Attu and Its Island-hopping Rock Ptarmigan

Attu, at the western end of Alaska’s Aleutian chain, is home to the Rock Ptarmigan. Although grouse are not long-distance fliers, Rock Ptarmigans can cross open water, so they occur from one end of the Aleutians to the other. They are supremely adapted for high latitudes, with thick feathers, each with two shafts. During winter, even their toes become feathered. They ride out blizzards by burrowing deeply into fresh powder snow and roosting there. When spring finally arrives, the snow-white male will flutter into the air, then glide to earth while calling loudly. He fans his black tail in spectacular display before the female. And a new year begins!

More info and transcript at BirdNote.org. 

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