Mystery Bird

I was sitting on the patio today when a heard a chittering sound coming from the nearby bushes. I got my camera and zoomed in, but I was only able to get this one shot as the bird kept flittering around the interior of the bush. It was small, brown and looked a little like a wren. Could have been a warbler or vireo but could not find it in my bird book. Any ideas? Probably passing through on it's way south. Update: Think it is a Western House Wren as it had a very similar song