Candid capture ... very natural-looking. Shame about the fence. I've heard a chipping sparrow, I think, but have not seen one yet. A junco and a pine warbler can sound similar, with the former quieter and the latter high up somewhere near a conifer, while a chipping would be near the ground. Nothing like being ready, camera nearby and shutter button finger well-trained but still retaining that lingering itch.
