Birdbath

I'm just learning about birds. Is this a Wilson's warbler, a house sparrow, or what?What a joy to see this little guy come out of the avocado tree to bath and drink in our waterlily pond!(Remember to click on the photos to make them bigger; this was a pretty tiny bird and I was about twenty-five feet away.)
(You can see the rest of the pictures of this little bird on our photo album page.