Buzzy Bees

We arrived home safely yesterday, and today we got stuck into 2 weeks of household chores.
Mrs M did the laundry while I mowed the grass.

I noticed before we left that there was a small hole in the grass, and there were a couple of bees buzzing around it.
Today there were 6 or 7, so I guess we have a bees nest in our grass.
I didn't know bees did that?