This guide gives you the tools to identify warblers more easily than ever before. It provides extensive comparisons of species by plumage, voice, flight pattern and behavior. It will help you recognize the birds from any angle, in any season, even if you only have a partial view. The book is lavishly illustrated with many photos, quick finder charts, maps, and sonograms. Birders will find the multiple views of the birds from many angles useful in helping them to spot and compare the distinguishing features of the different species. The vocalization finder includes songs, chip calls and flight calls for all species. The book covers the 56 species found in the United States and Canada.