The nomadic drives of every creature in search of or in flight from water are set forth here by the writer-scientist team of husband and wife Milne, who have done earlier books on nature. They trace the migration of sparrows, of whooping cranes, the spawning of cod, salmon, whales and follow the death marches of the African springbuck. Accent here is on animals which follow the seasons in mass movements. For the naturalist neophyte or those of seasoned interest -- this book is fascinating and authoritative. (Kirkus Review)