Plumbeous Water Redstart (Phoenicurus fuliginosus, 红尾水鸲). Male.
Taken in the evening in the Wulingyuan scenic area in the Zhangjiajie National Forest Park. They are not so common in urban areas but can often be found by fast moving streams, darting from rock to rock devouring flies. I see the grey females much more often than the blue and orange males.