Follow in the footsteps of London and New York's pigeon flocks to uncover their secret world as never before. Witness the challenges of city life and how the humble pigeon has overcome them! With a world population hundreds of millions strong, feral pigeons are our most familiar neighbors. They have been an ever-present companion to people for millennia, yet despite such familiarity, there's still so much we don't know about the remarkable, resilient pigeon!