Explore the fascinating world of natural swarms in a thought-provoking 33-minute conference talk delivered by Andrea Cavagna at the International Centre for Theoretical Sciences. Delve into the concept of swarm behavior in nearly four dimensions as part of the "Active Matter and Beyond" discussion meeting. Gain insights into how active matter principles apply to biological systems, particularly focusing on the large-scale migratory behavior of bird flocks. Learn about the latest research in this field and its implications for understanding collective motion in nature. Discover how this innovative approach bridges the gap between theoretical physics and biological observations, potentially revolutionizing our comprehension of complex group dynamics in the natural world.