Adult white tern (Gygis alba) with squid in its beak, Lord Howe Island, UNESCO World Heritage Site, New South Wales, Australia, Pacific

Adult white tern (Gygis alba), at the Belvedere on Makatea, French Polynesia, South Pacific, Pacific

Adult white tern (Gygis alba) with fish in its bill in Toarava, Fakarava, French Polynesia, South Pacific, Pacific

Adult elegant tern (Thalasseus elegans), looking for fish on Isla Carmen, Baja California Sur, Sea of Cortez, Mexico, North America

Adult elegant tern (Thalasseus elegans), looking for fish on Isla Carmen, Baja California Sur, Sea of Cortez, Mexico, North America

Adult elegant tern (Thalasseus elegans), looking for fish on Isla Carmen, Baja California Sur, Sea of Cortez, Mexico, North America

Adult elegant tern (Thalasseus elegans), looking for fish on Isla Carmen, Baja California Sur, Sea of Cortez, Mexico, North America

Adult Antarctic tern (Sterna vittata) plunge diving for food in Grytviken, South Georgia, Polar Regions

An Arctic Tern, Sterna paradisaea, that has been ringed, on Inner Farne, on the Farnes Islands, off Seahouses in Northumberland, UK.

Antarctic tern (Sterna vittata) adult bird with krill in its beak, South Georgia, South Atlantic Ocean, Polar Regions

Caspian Tern (Sterna caspia), adult, Corpus Christi, Coastal Bend, Texas, USA

royal tern flock group of birds taking off from shore wings spread sea in background outdoors horizontal format

White-winged Tern in a colony, Rakamaz Hungary