This is an easy to read, nonfiction book, describing the ancient bird which roamed South America 15 million years ago.  The can be described as a walk T-Rex with wings.  The reluctant reader may enjoy this book as it describes what life must have been like for these raptors.  Great illustrations, with graphic images of this hunting bird will probably thrill many readers. Great addition for a library, and a must for a select group of readers.