Steve, I am in no way, shape or form an expert on bird life but last
summer (or maybe the one before) I had a hawk enjoying my bird
bath!!!! After much picture-taking and much picture-studying, we
decided it was a Cooper's Hawk. I only mention this because the color
of the front feathers in your photo reminds me of "my" hawk.... Here is
one photo of a Cooper's Hawk (from the internet, not from me.) Not
sure about "huge" though - they are quite large compared to most birds
you probably see in your yard but having grown up on a farm, I think
Cooper's is not the hugest in the hawk world.
Karen
Into the Wild: Meet the Cooper's hawk, Portland's deadliest bird | The
Portland Phoenix