We recommend setting your speakers to a fairly low setting to listen to the natural sounds on the web pages.  Louder sounds can be distracting.  For each season, virtual calling animals were placed at various points along the trail, and your ability to hear them varies with your position on the trail.  Natural sounds are most numerous and varied in the spring and least numerous in the winter.  In the table below you can look up the page that shows the season and station where you are located on the trail, and the calling animals will be shown.  Calls are listed in the approximate order that they call on the sound segment.  Louder sounds are bolded.