The Chirp! family of apps for iPhone, iPod Touch and iPad feature the songs and calls of birds from Western Europe, the USA, and Canada. They are designed to help you learn and identify bird sounds.
Listen to the songs, read the helpful tips, then try the quiz to test your memory. Answer fast to earn a score multiplier and get on the high score table!
And when you need a rest, try the slideshow feature - choose which birds to include, maybe add background bird song, then simply lean back and relax! But the slideshow feature can also help you learn in an informal way - switch the voiceover on, and try to name the sound before the voiceover announces it.