Why Swarming Evolved Offers Clues on how Intelligence Developed: "Swarming allows groups of animals to accomplish tasks that they can't do alone, such as defending themselves from a much larger predator. . ."Swarming is a complex behavioral trait that increases the chance for survival," Adami said. "Intelligence is an even more complex trait that also increases the chance for survival, so understanding one will help us understand the other."
Swarm Intelligence. By studying army ants — as well as birds, fish, locusts and other swarming animals — Dr. Couzin and his colleagues are starting to discover simple rules that allow swarms to work so well. Those rules allow thousands of relatively simple animals to form a collective brain able to make decisions and move like a single organism.