In the next photo you can see the tail more, but it looks like a red-tail hawk. This is the guy who was down in the grass that the white-tailed kite was attacking. It looks like he got a rock pigeon, but I'm not positive on who the unlucky fellow is.
Nikon d5, 500/5.6e shot at 1/2000, f/5.6, ISO 500 cropped to 6.7 MP (1.8x, 900mm equivalent). This was on full manual settings -- I had set the ISO to not blow out the high-lights. The shadows are boosted probably +2 EV or more in Photoshop. I was on the wrong side, so the birds are backlit. The blue tint on the pigeon and hawk wings is because it was deep shadow.