Golden-crowned sparrow was a new species for me on this trip, and prove to be fairly numerous on our walk to Crissy Fields, with others seen in Golden Gate Park. I like the yellow on it's forecrown, a nice tough on what is relatively a dull coloured bird! This species was often in mixed flocks of white-crowned and song sparrow.
The song sparrow was photographed at Crissy Fields - I've a bit of a soft spot for photographs of birds on rusty wire fences (see below, yellow-rumped warbler...), very "rustic"?... maybe not!