Source: https://www.youtube.com/watch?v=w63nQY73DIo
Via: http://www.theblackvault.com/casefi...-amateur-astronomer-rome-italy-july-29-2018/#
A bunch of black dots move across the face of the moon.
Tracking them by per-frame differences shows slightly meandering and differing paths.
Which to me simply suggests some birds. They are quite widely spaced though. Can anyone suggest a type of bird that flies like this?