This is the book that I reach for before I go to sleep to review some of the birds that I have seen throughout the day - an amazing wealth of information is crammed into a page, and each page is dedicated to a bird. The drawings and artwork are OK, not up to Collins standards, and it would not be my first choice for a field guide, but for some interesting factual information about species that I have encountered. This is the one, and worth having just for that. I love it, and think that the RSPB have a very good and effective range of books out at them moment.