A field edition of Harrison's definitive seabird identification guide, featuring 740 color photographs. It illustrates all the world's seabirds, many in a variety of plumages. The book also contains a convenient key to identifying the confusing albatrosses, petrels and other tubenoses, as well as range maps and information about habitats and distribution. This is the book that you'd carry on any sea voyage; our ten-year-old edition has been everywhere.  (FG16, $29.95)