Written and illustrated by David Allen Sibley, America's most widely respected bird illustrator and ornithologist, this waterproof folding guide covers 50 species of Ducks, Geese and Swans found in eastern North America.Each entry features multiple illustrations, descriptive captions, size references, detailed range maps, and seasonal presence information, giving birders everything they need for quick and confident identification in the field. Laminated and built to last, it fits easily into any pocket or bag, making it the perfect companion for any outdoor adventure where raptors might be spotted.