Massimiliano Magnante/ BIA / White Tern (Gygis alba) pair, Bird Island, Seychelles

Brent Stephenson / White / Fairy Tern (Gygis alba) in flight against a blue sky. Motu Omai, Rangiroa Atoll, Tuamotus, French Polynesia, November.

Sebastian Kennerknecht / White Tern (Gygis alba) flying over beach, Midway Atoll, Hawaiian Leeward Islands, Hawaii

Sebastian Kennerknecht / White Tern (Gygis alba) chick, Midway Atoll, Hawaiian Leeward Islands, Hawaii

Tui De Roy / White Tern (Gygis alba) hovering in search of nest site, Midway Atoll, Hawaii

Oriol Alamany / White tern (Gygis alba) group of three, perched with one flapping wings, Lord Howe island, Lord Howe Island Group UNESCO Natural World Heritage Site, New South Wales, Australia, October 2012.

Oriol Alamany / White tern (Gygis alba), Lord Howe island, Lord Howe Island Group UNESCO Natural World Heritage Site, New South Wales, Australia

Sylvain Cordier / White tern (Gygis alba), perched on a branch, Sand island, Midway Atoll National Wildlife Refuge, Hawaii

Sylvain Cordier / White tern (Gygis alba), in flight, Sand island, Midway Atoll National Wildlife Refuge, Hawaii

Martin Gabriel / Fairy Tern (Gygis alba) pair, Cousin Island, Republic of Seychelles

Martin Gabriel / Fairy Tern (Gygis alba), couple, Cousin Island, Republic of Seychelles

Martin Gabriel / Fairy Tern (Gygis alba), Aride Island, Republic of Seychelles