Get moving! The mystery of animal group behavior

It’s not uncommon to see a flock of birds, startled by some perceived threat, take to the air in a highly coordinated flight. Similar behavior can be observed in schooling fishes where each fish, mimicking the movement of its neighbor, turns, darts or zigzags away from a threat with uncanny precision. In both cases, it seems as if the respective groups — the flock and the school — are acting as a single, unified entity