That can be so sad to see even as we/ I can be glad to have a local ecosystem that's healthy enough to support all levels of the food chain. Somewhere I have pics that I wouldn't post of a hawk sitting on a struggling dove and ripping the meat from its still living breast. Once I saw it I knew that the dove would not survive if I decided to play God and intervene. Doves seem a favorite hawk food, slower and dumber nice size meals are a treat those smaller raptors cannot resist. I've also chased a hawk off a captured mallard with her drake standing by helplessly watching. She was hurt but OK and they came to like our backyard as a seeming safe haven. The ducks weigh a good deal more than the hawk. Many times our dove flock has been thinned by at least two varieties of back yard hawk. I've also seen a Golden Eagle fly low over the roof of my garage, and gauging by the eagle wingspan being easily 1/3 the 24' roof width, this was a huuuuge raptor with close to an eight foot wingspan. These massive birds don't land in the yard, that would be pretty awesome to see, a giant eagle face to face.