I’d been seeing this thing in the backyard from the patio. I thought it was a hummingbird (it moves and flaps its wings just like one).
Today I was able to get close and snap a not-too-blurry picture of it and it looked nothing like a hummingbird.
After some googling, it turns out to be a hummingbird hawk-moth.
I’d never heard of them. Half-creepy, half-cool little buggers they are.