And, not just one, but 21 of them! Ah yes, those white butts are quite familiar to anyone that has tried to capture pictures of these speed demons of the Great Plains.
They are notoriously shy and being the second-fastest land animal in the world (second to the cheetah), they have the ability to remove themselves from picture opportunities quite quickly. This past weekend I came across a sizeable herd of them and me simply stopping my truck was all it took to get them off and running.
In this image I counted 21 pronghorns although a couple of their white butts are blocked by others. I certainly have gotten far closer and better pictures of these guys but this was kind of a fun capture.