Is it a bird? No
Is it a plane? No

It's Lockheed skunkworks
It wasn't that fast but still lucky to take a pic. And if the clouds didn't open up a bit it wouldn't have been noticed at all.
But dayum. I'd loooove to know what fancy toys those guys and gals are playing with.
And fo sho it wasnt't https://www.youtube.com/watch?v=pnr_XYr-wsY 😀😀