Elegant tern (Thalasseus elegans) and Heermann's gull (Larus heermanni) breeding colony, Isla Rasa, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Terns being fed by local guide with back tattoo in the shallow waters of Stingray City, Moorea, Society Islands, French Polynesia, South Pacific, Pacific

Elegant tern (Thalasseus elegans) and Heermann's gull (Larus heermanni) breeding colony, Isla Rasa, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Terns and seagulls on Capitola Beach, Capitola City, Santa Cruz County, California, United States of America, North America

The inner lagoon on Isla Rasa, an important nesting site for terns and gulls, Baja California, Sea of Cortez, Mexico, North America

Royal terns and Laughing Gulls shoreline and beach at Anna Maria Island, Florida, USA

Royal tern, left, Laughing Gulls right shoreline and beach at Anna Maria Island, Florida, USA

Swallow-tailed gull (Creagrus furcatus) in flight in the Galapagos Island Group, Ecuador

Adult Antarctic Tern (Sterna vittata) nesting and mating on Enterprise Island near the wreck of the Gouvernoren, a Norwegian whaler which caught fire and sank in Wilhelmina Bay in 1916, Antarctica.

An adult yellow-footed gull (Larus livens) on the nesting area on Isla San Esteban in the midriff region of the Gulf of California (Sea of Cortez), Baja California, Mexico

Adult Antarctic Tern (Sterna vittata) nesting and mating on Enterprise Island near the wreck of the Gouvernoren, a Norwegian whaler which caught fire and sank in Wilhelmina Bay in 1916, Antarctica

Swallow-tailed gull (Creagrus furcatus) in the Galapagos Island Group, Ecuador

Arctic Tern (Sterna paradisaea) on Hudson Bay, Churchill, Manitoba, Canada. Arctic Terns nest commonly in Northern Manitoba, Nunavut, and the Northwest territories. They defend their nests and young very aggressively against all predators and threats including humans.

Arctic Tern (Sterna paradisaea) on Hudson Bay, Churchill, Manitoba, Canada. Arctic Terns nest commonly in Northern Manitoba, Nunavut, and the Northwest territories. They defend their nests and young very aggressively against all predators and threats including humans.

Elegant Terns (Sterna elegans) and Heermann's Gull (Larus heermanni) at La Rasa Island, Sea of Cortez, Mexico

Kondoi beach, Okinawa

Protection of Arctic Terns, experimental device against gulls, Isle of May, Scotland