Unfortunately I never got any shots of the spread tail. This pic is the best I have of the folded tail. If this was a male then I think that the shape of the dark markings might make it more likely to be Allen's; I don't know if the same would apply to females.
Allen's does breed in Southern California, Rufous would be a migrant. I left my Lane SoCal guide in California so I don't have access to the occurrance bar graphs which also might be helpful.