Daily Postcard: This long-tailed weasel spotted Wednesday perched between two rocks at Valles Caldera National Preserve is a tiny but scrappy mammal. This mighty mustelid primarily eats lizards, small birds and rodents, but occasionally it will prey on animals larger than itself, lending to its reputation as a ferocious hunter. The most common weasel sightings at Valles Caldera take place in the vicinity of the Entrance Station. One even weaseled its way inside the Entrance Station Tuesday at closing time, causing quite a stir. The long-tailed weasel is a master of adaptation. In the summer, its coat is medium brown to cream, blending in with soil, rocks, and plant life. In the winter, it turns white to blend in with the snow. In both phases, there is a black tip on the animal’s tail. Photo by Jake Frank/NPS