Friend Dawn Villaescusa had been watching the Cooper's in front of our barn before I joined her. She got some awesome photos of the hawk from the back before he turned around. I stole one of them. Thanks, Dawn!
The next morning this was the scene that greeted me when I tossed grain out for the birds again.
In spite of the apparent bluish cast to the feather below (an artifact of lighting, I guess), it was actually gray, black and white. This Fish & Wildlife Service web site identified it as a Mourning Dove feather. http://www.fws.gov/lab/featheratlas/feather.php?Bird=MODO_tail_imm
We now have one fewer Mourning Doves in the neighborhood. And a juvenile Cooper's Hawk with a full belly, at least on that day.