light.
These wasps do not defend their nests, and only rarely sting so it’s not difficult to just knock the mud tubes down.
What are your bugs building?