• Naturesongs Digital Recordings from Nature!
  
  More than 1000 digitally recorded natural sounds and photos can be downloaded. All recorded by the author. Includes a link to Costa Rican sights &; sounds.
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• Petersons
  
  Peterson Field Guides(R) - The most informative and practical nature guides available. Includes comprehensive birding resources, complete listing of available guides, and biography of Roger Tory Peterson.
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