Two years ago in Rome, I encountered a murmuration of starlings and I was amazed with its overwhelming beauty, changing shape as it moved. Moving of a fish school that you can watch in an aquarium, has the same beauty and the energy.

According to the scientists, their fine movement in a flock is based on the following three simple rules:

• steer to avoid crowding local flockmates
• steer towards the average heading of local flockmates
• steer to move towards the average position (center of...