This is a link to yet another of those huge-flock-of-starlings videos, where a bewildering number of starlings do lots and lots of coordinated – but not militarised, if you get my drift – swirling.
The only slightly unusual thing about this video is how very numerous this particular assemblage of starlings was, and, especially, how very black they manage, or the guy processing the video manages, to turn large chunks of the evening sky. Worth just over a minute of your time to watch.