ID Toolkit
April 2008
David Allen Sibley
Artist David Allen Sibley is the author of the bestselling Sibley Guide to Birds, Sibley's Birding Basics, and Sibley guides to birds of eastern and western North America. His first article for Birder's World (now BirdWatching), a profile of St. Marks National Wildlife Refuge in Florida, appeared in our August 2006 issue. His column "ID Toolkit" appears in every issue of the magazine.

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Look for tail shape and pattern to identify warblers high overhead
By David Allen Sibley
Published: March 1, 2008
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