found in tall grass near pond, very common, adult, very fast and hard to catch
I watched this ermine catch 5 pika on trips up and down the slopes of Cracked Crag. Chipmunk-sized with a short tail (there are no perspective tricks going on in this picture, but if needed, I can upload others with a more side-on perspective. Pika observation recorded separately here: https://www.inaturalist.org/observations/14002186