I like the saturation just fine. Great environmental with the light to dark sun/shade on the grasses and the bison placement all combining to make for a great looking image.
Steve,
I like the interplay of light and shade and the bg though looks desaturated, it works. The depth of field is adequate with plenty of details. I like the eye contact. The pano crop works. Overall, I like the image.
Great picture. I like the colors and composition. If you remove about half of the grey strip at the bottom of the image, the bull stands out even more.