I just got around to trying this app called Merlin which identifies birds just by listening to them singing and tweeting. This thing is pretty sick and works awesome! The Merlin app is free from Cornell. It will record and identify birds by their calls in a matter of seconds. In under a minute, it could identify 6 different birds from the backyard!.I really like using the Sound ID function, just sitting out back with it listening and seeing the different bird species pop up that it identified. It also seems to do a great job of ignoring any background noise. How did I not know about this sooner?? Download it!