This is a heavily cropped photo of a bird that I never got very close to, taken in central California at a site where both House Finch and Purple Finch are regular. The sharply streaked sides would make one think it is a House Finch. Everything else, however, says Purple Finch: chunky shape, short notched tail, relatively straight culmen. I feel certain it is a Purple Finch, but I wonder if anyone has other thoughts or experience with similarly streaked Purple Finches.