Sergey Gorshkov / Ruffs displaying and fighting (Philomachus pugnax) Agapa River, Taimyr Peninsula, Siberia, Russia

Sergey Gorshkov / Ruff displaying (Philomachus pugnax) Agapa River, Taimyr Peninsula, Siberia, Russia

Sergey Gorshkov / Willow grouse / ptarmigan (Lagopus lagopus) pair in flight, Agapa River, Taimyr Peninsula, Siberia, Russia

Valeriy Maleev / Arctic fox (Vulpes lagopus) walking through snowy landscape, Taymyr Peninsula, Siberia, Russia.

Valeriy Maleev / RF - Arctic fox (Vulpes lagopus), portrait, Taymyr Peninsula, Siberia, Russia. (This image may be licensed either as rights managed or royalty free.)

Valeriy Maleev / Arctic Fox (Vulpes lagopus) lying in snow, Taymyr Peninsula, Siberia, Russia.

Valeriy Maleev / Arctic fox (Vulpes lagopus) running across snow, Taymyr Peninsula, Siberia, Russia.

Valeriy Maleev / Arctic fox (Vulpes lagopus) running across snow, Taymyr Peninsula, Siberia, Russia.

Valeriy Maleev / Arctic fox (Vulpes lagopus) standing in snow, Taymyr Peninsula, Siberia, Russia.

Sergey Gorshkov / Willow grouse (Lagopus lagopus) flock in flight, Taymyr Peninsula, Siberia, Russia . March

Sergey Gorshkov / Willow ptarmigans (Lagopus lagopus) Taymyr Peninsula, Siberia, Russia . March

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) resting in snow, Taymyr Peninsula, Siberia, Russia. March

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) resting in snow, Taymyr Peninsula, Siberia, Russia. March

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) male in spring plumage, Taymyr Peninsula, Siberia, Russia. June

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) male in spring plumage, Taymyr Peninsula, Siberia, Russia. June

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) female in spring plumage, Taymyr Peninsula, Siberia, Russia. June

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) Taymyr Peninsula, Siberia, Russia. June

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) male in spring plumage, Taymyr Peninsula, Siberia, Russia. June

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) male in spring plumage, in snow, Taymyr Peninsula, Siberia, Russia. June

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) male in spring plumage, calling at sunrise, Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) male in spring plumage, in flight at sunset, Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) male in spring plumage, Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males in spring plumage Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males in spring plumage fighting Taymyr Peninsula, Siberia, Russia. Sequence 9 of 9. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males in spring plumage fighting Taymyr Peninsula, Siberia, Russia. Sequence 8 of 9. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males in spring plumage fighting Taymyr Peninsula, Siberia, Russia. Sequence 7 of 9. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males in spring plumage fighting Taymyr Peninsula, Siberia, Russia. Sequence 6 of 9. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males in spring plumage fighting Taymyr Peninsula, Siberia, Russia. Sequence 5 of 9. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males in spring plumage fighting Taymyr Peninsula, Siberia, Russia. Sequence 4 of 9. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males in spring plumage fighting Taymyr Peninsula, Siberia, Russia. Sequence 3 of 9. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males in spring plumage fighting Taymyr Peninsula, Siberia, Russia. Sequence 2 of 9. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) males fighting, with spring plumage, Taymyr Peninsula, Siberia, Russia. Sequence 1 of 9. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) two in flight, Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) flock, moulting into spring plumage, Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) flock, moulting into spring plumage, Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) flock, Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) flock in spring plumage in flight, Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Willow ptarmigan (Lagopus lagopus) flock in spring plumage, Taymyr Peninsula, Siberia, Russia. May

Sergey Gorshkov / Rock ptarmigan (Lagopus muta) flying and calling, Taymyr Peninsula, Siberia, Russia . March

Sergey Gorshkov / Rock ptarmigan (Lagopus muta) flying and calling, Taymyr Peninsula, Siberia, Russia . March

Sergey Gorshkov / Rock ptarmigan (Lagopus muta) male on snow drift, Taymyr Peninsula, Siberia, Russia . March

Sergey Gorshkov / Rock ptarmigan (Lagopus muta) male in snow, Taymyr Peninsula, Siberia, Russia . March

Sergey Gorshkov / Rock ptarmigan (Lagopus muta) male taking off from snow, Taymyr Peninsula, Siberia, Russia . March

Sergey Gorshkov / Rock ptarmigan (Accipiter gentilis) male and female in winter plumage, Taymyr Peninsula, Siberia, Russia . March

Sergey Gorshkov / Aerial view of partially frozen tundra, with meltwater pool, Taimyr Peninsula, Siberia, Russia, June 2010

Sergey Gorshkov / Aerial view of partially frozen tundra with ice river, Taimyr Peninsula, Siberia, Russia, June 2010

Sergey Gorshkov / Aerial view of partially frozen tundra with meltwater lake, Taimyr Peninsula, Siberia, Russia, June 2010

Sergey Gorshkov / Storm clouds above partially frozen tundra, Taimyr Peninsula, Siberia, Russia, June 2010