Sibley?s Backyard Birds of Desert Southwest A virtually indestructible, waterproof folding guide covers the most frequently seen species of the region, including illustrations, descriptions, size, and range all taken from the award-winning Sibley Guide to Birds. Handy fold-out format: 6 panels each 4? X 9?, laminated Written and illustrated by David Allen Sibley, America?s most widely respected bird illustrator and ornithologist, this Folding Guide offers instant access to just what backyard birdwatchers need to know. 73 backyard birds are covered, including descriptions, size, range, seasonal occurrence, and illustrations, all taken from the award-winning. The Sibley Guide to Birds, 2nd Edition. The Desert Southwest region extends from Reno Nevada in the northwest, southward the Mohave Desert, eastward to eastern Texas and northeastward to the Colorado/New Mexico border. It includes portions of California, Nevada, New Mexico, Utah, and Texas.