This book is fantastic, and it has really set the standards for identification guides to come. Furthermore it has a size that makes it possible for you to bring it with you in the field.
The book has absolutely everything you need to know about seabirds. It is written in a very logical way and the plates are very good. The first 23 pages are an introduction to the subject, an overview of the glossary etc. Pages that makes it possible for you to understand the describtions of the birds later in the book - even if you are a beginner.
After the introduction there is 88 plates with drawings of all the seabirds in the world, including subspecies. All the plates are in colour and has been drawn from field notes and photos. The paintings are great and they will be a very good help when you are out there doing the birding.
After the section with the plates there is describtions of all the birds. After the describtions there are distribution maps. The describtions are very good, but the maps could have been slightly bigger, in order to give the reader a better chance to find out the (more or less) exact distribution of the species.