About two weeks ago I noticed a new wasp nest in my back yard. I generally leave them as long as they aren't interfering with anything, but this nest has suddenly grown quite large and they are swarming when I mow the lawn. From the nest appearance, I was afraid these were bald-faced hornets, but up close they look more like yellowjackets, I'm uncertain of the species. This is as close as I dared to get with the camera.
I am willing to live and let live until October (when the nest is vacated), but I have two concerns that may change my mind:
How large might this nest become?
If I leave them this summer, are they likely to return to the same place next year?