The Shorebird Guideby Michael O'Brien, Richard Crossley, & Kevin T Karlson An all new holistic approach to identifying shorebirds. Join the experts in birding by impression, a revolutionary approach to bird identification. Experienced birders use the most easily observed characteristics size, structure, behavior, and general color patterns to identify birds even before looking carefully at plumage details. Now birders at all levels can learn how to identify shorebirds