Cooper's Hawks hunt small birds. Voila. Mystery solved.
I stopped by Breckinridge Park to walk a bit after work. A cold front was coming in as I got out of my car, and I felt the sharp temperature drop immediately and progressively.
I forgot to bring my cell phone to work today. I felt a little bare. I recall in the early, pre--smart days of cell phones, when leaving one at home was a delightful way to avoid unwanted calls from work. But not now. My cell phone is back with me now.