Instruct: Classify Amazon reviews into positive or negative sentiment
Query: If you want a field guide buy a field guide

The previous reviewer criticised this for being too heavy to take to the field. That's hardly what it's for! To get 900 birds and this much information into a field guide you had to have had a free magnifying glass to read it. As to complaints that some of its political geography is outdated, Pshaw! A book as good as this takes years to prepare, it's never going to be able to follow the fast changing countries of Eastern Europe. It's irrelvant if Czechoslovakia doesn't exist as a single political entity anymore, everyone knows what area it refers to.This is a superb achievement but it needs to be judged for what it is not what it doesn't try to be!If you want a good European bird field guide, the recent Collins book is probably the best field guide for any region ever.