Listen to and learn hundreds of bird songs and calls from across the continental United States, with up to 34 seconds of song for each bird, and alternative recordings for some birds. Choose a state or group of states then sort the bird sounds in a variety of ways. Sort by song style to compare birds that hoot and coo, with birds with high pitched songs, or you might like to sort the birds by commonness, so you can listen to the most common ones first, then move on to less frequent backyard…