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.)