The mysteries of migration and flight itself, as well as the whole fascinating life cycle of the mallard duck, are brought into strong focus through Mr. Darling's text and magnificent pencil drawings. Quietly, he introduces us to one particular duck, Greenhead. With Greenhead's life as a point of departure, he describes a typical year with all its activities and their little to big implications for the life of man. An excellent study book, not to be missed.