Bird watching is one of the most popular hobbies in the U.S. and spring offers plenty of opportunities to take part. Whether beginner or experienced, our PC Mike Wendland says these apps can help you get out there and have fun doing what is also known as “birding.” Song Sleuth helps you identify birds by their songs. You record and identify the songs of nearby birds through your smartphone’s microphone, similar to the way speech recognition software works, only tailored specific to the acoustical characteristics of bird songs. It also includes a bird reference guide. The app is $9.99 for iOS with an Android version on the way later in…