We discovered this large group of 18 pronghorn in Lamar Valley. Initially they were somewhat skittish, but I was able to get them to accept me after a visible stalk of almost a half mile to get within 500mm portrait range. Here are three images from that stalk. - {} - {} - {}
I was in Yellowstone NP a little over a month ago and got some of my first Pronghorn shots, too. I've posted a couple of the web versions of mine, to add to the thread: {} {}