We do see them occasionally around here too, we call them a Hummingbird moth.
I have a wonderful picture of one, and a huge picture of a tomato worm, they are part of my screen saver. So anyone hanging out in my computer room gets an eye full of close up insects,,,,,,,,
Weve got a lot of hummingbirds at the moment, and the evenings are getting under 70 degrees lately, so assume that they will be leaving us for the warm south soon.
We sure will miss the little 'copters,
Jane