Bighorn Mother and Lamb, Yellowstone National Park, WyomingThis one goes back a few years when I visited Yellowstone at the beginning of the fall season. The bachelor herds were still high in the alpine tundra while the ewes and their lambs were at lower elevations. These two posed for a few nice portraits before getting back to grazing. Nikon D810 with Nikkor 200-400mm lens (at 380mm) ISO 2000, f/4 at 1/400th of a second.