National Geographic Field Guide to the Birds of North America

National Geographic's Field Guide to the Birds of North America is the most comprehensive, up-to-date and authoritative field guide on the market. This 6th edition is a birder's perfect companion, featuring new illustrations, new identification pointer labels on all art, subspecies listing, up-to-date taxonomic organisation, new species information, migration overlays on range maps and a brand new section of subspecies maps.