Bee nest in backyard
Thanks for your question about bees. Your assumption is correct. These are not aggressive bees (and we need all the pollinators we can keep!) Here's a link to a similar question posed on Ask an Expert a couple of years ago, with bees taking up residence in a birdhouse.
Here's a link to a valuable article about how you can help bees--regardless of the type--in your yard.
Hope these are helpful. Good luck!