The Warbler Guide revolutionizes birdwatching, making warbler identification easier than ever before. For more information, please see the author videos on the Princeton University Press website. Covers all 56 species of warblers in the United States and Canada! Visual quick finders help you identify warblers from any angle. Detailed species accounts show multiple views with diagnostic points, direct comparisons of plumage and vocalizations with similar species, and complete aging and sexing descriptions. Flex cover, 560 Pages, 6.5 X 1.6 X 8.6 inches