Written and illustrated by David Allen Sibley, Americas most widely respected bird illustrator and ornithologist. 53 seabirds are covered, including shearwaters, gulls, terns, scoters, grebes, loons and more. The range includes offshore areas from Alaska to Mexico. Each entry includes multiple illustrations, a descriptive caption, size, range, seasonal occurrence, all taken from the award-winning The Sibley Guide to Birds, 2nd Edition.