Frank wrote:
http://www.ext.colostate.edu/pubs/insect/05517.html

Googling, this one says moth is like a humming bird. I probably have
seen them flitting about.

Yep, that's them, I seen one two days ago. They can easily be mistaken for
a hummingbird while in flight.

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Enjoy Life... Nad R (Garden in zone 5a Michigan)