Blanf., J. A. S. B., xli, 2, p. 51 (1873). Type, R. fuliginosa.
The genus Rhyacornis contains one species only, which extends from the Eastern Himalayas to Formosa and which is remarkably constant in coloration throughout nearly the whole of this area. It is closely allied to both Phaenicurus and Chaimarrhornis. From both of these, however, it differs in the shorter tail and in the strong rictal bristles; from the latter also it differs in the sexes being totally different in colour, the female being practically all grey with no red on the tail.
The Formosan form has been separated by Ogilvie-Grant under the name of R. f. affirm.