National Geographic : 1953 May
© National Geographic Society 598 One Ptarmigan in the Net Is Worth Ten in the Willow Bush Two kinds of ptarmigan-rock and willow-are found in the northern wilderness. "Rockers" live on glaciers and above timber line and usually feed in small groups. Willow ptarmigan in fall and winter sometimes congregate in coveys of a thousand or more along sand bars. They can be snared with loops of fine wire or thread strung along bird trails. Here an "injured" pilot (above) weaves a net of nylon thread obtained from parachute shroud lines. Other airmen (below) trap a ptarmigan with a gill net staked across a run.