Danny Green / Willow Tit (Poecile montanus) on a snowy branch. Utsjoki, Finland, February.

Danny Green / Waxwings (Bombycilla garrulus), in snow. Finland, March

Danny Green / Roe Deer (Capreolus capreolus) in snow. Flatanger, Norway, January.

Danny Green / European Brown Bear (Ursus arctos) reflected in forest pond in evening mist, Finland, June

Danny Green / Brown Bear (Ursus arctos) in the forest, Finland, June

Erlend Haarberg / Moose (Alces alces), calves near house in winter, Jokkmokk, Sweden, February.

Erlend Haarberg / Scots pine (Pinus sylvestris), in coastal landscape, Efjorden, Nordland, Norway, February.

Erlend Haarberg / Red fox (Vulpes vulpes), on spring snow, Vauldalen, Norway, April.

Erlend Haarberg / Black grouse (Lyrurus tetrix), male calling early in the morning, Norway. May.

Erlend Haarberg / Common reeds (Phragmites australis) on a frozen lake, Sel, Norway, March.

Erlend Haarberg / Arctic fox (Vulpes lagopus), Dovrefjell-Sunndalsfjella National Park, Norway, April.

Erlend Haarberg / Svalbard reindeer (Rangifer tarandus platyrhynchus), Svalbard, Norway, September.

Erlend Haarberg / Rock ptarmigan (Lagopus muta) in flight, Tysfjorden, Nordland, Norway, March.

Erlend Haarberg / Fieldfare (Turdus pilaris), Vauldalen, Norway, May.

Erlend Haarberg / Fogbow over sea ice. Fogbows are similar to a rainbow, but produced by very small droplets in fog or cloud, which diffract light, instead of large raindrops which do not, Svalbard, Norway, July.

Erlend Haarberg / Mountain hare (Lepus timidus) in spring outside a Norwegian house, Vauldalen, Norway, May.

Erlend Haarberg / Mountain hare (Lepus timidus) in spring, Vauldalen, Norway, May.

Erlend Haarberg / Muskox (Ovibus moschatos) males, Dovrefjell-Sunndalsfjella National Park, Norway, February.

Guy Edwardes / Aurora Borealis over Reykjanes Lighthouse, Reykjanes Peninsula, Iceland

Guy Edwardes / Landscape of Thakgil canyon, with waterfall and jagged mountains, Iceland, September.

Guy Edwardes / Aurora Borealis over Reykjanes Peninsula, Iceland, September.

Markus Varesvuo / Red-throated Diver (Gavia stellata) calling, Iceland, June.

Markus Varesvuo / Red-throated Diver (Gavia stellata) taking off, Iceland, June.

Markus Varesvuo / Red-throated Diver (Gavia stellata) portrait, Iceland, June.

Markus Varesvuo / Hazel Grouse (Tetrastes bonasia), Kuusamo, Finland, December.

Markus Varesvuo / Hawk Owl (Surnia ulula) hunting, Kuhmo, Finland, March.

Markus Varesvuo / Great grey owl (Strix nebulosa) Kuhmo, Finland, March.

Markus Varesvuo / Great Grey Owl (Strix nebulosa) Kuhmo Finland, March.

Markus Varesvuo / Great Grey Owl (Strix nebulosa) hunting over snow, Kuhmo Finland, March.

Markus Varesvuo / Goshawk (Accipiter gentilis) plucking a Willow Grouse (Lagopus lagopus) Liminka, Finland, March.

Markus Varesvuo / Golden eagle (Aquila chrysaetus), Kuusamo, Finland, January.

Markus Varesvuo / Golden eagle (Aquila chrysaetus) landing in snow, Kuusamo, Finland, December..

Markus Varesvuo / Bullfinch (Pyrrhula pyrrhula) in flight, Kuusamo, Finland, March.

Markus Varesvuo / Black-throated Diver (Gavia arctica) Vaala Finland, June.

Markus Varesvuo / Black-throated Diver (Gavia arctica) Vaala Finland, June.

Markus Varesvuo / Black Woodpecker male (Dryocopus martius) Finland, February.

Markus Varesvuo / White-tailed Eagle (Haliaetus albicilla) Norway, November.

Markus Varesvuo / Sparrowhawk (Accipiter nisus) adult female, Norway, October.

Ismaele Tortella / Eurasian otter (Lutra lutra) hunting in a shoal of Atlantic herring (Clupea harengus), northern Norway, March

Ismaele Tortella / Northern gannet (Morus bassanus) colony, chick climbing back into nest, with the midnight sun, Norway, July

Ismaele Tortella / White tailed eagle (Haliaeetus albicilla) catching fish, Lofoten, Norway, August.

Ismaele Tortella / Four Eurasian elk (Alces alces) walking through vegetation , Norway, August

Ismaele Tortella / Svalbard reindeer (Rangifer tarandus platyrhynchus) feeding in snow, Svalbard, Norway, March.

Ismaele Tortella / Black-legged kittiwake (Rissa tridactyla) nesting above a window, Lofoten, Norway, August.

Ismaele Tortella / Tracking shot of a Whooper swan (Cygnus cygnus) family walking, Lofoten, northern Norway, August.

Ismaele Tortella / Reindeer (Rangifer tarandus), Kvaloya island, Tromso, Norway, November.

Ismaele Tortella / Three Rock ptarmigan (Lagopus muta) feeding in winter plumage, city of Tromso in the background, northern Norway, March 2019.

Ismaele Tortella / Aerial tracking shot over Tromso in the winter, northern Norway, March 2019.