National Geographic Field Guide to the Birds of North America, 7th EditionThis fully revised edition of the best selling North American bird field guide is the most up to date guide on the market. Perfect for beginning to advanced birders, it is the only book organized to match the latest American Ornithological Society taxonomy. With more than 2. 75 million copies in print, this perennial bestseller is the most frequently updated of all North American bird field guides. Filled with hand painted illustrations from top