Last weekend I climbed Treasury Mountain, a massif of marine shales rising more than thirteen thousand feet above sea level. The endless slopes of loose scree are nearly bare – but not completely. Can you find the white-tailed ptarmigan (Lagopus leucura) in this photograph? The species lives on alpine tundra throughout the year, and is nearly invisible in its summer plumage.

I have heard they are very tasty, but have never had the heart to find out.