Maybe it’s a juvenile redtail. Come to think of it, there is a hawk with a biggish head that people mistake for owls. Of course I can’t think of the name.
I saw one similar in my yard a few years ago. He got him a bird and flew away with feathers flying all over the place. I was upset and my husband explained it all to me....I still was upset! He was too, a little, if you know what I mean?