Bighorn sheep are common in Badlands National Park, but I don't see rams this big so frequently.
The key to capturing this image was observing that the ram was eating the yellow flowers. While eating, the ram's head was primarily down, not my favorite position. Positioning to capture the ram leaving one harvested patch on its way to another yielded a selection of head-up poses.
Getting the 600mm and f/4 combination down low on the flat grasslands creates a strongly blurred background.
Heatwave distortion was a problem during this capture, but shooting many images at a fast frame rate provided an adequate number of sharp results.
A larger version of this image is available here.