Jasper Doest / Isdammen Lake, Adventdalen, Svalbard, Norway

Jasper Doest / Western Roe Deer (Capreolus capreolus) male standing on farmland, Poland

Jasper Doest / House Mouse (Mus musculus) in brick wall, Zuid-Holland, Netherlands

Jasper Doest / House Mouse (Mus musculus) in brick wall, Zuid-Holland, Netherlands

Jasper Doest / Ring-tailed Lemur (Lemur catta) looking at camera, Netherlands

Jasper Doest / Eurasian Oystercatcher (Haematopus ostralegus) calling on the beach, Netherlands

Jasper Doest / Greater Scaup (Aythya marila) female, Friesland, Netherlands

Jasper Doest / Smew (Mergellus albellus) drake on the water, Friesland, Netherlands

Jasper Doest / Smew (Mergellus albellus) drake on the water, Friesland, Netherlands

Jasper Doest / Greater Scaup (Aythya marila) female, Friesland, Netherlands

Jasper Doest / Smew (Mergellus albellus) drake on the water, Friesland, Netherlands

Jasper Doest / Common Goldeneye (Bucephala clangula) drake bathing, Friesland, Netherlands

Jasper Doest / Ruddy Duck (Oxyura jamaicensis) drake preening, Friesland, Netherlands

Jasper Doest / Ruddy Duck (Oxyura jamaicensis) female on the water, Friesland, Netherlands

Jasper Doest / Common Pochard (Aythya ferina) drake preening, Friesland, Netherlands

Jasper Doest / Eurasian Spoonbill (Platalea leucorodia) wading through the water, Texel, Netherlands

Jasper Doest / Greater Scaup (Aythya marila) female, Friesland, Netherlands

Jasper Doest / Common Moorhen (Gallinula chloropus) walking over ice, Friesland, Netherlands

Jasper Doest / Common Shelduck (Tadorna tadorna) pair standing on the ice and drinking, Friesland, Netherlands

Jasper Doest / Pied Avocet (Recurvirostra avosetta) pair mating, Texel, Netherlands

Jasper Doest / Sanderling (Calidris alba) scavenging on dead fish, Lincolnshire, United Kingdom

Jasper Doest / Long-tailed Duck (Clangula hyemalis) male on the ice, Svalbard, Norway

Jasper Doest / Long-tailed Duck (Clangula hyemalis) male on the ice, Svalbard, Norway

Jasper Doest / Long-tailed Duck (Clangula hyemalis) female on the ice, Svalbard, Norway

Jasper Doest / Long-tailed Duck (Clangula hyemalis) male on the ice, Svalbard, Norway

Jasper Doest / Svalbard Reindeer (Rangifer tarandus platyrhynchus) laying on the tundra in snowfall, Svalbard, Norway

Jasper Doest / Black-headed Gull (Chroicocephalus ridibundus) standing in shallow water, Texel, Netherlands

Jasper Doest / Svalbard Reindeer (Rangifer tarandus platyrhynchus) laying on the tundra, Svalbard, Norway

Jasper Doest / Pied Avocet (Recurvirostra avosetta) wading through shallow water, Texel, Netherlands

Jasper Doest / Pied Avocet (Recurvirostra avosetta) wading in shallow water, Texel, Netherlands

Jasper Doest / Northern Gannet (Sula bassana) flying, Helgoland, Germany

Jasper Doest / Arctic Fox (Alopex lagopus) cub on tundra, Svalbard, Norway

Jim Brandenburg / Double rainbow over Sunwapta Falls near Jasper National Park, Alberta, Canada

Donald M. Jones / American Marten (Martes americana) sitting in snow, Jasper National Park, Alberta, Canada

Donald M. Jones / American Elk (Cervus elaphus nelsoni) bull in winter habitat, Jasper National Park, Alberta, Canada

Donald M. Jones / American Elk (Cervus elaphus nelsoni) bull attempting to cross the Trans-Canadian Highway, Jasper National Park, Alberta, Canada

Donald M. Jones / American Elk (Cervus elaphus nelsoni) bulls feeding in snow covered valley, Jasper National Park, Alberta, Canada

Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, Jasper National Park, Canada

Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, Jasper National Park, Canada

Donald M. Jones / Bighorn Sheep (Ovis canadensis) month old lamb, Jasper National Park, Canada

Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams feeding during winter in Jasper National Park, Canada

Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram in winter, Jasper National Park, Canada

