Bird migration remains perhaps the most singularly compelling natural phenomenon in the world. Nothing else combines its global sweep with its inherent ability to engender wonder and excitement. The past two decades have seen an explosion in our understanding of the almost unfathomable feats of endurance and complexity involved in bird migration – yet the science that informs these majestic journeys is still in its infancy. Pulitzer Prize-shortlisted writer-ornithologist Scott Weidensaul is at the forefront of this research, and A World on the Wing sees him track some of the most remarkable flights undertaken by birds. As our world comes increasingly under threat from the effects of climate change, these ecological miracles may provide an invaluable guide to a more sustainable future for all species, including us.