I'd really like to be able to ID all the local hawks, but until I'm willing to carry around binoculars and/or a better, larger camera, my learning is slow going. So, after much comparing of photos and finding this great Project FeederWatch page, I've concluded what I have here is a Cooper's hawk, not a sharp-shinned hawk (Accipiter striatus). I focused on its capped (vs. hooded) head and tubular body shape.