William Fiennes decided to follow the snow geese on their northward migration from Mexico to the Canadian Arctic, and to write about his travels. What he produced turned out to be about very much more than geese. A blend of autobiography and reportage, it is also a reflection on the nature of homecoming. The sweep of the author's physical adventure forms the backbone for meditations on philosophy, natural science and personal memoir - and "The Snow Geese" serves notice of the arrival of a major new writer.