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.)