Lynn M Stone / Bighorn sheep {Ovis canadensis} Female seeking refuge from male Jasper NP Alberta Canada

Carol Walker / RF - Percheron horse trotting through snow. Alberta, Canada. Febraury. (This image may be licensed either as rights managed or royalty free.)

Ashley Cooper / Boreal forest trees clear felled to make way for a new tar sands mine north of Fort McMurray, Alberta, Canada. August 2012

Eric Baccega / Spirit Island, Maligne Lake, Jasper National Park, Rocky Mountains, Alberta, Canada, September 2009

Gavin Hellier / Wenkchemna Peaks or Ten Peaks rising over Moraine lake in the snow, near Lake Louise, Banff National Park, Alberta, Canada, 2007

Gavin Hellier / Wenkchemna Peaks or Ten Peaks rising over Moraine lake in the snow, near Lake Louise, Banff National Park, Alberta, Canada, 2007

Gavin Hellier / Peyto Lake, coloured by glacial silt, Banff-Jasper National Parks, Alberta, Canada, 2007

Oriol Alamany / Angel Glacier with morraine, Jasper National Park, Rocky Mountains, Alberta, Canada

Oriol Alamany / Nigel Creek with conifer forest at dusk, Banff National Park, Rocky Mountains, Alberta, Canada

Gerrit Vyn / Yellow-headed Blackbird (Xanthocephalus xanthocephalus) male in breeding plumage, perched on cattails in wetlands, Alberta, Canada. June.

Gerrit Vyn / Tennessee Warbler (Vermivora peregrina) male perched in a pine tree branch, singing in spring, Cold Lake, Edmonton, Alberta, Canada. May.

Gerrit Vyn / Ruddy Duck (Oxyura jamaicensis) male in breeding plumage performing a "bubbling display"which is used in both courtship and aggressive territorial encounters. The male holds its head and tail and 2 ro...

Gerrit Vyn / Two Northern Saw-whet Owls (Aegolius acadicus) fledgling chicks, that have recently left the safety of their nest cavity. Alberta, Canada. June.

David Noton / Pine trees by the Athabasca River near Jasper, Jasper National Park, Alberta, Canada. September 2009

David Noton / Athabasca River near Jasper, Jasper National Park, Alberta, Canada. September 2009

David Noton / Athabasca River with Dragon Peak and the Winston Churchill Range at dawn, Jasper National Park, Alberta, Canada. September 2009

David Noton / Athabasca River with Dragon Peak and the Winston Churchill Range at dawn, Jasper National Park, Alberta, Canada. September 2009

David Noton / The Athabasca River with Mt Fryatt and Brussels Peak at dawn, Jasper National Park, Alberta, Canada. September 2009

David Noton / Morraine Lake, in the Valley of the Ten Peaks, after recent snowfall, Banff National Park, Alberta, Canada. October 2009

David Noton / Morraine Lake, in the Valley of the Ten Peaks, after recent snowfall, Banff National Park, Alberta, Canada. October 2009

David Noton / The Valley of the Ten Peaks, after recent snowfall, Banff National Park, Alberta, Canada. October 2009

David Noton / The Valley of the Ten Peaks, after recent snowfall, Banff National Park, Alberta, Canada. October 2009

David Noton / Autumn colours of the Aspen trees (Populus tremula) in the snow, near Muleshoe, Bow Valley Parkway, Banff National Park, Alberta, Canada. October 2009

David Noton / Autumn colours of the Aspen trees (Populus tremula) in the snow, near Muleshoe, Bow Valley Parkway, Banff National Park, Alberta, Canada. October 2009

David Noton / Autumn colours of the Aspen trees (Populus tremula) in the snow, near Muleshoe, Bow Valley Parkway, Banff National Park, Alberta, Canada. October 2009

Eric Baccega / Two Elk (Cervus canadensis) bulls at sunset, Jasper National Park, Rocky Mountains, Alberta, Canada, September

Eric Baccega / Hoary marmot (Marmotta caligata) carrying grass to build nest, Banff National Park, Rocky Mountains, Alberta, Canada

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

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

David Noton / Mount Rundle and the Bow Valley, Banff National Park, Alberta Canada

David Noton / Looking over Morraine Lake to the Rockies, Banff National Park, Alberta, Canada, North America

David Noton / View over Patricia Lake, Jasper National Park, Alberta, Canada, North America

David Noton / Patricia Lake, Jasper National Park, Alberta, Canada, North America

David Noton / Morraine Lake, Banff National Park, Alberta, Canada, North America

David Noton / Reflections of the Rocky Mountains in Morraine Lake, Banff NP Alberta Canada, North America

David Noton / Morraine Lake with mountains all around, Banff National Park, Alberta Canada, North America

David Noton / View over Vermillion Lake towards Mount Rundle, Banff NP, Alberta, Canada, North America

David Noton / Panoramic dawn reflections of Mt Rundle at Vermillion Lake Banff NP Alberta Canada, North America

David Noton / Morraine Lake, Banff NP, Alberta, Canada.

David Noton / Lake Louise, Banff NP, Alberta, Canada

David Noton / Patricia Lake, Jasper NP, Alberta, Canada. Mountains reflected in a lake.

David Noton / Consolation Lake at Banff NP, Alberta, Canada.

Tim Edwards / Banff NP, Banff National Lake. Canada. Montains reflections. Mountains and lake scene.

Jim Brandenburg / Alluvial fan at mouth of glacial stream, Canadian Rocky Mountains, Alberta, Canada

Jeff Foott / Mount Chephren, Banff National Park, Alberta, Canada

Jeff Foott / Mountains and river after autumn snowfall, Sunwapta River, Jasper National Park, Alberta, Canada

Jeff Foott / Sunwapta Falls, Sunwapta River, Jasper National Park, Alberta, Canada

Jeff Foott / Sunwapta Falls, Sunwapta River, Jasper National Park, Alberta, Canada