Willow ptarmigan seeds and berries during the summer and largely subsisting on the buds and twigs of willow and other dwarf shrubs and trees during the winter. The willow ptarmigan is a medium to large ground-dwelling bird and is the most numerous of the three species of ptarmigan. Males and females are about the same size, the adult length varying between with a wingspan ranging from . The weight is . It is deep-chested and has a fairly long neck, a broad bill, short feathered legs and a moderately short rounded tail. In the summer, the male's plumage is marbled brown, with
Ptarmigan (sternwheeler) surface). Captain Armstrong was able to raise "Ptarmigan" and return her to service. However "Ptarmigan" caught fire later in 1907, and her upper works were destroyed. Again, "Ptarmigan" was salvaged, her upper works were rebuilt and she was returned to service. The gasoline engine was a new development in the early 1900s. Captain Northcote Cantlie, who has gone down in history as "an eccentric Scot" purchased a gasoline-engined launch, "Gian", and placed her on the upper Columbia. Unlike Armstrong, Cantlie came from a wealthy background, drank champagne for breakfast, and kept a bagpiper as his personal attendant. Cantlie, knowing that