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…

This summer I’ve been living in the Rogers Boggs cabin at the Rocky Mountain Biological Laboratory. There are four bedrooms, but I haven’t had any cabinmates for the past few days. That doesn’t mean the place is empty. I’ve been sharing it with a few wild visitors. A family of mule deer (Odocoileus hemionus) has…