I believe this is a House Wren, which some consider an ordinary looking bird. But what I always notice is that beautiful tail often tilted upward.

The website, "All About Birds" http://www.allaboutbirds.org/guide/House_Wren/id) said this about the house wren - "A plain brown bird with an effervescent voice, the House Wren is a common backyard bird over nearly the entire Western Hemisphere. Listen for its rush-and-jumble song in summer and you’ll find this species zipping through shrubs and low tree branches, snatching at insects. House Wrens will gladly use nestboxes, or you may find their twig-filled nests in old cans, boots, or boxes lying around in your garage."

"Small and compact, with a flat head and fairly long, curved beak. Short-winged, often keeping its longish tail either cocked above the line of the body or slightly drooped."