Instruct: Classify Amazon reviews into positive or negative sentiment
Query: GREAT REFERENCE

Very well organized, comprehensive information. It's very useful and actually quite engrossing. I knew nothing about birds and am doing research for a novel. I first encountered this book in the public library and decided to buy myself a copy of this one among all the other bird books I borrowed. I am not a bird watcher and I don't think I'll take it up as a real hobby, but this book has given me a great appreciation of birds. They are fascinating and truly remarkable creatures.