The Sibley Guide to Birds is a guide for the identification of birds found in the North American region as defined by the American Birding Association. The region consists of the continent of North America north of Mexico, including the United States, Canada, and all adjacent islands, but excluding Hawaii, Bermuda, and Greenland. The region also includes offshore waters that are either within 200 miles (320 kilometers), or halfway to the nearest land that is not part of the North American region, whichever is closer.

The guide was written and illustrated by David Allen Sibley , who is unrelated to Charles Sibley. It was published (ISBN 0679451226) in October 2000. It includes 810 species with 350 regional forms.

The National Audubon Society calls it "The new standard of excellence in bird identification guides" [1].

External links

• Sibley's website for the guide
• Updates and corrections to the guide