Tag: Ham Wall


Alex and Lisa have put together a remarkable video

Yesterday, in came an email from my son, Alex, about an amazing starling murmuration at the Royal Society for the Protection of Birds (RSPB).

Lisa took the video and together they uploaded it to YouTube.


Having watched the amazing video I then did a little bit of research. I came quickly across the science of murmuration and have included it below.

Murmuration refers to the phenomenon that results when hundreds, sometimes thousands, of starlings fly in swooping, intricately coordinated patterns through the sky.

Maybe you’ve seen a murmuration video before. But this one is especially beautiful. It was shot earlier this month in Wales, at Cosmeston Lakes in the Vale of Glamorgan, and posted on Facebook by the BBC Cymru Wales. (It’s not included, Ed.)

It’s all about science. Just how do the starlings manage to fly in such an amazingly coordinated way?

A few years ago, George F. Young and his colleagues investigated starlings’ “remarkable ability to maintain cohesion as a group in highly uncertain environments and with limited, noisy information” — a nice description of what goes on in a murmuration.

Going in, Young et al. already knew that starlings pay attention to a fixed number of their neighbors in the flock, regardless of flock density — seven, to be exact. Their new contribution was to figure out that “when uncertainty in sensing is present, interacting with six or seven neighbors optimizes the balance between group cohesiveness and individual effort.”

Young et al. analyzed still shots from videos of starlings in flight (flock size ranging from 440 to 2,600), then used a highly mathematical approach and systems theory to reach their conclusion. Focusing on the birds’ ability to manage uncertainty while also maintaining consensus, they discovered that birds accomplish this (with the least effort) when each bird attends to seven neighbors.