"If a unicorn frolics in the forest with no one to hear it, then is the unicorn imaginary?"  Not necessarily!

Expert unicorn spotters can “see” more unicorns with their eyelids shut than the average person can see with eyes wide open.  That’s because they are intimate with the sounds unicorns make.  A Field Guide to Identifying Unicorns by Sound (presented in an eco-friendly, low-wattage palette) will help you to identify the various calls of the mysterious unicorn as it frolicks in its natural environment.  Along the way, you will become better acquainted with unicorns’ habits, eccentricities, antics, attitudes, and manners.  Before you know it, encountering unicorns will become second nature.  Hearing is believing!