Sterna zampenere (Sterna nilotica)
by Stefano Guiducci
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Gull-Billed Tern . Sterna nilotica
by SWBirder
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Sandtärna - Gull-Billed Tern Sterna nilotica
by Jesper Segergren
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Gull-billed Tern (Sterna zampenere)
by Daniele Occhiato
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Gull-billed Tern
by Greg Lavaty
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Gull-billed Tern (Sandtärna)
by S.Stenlund
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Gull-billed Terns
by Margaret Sloan and Bret Mossman
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Gull-billed Tern
by Christer Sundström
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Gulls, Terns, Skuas and Noddies
by Wong Tsu Shi
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My Dutch birds life list
by Rob Hoeben
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