Pronghorn

This male is in full rut and was trying to manage a very large harem at Flaming Gorge earlier this week and he wasn't having an easy time of it. One of the females kept trying to escape and he would have to race after her, cut in front of her and herd her back to the harem. Here he is chasing her down at high speed at the top of a hill just as the sun was about to set, thus the very warm light. The female is just out of frame at bottom as he races to get ahead of her and cut her off.

7D, 1/1600, f/5.6, ISO 640, EV +0.67, 500 f/4, 1.4 tc, shot from pickup window on 9/21/11, minor highlight reduction in ACR, cropped to 60% of original image, selectively sharpened, no additional processing or adjustments

Larger version provided

Comments/critique appreciated