Total Score: 29
Perhaps the best known name in Bird Watching is Roger Tory Peterson. Peterson Birds—A Field Guide to Birds of North America for iPhone and iPad is easy to use and a great start for new birdwatchers. This app allows you to quickly identify birds you see through illustrations. You can read about them, see a map of their habit and upload your photos. And, of course, build a life list of bird sightings. Over 50 million people enjoy this sport – give it a try.