Forster’s Tern in alternate (breeding) plumage is very similar to Common Tern, but basic plumage birds have a unique back face mask that includes the eye.
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Forster’s Tern – non breeding
Green Cay Wetlands, Boynton Beach, FL
January 23, 2013 ©John Schwarz
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Forster’s Tern doing barrel roll to shake off water
Green Cay Wetlands, Boynton Beach, FL
January 23, 2013 ©John Schwarz
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Forster’s Tern – non breeding
Green Cay Wetlands, Boynton Beach, FL
January 23, 2013©John Schwarz
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Forster’s Tern – non breeding
Green Cay Wetlands, Boynton Beach, FL
January 23, 2013©John Schwarz
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Forster’s Tern
Faulkner’s Island, Long Island Sound, CT
August 11, 2006©John Schwarz
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Forster’s Tern
Valencia Cove, Boynton Beach, FL
January 6, 2015©John Schwarz
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Forster’s Terns
Valencia Cove, Boynton Beach, FL
January 6, 2015©John Schwarz
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Forster’s Terns
Valencia Cove, Boynton Beach, FL
January 6, 2015©John Schwarz
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Forster’s Terns
Valencia Cove, Boynton Beach, FL
January 6, 2015©John Schwarz
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Forster’s Tern – size comparison with Royal Tern
Wellington, FL
December 30, 2018©John Schwarz
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Forster’s Tern
Fort DeSoto Park, St. Petersburg Beach, FL
April 27, 2006 ©John Schwarz
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Forster’s Terns
Lake Okeechobee, FL
April 6, 2005 ©John Schwarz
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Forster’s Terns
Lake Okeechobee, FL
April 6, 2005 ©John Schwarz
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Forster’s Tern
Lake Okeechobee, FL
April 6, 2005 ©John Schwarz
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Forster’s Terns
Lake Okeechobee, FL
April 6, 2005 ©John Schwarz
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Forster’s Terns – molting from basic into alternate plumage
Lake Okeechobee, FL
April 6, 2005 ©John Schwarz
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Forster’s Tern
Lake Okeechobee, FL
April 6, 2005 ©John Schwarz
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Forster’s Tern
Green Cay Wetlands, Boynton Beach, FL
January 19, 2007 ©John Schwarz
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Forster’s Tern
Everglades NP, FL
February 13, 2012©John Schwarz
