Michael Quinton / Dall's Sheep (Ovis dalli) ram, lamb, and ewe, Yukon Territory, Canada

Matthias Breiter / Aurora borealis above taiga, Whitehorse, Yukon Territory, Canada

Matthias Breiter / Aurora borealis above taiga, Whitehorse, Yukon Territory, Canada

Gerrit Vyn / Pacific golden-plover (Pluvialis fulva) male performing distraction display pretending to have broken wing, Yukon Delta National Wildlife Refuge, Alaska, USA. June.

David Noton / Autumnal foliage of Fireweed (Epilobium angustifolium) Kluane National Park, Yukon Territories, Canada, September.

David Noton / Aurora Borealis (Northern Lights) over the Klondike River, Yukon Territories, Canada, September 2013.

David Noton / Green waters of Emerald Lake, near Carcross, Yukon Territories, Canada, September 2013.

Theo Allofs / Autumn in the Ogilvie Mountains and boreal forest near the Dempster Highway, Yukon, Canada

Staffan Widstrand / White water river rafting, Yukon, Canada.

Patricio Robles Gil / St. Elias Mountains, Kluane National Park, Canada

Patricio Robles Gil / Glacier, St. Elias Mountain, Kluane National Park, Canada

Tim Fitzharris / Pond reflecting Nisling Range, Yukon Territory, Canada