The list author says: "Pop-up books are works of art that can bring a subject to life as no ordinary book can. I've collected some fine recent pop-up books that attest to my strong interest in natural history, although a few stray outside that line because I found them irresistible."
"This book has actual bird songs embedded in the pages. Close your eyes and listen and you will be transported anywhere you have heard these birds. List to the California Quail calling "chicago" and you can be in California in a flash."