Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, standing on hind legs, Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, standing on two feet. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, standing on two feet. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, looking from behind a birch tree and licking its nose, Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Mountain hare (Lepus timidus) feeding on mountain birch. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Mountain hare (Lepus timidus) portrait. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Whooper swan (Cygnus cygnus) calling, Nidelve River. Klaebu, Sor-Trondelag, Norway, December.

Erlend Haarberg / Hoarfrost covering the landscape on a cold winter day. Klaebu, Sor-Trondelag, Norway, January.

Erlend Haarberg / Hoarfrost covering the landscape on a cold winter day. Klaebu, Sor-Trondelag, Norway, January.

Erlend Haarberg / Hoarfrost covering the landscape on a cold winter day. Klaebu, Sor-Trondelag, Norway, January.

Loic Poidevin / Drivstua train station, Dovrefjell, Sor-Trondelag, Norway, June.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, running. Vauldalen, Sor-Trondelag, Norway, May.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, running. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, trying to steal fish (trout) hanging on transparent fishing line. Vauldalen, Sor-Trondelag, Norway, April

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, trying to steal fish (trout) hanging on transparent fishing line. Vauldalen, Sor-Trondelag, Norway, April

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, trying to steal fish (trout) hanging on transparent fishing line. Vauldalen, Sor-Trondelag, Norway, April

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, trying to steal fish (trout) hanging on transparent fishing line. Vauldalen, Sor-Trondelag, Norway, April

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, trying to get at some fish (trout) hanging on transparent fishing line. Vauldalen, Sor-Trondelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat. Vauldalen, Sr-Trndelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat. Vauldalen, Sr-Trndelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat with fish. Vauldalen, Sr-Trndelag, Norway, April.

Erlend Haarberg / Stoat (Mustela erminea) in white winter coat, standing on two feet. Vauldalen, Sor-Trondelag, Norway, April.

Orsolya Haarberg / Mountain hare approaching another (Lepus timidus). Vauldalen, Sor-Trondelag, Norway. April

Orsolya Haarberg / Mountain hare approaching another (Lepus timidus)Vauldalen, Sor-Trondelag, Norway. April

Orsolya Haarberg / Stoat (Mustela erminea) leaping through snow in white winter coat. Vauldalen, Sor-Trondelag, Norway. April

Orsolya Haarberg / Stoat (Mustela erminea) in white winter coat climbing tree to get at birds nest. Vauldalen, Sor-Trondelag, Norway. April 2012

Orsolya Haarberg / Stoat (Mustela erminea) in white winter coat in snow, Vauldalen, Sor-Trondelag, Norway. April

Erlend Haarberg / Red squirrel (Sciurus vulgaris) on Scots pine, Klaebu, Sor-Trondelag, Norway, November

Erlend Haarberg / Male Common bullfinch (Pyrrhula pyrrhula) perched, Vauldalen, Sor-Trondelag Norway, May

Erlend Haarberg / Canada goose (Branta canadensis) head portrait, Buvika, Sor-Trondelag, Norway, March

Erlend Haarberg / Brambling (Fringilla montifringilla) female in snow, Vauldalen, Sor-Trondelag, Norway, May

Orsolya Haarberg / Mountain birch (Betula pubescens) trees canopy covered in snow, Vauldalen, Sor-Trondelag, Norway, December 2004

Orsolya Haarberg / Birch branches covered in ice near a waterfall, Klaebu, Sor-Trondelag, Norway, November 2009

Orsolya Haarberg / Ice-covered birch twig, Klaebu, Sor-Trondelag, Norway, November 2009

Orsolya Haarberg / Two Muskoxen (Ovibus moschatus) lying covered in snow, Dovrefjell-Sunndalsfjella National Park, Sor-Trondelag, Norway, March

Orsolya Haarberg / Two Muskoxen (Ovibus moschatus) lying covered in snow, Dovrefjell-Sunndalsfjella National Park, Sor-Trondelag, Norway, March

Orsolya Haarberg / Muskox (Ovibus moschatus) herd covered in snow, Dovrefjell-Sunndalsfjella National Park, Sor-Trondelag, Norway, March

Orsolya Haarberg / Muskox (Ovibus moschatus) walking with snow on its back, Dovrefjell-Sunndalsfjella National Park, Sor-Trondelag, Norway, March

Orsolya Haarberg / Male Bluethroat (Luscinia svecica) perched on branch, Vauldalen, Sor-Trondelag, Norway, May

Orsolya Haarberg / Trees with berries in snow covered forest, Klaebu, Sor-Trondelag, Norway, November

Erlend Haarberg / Red fox (Vulpes vulpes) looking up tree, Sor-Trondelag, Norway, June

Erlend Haarberg / Wild Reindeer (Rangifer tarandus) herd in snow, Forollhogna National Park, Sor-Trondelag, Norway, January

Erlend Haarberg / Wild Reindeer (Rangifer tarandus) herd in snow, Forollhogna National Park, Sor-Trondelag, Norway, January

Erlend Haarberg / Wild Reindeer (Rangifer tarandus) herd in snow, Forollhogna National Park, Sor-Trondelag, Norway, January

Erlend Haarberg / Female Roe deer (Capreolus capreolus) in vegetation, Storfosna, Sor-Trondelag, Norway, June

