Otospermophilus beecheyi
I decided on the eastern fox squirrel (Sciurus niger) (and yes, it's introduced into western CA), because of its big size... of course, this individual could be feeding on all those peanuts my friendly scrub jays try to hide in the trees rather than eating them... or it could be pregnant? Like last year's, this one loves sunning on this rock and stares at us through the windows for hours, which unnerves me. Where's my fatty red-shouldered hawk when I want a "hit" done?
ps 09/24/10 - Hahaha! I'm now deciding the subject of the fuzzy pic above is a CA ground squirrel, not an eastern fox squirrel. Although, I do believe I've seen fox squirrels chasing each other in the Douglas-fir next to our balcony. For the past month I've been watching this particular squirrel and looking for identifying features such as the white eye ring characteristic of CA ground squirrels. I'm correcting the label below the pic, but I'm choosing to keep my original post unedited to show how I have difficulty identifying even the most common animals. We also have a new raptor in the vicinity. It's smaller than the red-shouldered hawk and its breast is mostly white with brown flecks. Don't know what it is, yet, and will keep trying to take its pic to post on Nature ID.