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   Ring-billed Gull
   Larus delawarensis
 Non-breeding
 Provo Boat Harbor
 Provo, Utah
 18 Dec 2012
  
 by John Crawley
 ŠJohn Crawley
   Ring-billed Gull
   Larus delawarensis
 Non-breeding
 FlowServe, Springville
 Utah County, Utah
 1 Mar 2011
  
 by John Crawley
 ŠJohn Crawley
   Ring-billed Gull
   Larus delawarensis
 Non-breeding
 FlowServe, Springville
 Utah County, Utah
 1 Mar 2011
  
 by John Crawley
 ŠJohn Crawley
   Ring-billed Gull
   Larus delawarensis
 1st Winter
 Provo Boat Harbor
 Provo, Utah
 18 Dec 2012
  
 by John Crawley
 ŠJohn Crawley