The Messenger is an engaging and visually thrilling ode to the beauty and importance of the imperilled songbird, and what it means to all of us on both a global and human level if we lose them. Humans once believed that birds could carry messages, their presence was meaningful. They have helped predict the change of seasons, the coming of storms and the rise of toxins in the food chain. But human-made perils are devastating these airborne music-makers. Once again they have something to tell us, and the message is not a comfortable one.