National Geographic Field Guide to the Birds of North America Sixth Edition

"NGFieldGuidetotheBirdsofNorthAmerica,6thedition"containsthemostall-newmaterialsincethefirsteditionwaspublishedmorethan25yearsago.Thelatesteditionwillincludethefollowing:200newartfigures;firsteversubspeciesmapsinafieldguide;inclusionofextensivemigrationsinformationoverlaidonspeciesmaps;field-marklabelsonallartwork;textupdatestoincludenewspecies;reorganisationreflectingtaxonomicchangesinthebirdcommunity;redesignoflayoutforgreaterclarity,organisation,readability;and,increasedpagecount(from504to576)allowsforflexiblelayoutredesignandinclusionofnewmaps.