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The text details all aspects of identification, including plumages, voice, behavior, seasonal movements, and distribution. There are also discussions about issues of speciation and racial variation within the genus, based on new DNA research to assess taxonomic relationships within the group, as well as explanations of conservation issues affecting the group. The book presents an impressive collection of photographs and line drawings, accompanied by an exceptionally beautiful set of thirteen color plates that show each species in a variety of plumages.
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