George Sanker / Close-up of Bighorn sheep (Ovis canadensis) ram grazing, Jasper National Park, Rocky Mountains, Alberta, Canada, Autumn

George Sanker / Bighorn sheep (Ovis canadensis) rams sparring, Jasper National Park, Rocky Mountains, Alberta, Canada, October 2005

George Sanker / Bighorn sheep (Ovis canadensis) rams sparring, Jasper National Park, Rocky Mountains, Alberta, Canada, October

George Sanker / Bighorn sheep (Ovis canadensis) rams in an alpine meadow just before the rutting season, Jasper National Park, Rocky Mountains, Alberta, Canada, October

George Sanker / Five Bighorn sheep (Ovis canadensis) rams, Jasper National Park, Rocky Mountains, Alberta, Canada, Autumn 2005

George Sanker / Bighorn sheep (Ovis canadensis) ram resting, Jasper National Park, Rocky Mountains, Alberta, Canada, October

George Sanker / Bighorn sheep (Ovis canadensis) mature rams gathering in a wintry alpine meadow just before the rut, Jasper National Park, Rocky Mountains, Alberta, Canada, October

Chien Lee / Jasper Falls, Canaima National Park, Venezuela

Chien Lee / Jasper Falls, Canaima National Park, Venezuela

Eric Baccega / Mountain goat (Oreamnos americanus) mother and kid resting, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Mount Pyramid with reflection in Pyramid Lake, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Bighorn sheep (Ovis canadensis) ewe, portrait, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Bull Elk (Cervus canadensis) Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Least chipmunk (Tamias minimus) feeding on grass, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Bighorn sheep (Ovis canadensis) ewe and lamb, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Two bull Elk (Cervus canadensis) sparing in the mating season, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Mountain goat (Oreamnos americanus) mother and kid resting under tree, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Coyote (Canis latrans) stalking prey in high grass, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / View from Spirit Island of Maligne Lake and mountains, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Coyote (Canis latrans) Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Least chipmunk feeding (Tamias minimus) on orthopteran prey, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Two bull Elk (Cervus canadensis) sparing in the mating season, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / View from Spirit Island of Maligne Lake and surrounding mountains, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Mountain goat (Oreamnos americanus) mother and kid grazing, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Mountain goat (Oreamnos americanus) mother and kid drinking from pool of water by river, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Male Elk (Cervus canadensis) in rut season, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Clouds over Talbot Lake, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Mountain goat (Oreamnos americanus) mother and kid grazing, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Young Bighorn sheep (Ovis canadensis) play fighting, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Mountain goat (Oreamnos americanus) with two kids licking salt, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Marker showing the recession of the Athabasca Glacier from 1992 to 2009, with two people walking along path, Columbia Icefield, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Mountain goat (Oreamnos americanus) mother and kid licking salt, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Bighorn sheep (Ovis canadensis) ewes on rock face, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Moutain goat (Oreamnos americanus) portrait, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Sunwapta river falls with a small tree covered island in the river, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Three Bighorn sheep (Ovis canadensis) ewes, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Mountain goat (Oreamnos americanus) Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Saskatchewan Glacier, Columbia Icefield, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Athabasca falls, Jasper National Park, Rocky mountains, Alberta, Canada, September 2009

Eric Baccega / Bighorn sheep (Ovis canadensis) ewe, portrait, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Mountain goat (Oreamnos americanus) Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Mount Athabasca and the Athabasca Glacier in the Columbia Icefield, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Bighorn sheep (Ovis canadensis) ewe on rock face, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Bull elk (Cervus Canadensis) crossing highway, with two people taking photographs out of parked car, Jasper National Park, Rocky mountains, Alberta, Canada, September 2009

Eric Baccega / Mount Athabasca and the Athabasca Glacier, Columbia Icefield, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Mountain goat (Oreamnos americanus) mother walking with kid following, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / View in to Maligne canyon from the top, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Pyramid Mountain towering above Pyramid Lake with low clouds over forest, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Bighorn sheep (Ovis canadensis) lamb walking behind mother, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Least chipmunk (Tamias minimus) feeding on berry, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Bull Elk (Cervus canadensis) walking near river, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / Mountain goat (Oreamnos americanus) mother with kid, Jasper National Park, Rocky Mountains, Alberta, Canada

Eric Baccega / River flowing from the Athabasca Glacier with Mount Athabasca, Columbia Icefield, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Eric Baccega / Maligne canyon, with waterfall, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009