The Firefly Encyclopedia of Birds, authored by Christopher Perrins, is a comprehensive reference guide covering various topics related to birds, including birdwatching guides and life sciences. Published in 2003 by Firefly Books, this hardcover book contains 640 pages filled with English language content. With illustrations provided by the author himself, this encyclopedia offers a detailed exploration of the natural and science aspects of avian species, making it an essential addition to any coffee table or bookshelf for bird enthusiasts and nature lovers alike.