Sibley's Ducks, Geese,& Swans of Western N.A.

Written and illustrated by David Allen Sibley, America's most widely respected bird illustrator and ornithologist, this FoldingGuide offers instant access to just what birdwatchers need to know. 50 waterbird birds are covered: dabbling ducks, diving ducks, geese, swan, and other domestic waterfowl. Each entry includes descriptive caption, size, range map, seasonal occurrence, and multiple illustrations, all taken from the award-winning The Sibley Guide to Birds, 2nd Edition.