![Not just a flock, but a murmuration!](https://wp-media.patheos.com/blogs/sites/186/2016/02/Starling_murmuration-300x200.jpg)
(Wikimedia Commons; click to enlarge)
This is one of nature’s most astonishing spectacles. And nature offers a lot of spectacles.
Here are two interesting pieces, with video:
“The Startling Science of a Starling Murmuration”
“The Incredible Science Behind Starling Murmurations”
Watch and be amazed.