Roy Mangersnes / Svalbard ptarmigan (Lagopus muta hyperborea) part way through moulting from summer to winter plumage,near Longyearbyen, Spitsbergen, Svalbard, Norway, September.
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Roy Mangersnes / Svalbard ptarmigan (Lagopus muta hyperborea) resting, Spitsbergen, Svalbard, Norway, August
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Roland Seitre / Rock ptarmigan (Lagopus muta hyperborea) female in winter plumage standing on snow in late afternoon light, Spitsbergen, Svalbard, Norway. April.
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Roland Seitre / Rock ptarmigan (Lagopus muta hyperborea) male in winter plumage standing on hillside, Spitsbergen, Svalbard, Norway. April.
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Roland Seitre / Rock ptarmigan (Lagopus muta hyperborea) female in winter plumage standing on snow in late afternoon light, Spitsbergen, Svalbard, Norway. April.
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Roland Seitre / Rock ptarmigan (Lagopus muta hyperborea) male in winter plumage standing on snow calling, Spitsbergen, Svalbard, Norway. April.
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Roland Seitre / Rock ptarmigan (Lagopus muta hyperborea) female in winter plumage standing on snow calling, Spitsbergen, Svalbard, Norway. April.
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Roland Seitre / Rock ptarmigan (Lagopus muta hyperborea) portrait, Spitsbergen, Svalbard, Norway. May.
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Roland Seitre / Rock ptarmigan (Lagopus muta hyperborea) winter plumage, portrait, Svalbard, Norway.
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Pal Hermansen / Svalbard rock ptarmigan (Lagopus muta hyperboreus) Adventdalen valley, Svalbard archipelago. June
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Roland Seitre / Rock Ptarmigan (Lagopus muta hyperborea) camouflaged in snow, Longyearbyen, Spitsbergen, Svalbard, Norway
