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This excellent guide, preferred by birding cognoscenti, has made a huge impact and deservedly so. Schematic paintings of birds in all of their plumages are enhanced with a unique circular pattern of informative paragraphs and a range map. A thoroughly revised second edition is due out in 2014. Like the Peterson guides, there are regional Sibleys: The Sibley Field Guide to Birds of Eastern North America and The Sibley Field Guide to Birds of Western North America (both 2003).
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