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9780292707566
Robert Ridgely, one of the world's foremost ornithologists is Senior Research Ornithologist at the Academy of Natural Sciences of Philadelphia and vicepresident of the RARE Center for Tropical Conservation, as well as a popular leader of South American nature tours Guy Tudor, MacArthur Fellow and a well-known and widely traveled bird artist and naturalistRidgely, Robert S. is the author of 'Birds of South America The Oscine Passerines' with ISBN 9780292707566 and ISBN 0292707568.
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