Laughing gulls Larus atricilla, Royal terns Sterna maxima Location: Celestun wildlife sanctuary, Yucatan, Mexico Year: 2005 Merckslides catalogue number: 20(04) -21670 Comments:

Laughing gull Larus atricilla (winter) Location: Smithsonian Environmental Research Center - near Edgewater, MD Year: 2011 Merckdigitals catalogue number: 04-74692 Comments:

Laughing gull Larus atricilla (winter) Location: South Bethany Beach, DE Year: 2014 Merckdigitals catalogue number: 04-82589 Comments:

Laughing gull Larus atricilla (winter) Location: South Bethany Beach, DE Year: 2014 Merckdigitals catalogue number: 04-82590 Comments:

Laughing gull Larus atricilla (sumer adult and fledgling) Location: South Bethany Beach, DE Year: 2014 Merckdigitals catalogue number: 04-82599 Comments:

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