Delve into the fascinating world of active matter with this comprehensive lecture on the Physics of Flocking. Join Professor Francesco Ginelli from the University of Insubria, Italy, as he delivers the second class in a series exploring the collective behavior of self-propelled particles. Learn about the fundamental principles and mathematical models that describe flocking phenomena in nature, from bird flocks to fish schools. Gain insights into the latest research and theoretical frameworks in this rapidly evolving field of physics. Part of the School on Active Matter organized by ICTP-SAIFR, this 1 hour and 43 minute session offers an in-depth exploration of the subject, suitable for graduate students and researchers interested in complex systems and non-equilibrium physics.