This revised edition of Harrison's guide to seabirds of the world, with full colour paintings of 1600 birds covering 312 species, has been updated to include recent research. The illustrations usually show several views of a species and each bird has been given an individual account. The text treats each species in depth, stressing the various distinct colours forms within species and closely examining the sub-species. Flight, behaviour, distribution and similar species are fully discussed. Each illustration has a facing caption page which is cross-referenced to the main body of the text for quick identification.