Erlend Haarberg / Female Roe deer (Capreolus capreolus) at sunset, Storfosna, Sor-Trondelag, Norway, June

Erlend Haarberg / Two Mountain hares (Lepus timidus) fighting, Sor-Trondelag, Norway, April

Erlend Haarberg / Mountain hare (Lepus timidus) running on snow, Sor-Trondelag, Norway, April

Erlend Haarberg / Muskox (Ovibos moschatus) herd, Dovrefjell-Sunndalsfjella National Park, Sor-Trondelag, Norway, January

Erlend Haarberg / Muskoxen (Ovibos moschatus) walking with snow stuck to fur, Dovrefjell-Sunndalsfjella National Park, Sor-Trondelag, Norway, January

Erlend Haarberg / Muskox (Ovibos moschatus) lying down rear view, Dovrefjell-Sunndalsfjella National Park, Sor-Trondelag, Norway, January

Erlend Haarberg / Two Muskoxen (Ovibos moschatus) others grazing in background, Dovrefjell-Sunndalsfjella National Park, Sor-Trondelag, Norway, January

Erlend Haarberg / Muskoxen (Ovibos moschatus) grazing in snow, Dovrefjell-Sunndalsfjella National Park, Sor-Trondelag, Norway, December

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,.

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,

Orsolya Haarberg / Musk ox (Ovibos moschatus) in snow storm, resting, covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March,

Orsolya Haarberg / Musk ox (Ovibus moschatus) in snow storm covered in snow, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March

Orsolya Haarberg / Musk ox (Ovibus moschatus) in snow storm facing the wind, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March

Orsolya Haarberg / Musk ox (Ovibus moschatus) group in snow storm standing with backs to the wind, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway, March

Orsolya Haarberg / two Musk ox (Ovibus moschatus) on snow in winter, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway. January

Orsolya Haarberg / Musk ox (Ovibus moschatus) in snow storm, standing with rear to the wind, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway. December.

Orsolya Haarberg / Musk ox (Ovibus moschatus) with snow on face, Dovre-Sunndalsfjella National Park, Sor-Trondelag, Norway. December

Orsolya Haarberg / Red squirrel (Sciurus vulgaris) jumping through snow with nut in its mouth, Sor-Trondelag, Norway

Orsolya Haarberg / Surface sea ice, undulations caused by the ebb-and-flow of the Trondheimsfjord on a cold winter day, Trondheim, Sor-Trondelag, Norway, January 2006

Orsolya Haarberg / Lade church and churchyard, Trondheim, Sor-Trondelag, Norway, January 2006

Orsolya Haarberg / Winter landscape, the Nidelva River with the Kristiansen fortress in the background, Trondheim, Sor-Trondelag, Norway, January 2006

Orsolya Haarberg / Winter landscape, the Nidelva River with the Kristiansen fortress in the background, Trondheim, Sor-Trondelag, Norway, January 2006

Orsolya Haarberg / Autumn-coloured trees with berries in snow-covered forest, Sor-Trondelag, Norway.

Orsolya Haarberg / Red fox (Vulpes vulpes) peering from behind tree trunk, Sor-Trondelag, Norway

Orsolya Haarberg / Frost-covered pine trees at the Trosovika camping site in Orkanger, Orkdalen, Sor-Trondelag, Norway, January 2010

Orsolya Haarberg / Canada goose (Branta canadensis) portrait, Skaun, Sor-Trondelag, Norway

Pete Cairns / Series of waterfalls running through ancient boreal forest in Atndalen, Stor-elvdal, Sor-Trondelag, Norway

Pete Cairns / Series of waterfalls running through ancient boreal forest in Atndalen, Stor-elvdal, Sor-Trondelag, Norway

Pete Cairns / Mountain stream running through autumnal woodland, Orkdalen, Kvikne, Sor-Trondelag, Norway.

Pete Cairns / Mountain stream running through autumnal woodland, Orkdalen, Kvikne, Sor-Trondelag, Norway.

Niall Benvie / Eurasion beaver lodge {Castor fiber} Sor Trondelag, Songli, Norway.

Niall Benvie / Foot of Red deer {Cervus elaphus} victim of cold winter, Sor Trondelag, Norway.

Niall Benvie / Man gathering wild berries in pine forest, Songli, Sor Trondelag, Norway

Niall Benvie / Wild berries - Cloudberry, Blaeberry and Raspberry. Songli, Sor Trondelag, Norway, Scandinavia, Europe

Niall Benvie / White tailed sea eagle immature bird. Sor Trondelag, Norway, Scandinavia, Europe

Niall Benvie / Golden eagle immature mantling prey. Sor Trondelag, Norway, Scandinavia, Europe

Niall Benvie / Mountain landscape, in willow zone. Sylen, Sor Trondelag, Norway, Scandinavia, Europe

Niall Benvie / Wild berries - cloudberry, blaeberry and raspberry - gathered from forest. Sor Trondelag, Norway, Scandinavia, Europe

Bengt Lundberg / Arctic fox cub in summer {Vulpes lagopus} Kolifjall, Sor Trondelag, Norway 2002

Bengt Lundberg / Arctic fox cub in summer {Vulpes lagopus} Kolifjall, Sor Trondelag, Norway 2002

Bengt Lundberg / Arctic fox cub in winter coat {Vulpes lagopus} Kolifjall, Sor Trondelag, Norway