The Encyclopedia of North American Birds describes and illustrates over 1,000 birds, from the Trumpeter Swan to the Bald Eagle. With over 5,000 color photographs, this encyclopedia is for every birder from the novice to the experienced observer.FEATURES: Information about each North American Bird. Over 30,000 color photographs. Intuitive navigation: navigate from Table of Contents or search for words or phrases. The Encyclopedia is stored in your local memory - you get the information fast and do not depend on network/server availability. The Encyclopedia takes about 40MB.