GULL CALL.                            
  
                                          
 THE SEAGULL IS  A  METAPHYSICS  TRICK; A 
 WORLD-BUILDER'S  SHORTCUT,  TO  DEFINE A 
 SECTION  OF REALITY AND  IMPLY ITS SIZE: 
 PLACE  A FLOCK OF BIRDS AT THE  EDGE AND 
 MAKE  THEIR  CALLS  TESSELATE  OVER  THE 
 ENTIRE VOLUME                            
                                          
 A  SEAGULL CAN  BE DEFINED BY AS  LITTLE 
 AS  FIVE  VERTICES;  SIX  TRIANGLES.  (I 
 WOULD RECOMMEND HANDLING  IN  SWARMS  OF 
 AT LEAST A DOZEN BIRDS.)