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   Lesser Scaup
   Aythya affinis
 Male
 Salt Lake County, Utah
 8 Apr 2014
  
 by John Crawley
 ŠJohn Crawley
   Lesser Scaup
   Aythya affinis
 Male
 Farmington Bay
 Davis County, Utah
 13 Feb 2013
  
 by John Crawley
 ŠJohn Crawley
   Lesser Scaup
   Aythya affinis
 Female
 Sandy Fishing Pond
 Sandy, Utah
 4 Feb 2012
  
 by Ronald Walker
 ŠRonald Walker
   Lesser Scaup
   Aythya affinis
 Male
 Bill Williams NWR
 Lake Havasu, AZ
 20 Jan 2011
  
 by Ted Fitzgerald
 ŠTed V. Fitzgerald
   Lesser Scaup
   Aythya affinis
 Female
 Bill Williams NWR
 Lake Havasu, AZ
 20 Jan 2011
  
 by Ted Fitzgerald
 ŠTed V. Fitzgerald