| Adults | Immature | ActionAction 2 |  
  

  
   Western Gull
   Larus occidentalis
 Farmington Bay
 Davis County, Utah
 13 Feb 2013
  
 by John Crawley
 ŠJohn Crawley
   Western Gull
   Larus occidentalis
 Farmington Bay
 Davis County, Utah
 13 Feb 2013
  
 by John Crawley
 ŠJohn Crawley
   Western Gull
   Larus occidentalis
 Non-breeding Adult
 Big Sur, California
 10 Oct 2006
  
 by Joel Beyer
 ŠJoel Beyer
   Western Gull
   Larus occidentalis
 Bolsa Chica Ecological Reserve
 Huntington Beach, California
 20 Jan 2013
  
 by Kendall Brown
 ŠKendall W. Brown
   Western Gull
   Larus occidentalis
 Bolsa Chica Ecological Reserve
 Huntington Beach, California
 20 Jan 2013
  
 by Kendall Brown
 ŠKendall W. Brown
   Western Gull
   Larus occidentalis
 Breeding Adult
 Bear River MBR
 Box Elder County, Utah
 8 Jul 2008
  
 by Jim Pawlicki
 ŠJim Pawlicki
   Western Gull
   Larus occidentalis
 Non-breeding Adult
 Farmington Bay
 27 Feb 2007
  
 by Paul Higgins
 ŠPaul Higgins