Seen today in Alameda, near San Francisco Bay. I've had Nuttall's Woodpeckers come by our suet feeder, but this is not a Nuttall's. My guess is a female Downy. Thanks in advance for your comments.
Downy Woodpecker female by Mark Featherstone, on Flickr
Downy Woodpecker female 2 by Mark Featherstone, on Flickr