Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A step above the rest

I have an older edition of this book and must say that it's the best field guide available. It's a true classic and is always the one that goes with me out in the field. There's nothing missing. The bird drawings are truly the best I've seen in a bird identification book. It's also the easiest to carry along when I go birding. A step above all of the others. Roger Tory Peterson truly produced an indispensable field guide.