Snow camouflage Snow camouflage Snow camouflage is the use of a coloration or pattern for effective camouflage in winter, often combined with a different summer camouflage. Summer patterns are typically disruptively patterned combinations of shades of browns and greys, up to black, while winter patterns are dominated by white to match snowy landscapes. Among animals, variable snow camouflage is a type of seasonal polyphenism with a distinct winter plumage or pelage. It is found in birds such as the rock ptarmigan, lagomorphs such as the Arctic hare, mustelids such as the stoat, and one canid, the Arctic fox. Since these have evolved
Ptarmigan (sternwheeler) Ptarmigan (sternwheeler) Ptarmigan was a sternwheel steamboat that operated in British Columbia on the Columbia River from 1903 to 1909. "Ptarmigan" was built at Golden, BC and was the last vessel built for the Upper Columbia Navig. & Tramway Co., of which Capt. Frank P. Armstrong was the principal owner and manager. "Ptarmigan"'s engines were over 60 years old, and had been originally built for a ferry crossing the St. Lawrence River. The engines had been previously installed in two other sternwheelers on the upper Columbia River, specifically the first "Duchess", and the second "Duchess". The blunt-ended bow of "Ptarmigan"