The weather on our last day in Yellowstone National Park was overcast, foggy, icy cold, windy as hell, and generally gloomy. The bright spot in our day was the last hour as we drove out of the park to find the band of Bighorn Sheep we’ve watched and photographed all week. I lost count of the number of rams we saw in what I call a scrum, as they all cluster together in a big group and agitate, butt the occasional head, and just be rams. I captured this image of three of the mature rams lined up looking somewhat regal. I call them The Invincible Trio because their haughty appearance seemed to meet the definition of invincible: unconquerable, undefeated, and unsubdued. With their heads held high, the inclement weather seemed not to deter them from their mission to mate with a ewe, although none of the ewes we saw wanted anything to do with any of the rams.