Female Amur Stonechat (Saxicola stejnegeri, 东亚石䳭).
Rather, it in all probability an Amur stonechat though it could also be a Siberian stonechat which is less common in Hunan but almost identical in appearance. I see stonechats in Fall, and Spring by the river: om cool days they are rotund with ruffled feathers while warm weather makes them much sleeker in appearance.
