American Bison calves are commonly called “Red Dogs” because of their reddish color. They are everywhere at Yellowstone in the spring and early summer…not so much in early September…but this must have been a very late calf. These photos were taken well after sunset, as in the last light of day, using Sony’s Anti-motion Blur mode to make the most of the available light. We were stopped on our way back to Lamar Buffalo Ranch by the main herd of Bison crossing the road and I had lots of time to get a window down and photograph Bison in the pasture below the road as we waited. Sony RX10iv at 600 and 100mm equivalents. Anti-motion Blur mode. Processed in Polarr.