Glaucidium costaricanum
            
               L 6"
          
         
         
            
               Endemic to Costa Rica and
               Panama upland forests
               ...preys mostly on other birds
          
         
            
               © David L.
               Ross, Jr
            
               Macaulay
               Library
          
         
            
               Glaucidium in Greek
               means little owl.
          
         
         
            
               Only owls evolved a nocturnal
               lifestyle with an emphasis on
               acute hearing and stealth.
            
               (John Reilly)