Hawk w/prey

My once a year foray into the avian gallery. My wife was walking in the park near home late yesterday afternoon when this hawk swooped down on a squirrel right in front of her. She called me, so I grabbed my camera and headed over, hoping it would still be there. It was, and I was able to get some shots. You can see the squirrel's tail and blood on the hawk. I have a couple questions. Is that fact that the hawk is on the ground detract from the quality of the shot? Also, is this a red tail hawk? Is the crop ok or would you recommend a different crop? (It is cropped about 50% as shown). Thanks for looking/commenting. D600, 80-400 @ 400 and 5.6, 1/250, iso 800, hh.