American Bird Conservancy's Field Guide All the Birds of North AmericaBook - 1997
Everything you need to know about North American birds is at your fingertips in this ground-breaking field guide--the first and only guide to successfully organize birds by field-recognizable, instantly-observable characteristics.
With its unique keying system based on how and where birds collect food, spectacular panoramic color illustrations, weather-resistant pocket-size format, emphasis on conservation, and endorsement by the leading bird preservation organization, All the Birds is the single most useful identification guide available.
How to use All the Birds of North America
Step #1: Open to the key for Waterbirds on the inside front cover or to the key for Landbirds on the inside back cover.
Step #2: Select the icon that most resembles the bird being identified, and note the color bar and key number next to that icon. Using the color bar and key number, locate the group of birds within the pages of the book.