Espen Bergersen / Aerial view of Whooper swans (Cygnus cygnus) gathering in river, with patterns of sediment deposits, Finland. Awarded with Second Place in the Bird Category of the Nordic Nature Photo Contest 2017.

Roy Mangersnes / Svalbard ptarmigan (Lagopus muta hyperborea) in autumn as the first snow arrives on Svalbard, Norway, April.

Roy Mangersnes / Black-legged kittiwakes (Rissa tridactyla) gathering on top of Monaco glacier, Spitsbergen, Svalbard, Norway, July.

Roy Mangersnes / Svalbard ptarmigan (Lagopus muta hyperborea) still in winter plumage in early July, outside Longyearbyen, Svalbard, Norway.

Roy Mangersnes / Kittiwake (Rissa tridactyla) perched on ice in autumn light, Spitsbergen, Svalbard, Norway, September.

Roy Mangersnes / Glacier calving causing kittiwakes (Rissa tridactyla) to take to the air in panic, west coast of Svalbard, Norway, August.

Roy Mangersnes / Svalbard Ptarmigan (Lagopus muta hyperborea) male flying, Spitsbergen, Svalbard, Norway, March.

Roy Mangersnes / Svalbard ptarmigan (Lagopus muta hyperborea) feeding, Spitsbergen, Svalbard, Norway, March.

Roy Mangersnes / Svalbard ptarmigan (Lagopus muta hyperborea) in snow with winter plumage, Spitsbergen, Svalbard, Norway, March.

Roy Mangersnes / Little Auk (Alle alle) group on rocks near breeding colony, outside Longyearbyen, Svalbard, Norway, July.

Roy Mangersnes / Brunnich's guillemot (Uria lomvia) breeding colony on cliffs, Alkefjellet, Spitsbergen, Svalbard, Norway, August.

Roy Mangersnes / Arctic tern (Sterna paradisaea) juvenile calling for food, Spitsbergen, Svalbard, Norway, August.