YouTube user Cosmic Kitten published this slow motion video on June 1, 2018 but it was originally shared a year ago.

The updated clip has been edited for time, with some identifying markers and text added. I've watched it a few times now, and I don't know what that thing is, so it truly is an "unidentified flying object."

I know that doesn't mean it's an alien craft, but it clearly travels through the frame much faster than the birds fly past. What do you think?