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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

gelochelidon nilotica aranea

  1. Gull-billed Tern (breeding plumage)

    Gull-billed Tern (breeding plumage)

    Gull-billed Tern (Gelochelidon nilotica aranea) Six subspecies are recognized with only subspecies aranea being mapped for Texas. Sexes similar. This thick-billed tern is unlike most terns in that it does not depend on on fish. Photographed at Red Fish Bay near Aransas Pass, San Patricio...