Written and illustrated by David Allen Sibley, America's most widely respected bird illustrator and ornithologist, this FoldingGuide™ offers instant access to just what the beginning birdwatcher needs to know. 38 species of wood warbler—both common and rare— found eastern of the Rocky Mountains in North American are covered,including Parulas snd Chats. Each entry includes multiple illustrations, descriptive captions, size, and detailed range maps.