Silhouette of Rock ptarmigan (Lagopus mutus) perched on rock against winter sun, Cairngorms NP, Highlands, Scotland, UK, February. Photographer quote: 'At -20c and with fog rolling across the mountains, I was willing this perched ptarmigan to get up and stretch against a partly obscured sun. He never did but the image worked out well nevertheless.' Did you know? Ptarmigan live on the top of Scotlandís mountains often withstanding wind speeds of up to 150mph.