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   Cliff Swallow
 
 Petrochelidon pyrrhonota
  UVU Campus
 Orem
, Utah
 June 2008
  
 by Wayne Whaley
 ©Wayne Whaley
   Cliff Swallow
 
 Petrochelidon pyrrhonota
 "Hall of Flags"
 UVSC Campus
 Orem
, Utah
 27 May 2005
  
 by Wayne Whaley
 ©Wayne Whaley

  
 Cliff Swallow
 Petrochelidon pyrrhonota

 Laundromat at
 Henry's Lake State Park Road
 Idaho
 16 Jun 1995

 by Margaret T. Sanchez
 ©Margaret T. Sanchez

   Cliff Swallow
 
 Petrochelidon pyrrhonota
 Near Spanish Fork, Utah
 16 May 2007
  
 by Ryan Houston
 ©Ryan Houston