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   Trumpeter Swan
   Cygnus buccinator
 Madison River
 Yellowstone National Park
 Wyoming
 25 Aug 2018
    
 by Cliff Miles
 ©Cliff Miles
   Trumpeter Swan
   Cygnus buccinator
 Yellowstone NP, Wyoming
 December 2005
    
 by Marlene Foard
 ©Marlene Foard
   Trumpeter Swan
   Cygnus buccinator
 Antelope Island Causeway
 Davis County, Utah
 7 Nov 2012
  
 by Richard Young
 ©Richard B. Young
   Trumpeter Swan
   Cygnus buccinator
 Yellowstone NP, Wyoming
 June 2004
     
 by Marlene Foard
 ©Marlene Foard