Ole Jorgen Liodden / Arctic tern (Sterna paradisaea) attacking an Arctic Fox (Vulpes / Alopex lagopus) protecting its nest site, Spitsbergen, Svalbard, Norway. Highly commended, MAMMALS, GDT 2011 competition

Marie Read / Arctic terns (Sterna paradisaea), two in flight over nesting colony in field of buttercups (Ranunculus sp.), Keflavik, Iceland. Digital canvas expansion.

George Sanker / Arctic tern (Sterna paradisaea), two fighting in mid-air. Machias Seal Island, New Brunswick / Maine, Canada / USA. July.

Ann & Steve Toon / Arctic tern (Sterna paradisaea) with sandeel. Inner Farne, Northumberland, UK. July.

Sven Zacek / Arctic tern (Sterna paradisea) sitting on its nest surrounded by various coastal colors. Harjumaa, Estonia. June.

Bruno de Faveri / Arctic Tern (Sterna paradisaea) with begging chick, Farne Islands, England, United Kingdom

Ole Jorgen Liodden / Arctic tern (Sterna Paradisaea) flying, Svalbard, Norway, July.

Markus Varesvuo / Arctic Tern (Sterna paradisaea) hovering in flight, June, Iceland. Magic Moments book plate.

Theo Bosboom,Theo Bosboom / Arctic tern (Sterna paradisae) on telegraph lines, near a small village on the Reykjanes peninsula in the south west of Iceland, June

Orsolya Haarberg / Arctic tern (Sterna paradisaea), adult feeding young. Jokulsarlon glacial lagoon. Iceland. August 2008

Cyril Ruoso / Raggiana Bird-of-paradise (Paradisaea raggiana) portrait, native to Papua New Guinea

Paul Hobson / Arctic tern (Sterna paradisaea) two fighting in the air, Scotland, UK July