In celebration of the centennial of Roger Tory Peterson's birth, comes a historic collaboration of renowned birding experts and artists to preserve and enhance the Peterson legacy. Combines the Peterson field guide Eastern Birds and Western Birds into one volume. Digital updates to Peterson's original paintings reflect the latest knowledge of bird identification, new maps with the most up to date range information and rewritten text to cover the US and Canada in one guide. Colour illustrations, maps, 528pp. 2008.