It's small, dun-coloured, has a very pronounced bobbing or curtseying
motion, and its short tail feathers stick up almost at right-angles to
its back. Its wingbeats seem louder and more staccato than most birds of
its size.

It has made a nest in a vertical earth bank under a fringe of long
overhanging grass and seems not to be at all phased by my proximity. I'm
intrigued to know what kind of bird it is.

Brian Mitchell