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   Black Tern
   Chlidonias niger
 Rich County, Utah
 4 Jun 2014
    
 by John Crawley
 ŠJohn Crawley
   Black Tern
   Chlidonias niger
 Rich County, Utah
 4 Jun 2014
    
 by John Crawley
 ŠJohn Crawley
   Black Tern
   Chlidonias niger
 Rich County, Utah
 4 Jun 2014
    
 by John Crawley
 ŠJohn Crawley
   Black Tern
   Chlidonias niger
 Near Randolph
 Rich County, Utah
 28 May 2007
    
 by Paul Higgins
 ŠPaul Higgins
   Black Tern
   Chlidonias niger
 Willard Bay
 Box Elder County, Utah
 6 Aug 2006
    
 by Paul Higgins
 ŠPaul Higgins
   Black Tern
   Chlidonias niger
 Willard Bay
 Box Elder County, Utah
 6 Aug 2006
    
 by Paul Higgins
 ŠPaul Higgins
   Black Tern
   Chlidonias niger
 Transitioning from alternate to basic plumage
 Willard Bay
 Box Elder County, Utah
 6 Aug 2006
    
 by Paul Higgins
 ŠPaul Higgins