You can read David Sibley's comments about his forthcoming revised and improved "Guide to Birds," and see some of its pages, thanks to BirdWatching magazine.
The magazine's Web site offers a recent interview with Sibley, and a look at 10 pages from this second edition.
Go to http://bit.ly/1aGfxKh
I've just read the interview and looked at the sample pages. The changes are noteworthy. This truly is a new and improved edition. Not that I don't have enough field guides, but I'll buy this one when it comes out in March. Thanks to BirdWatching magazine and editor Chuck Hagner for this preview.