This is a male. Unlike the White-capped Redstart in which males and females look the same, female Plumbeous Redstarts are drab and look very different. Both species were fairly common along rocky river banks where they foraged with aerial acrobatics. Some authors call this bird the Plumbeous Water-redstart. Two subspecies are recognized. The is the widespread nominate race. Another race characterized by the female's darker plumage is confined to Taiwan. This species has been traditionally placed in the genus Rhyacornis but most recent authors merge it into Phoenicurus following the 2010 molecular study by Sangster et al. The whole assemblage was traditionally classified in the Thrush family (Turdidae) but has since been moved to the Old World Flycatchers (Muscicapidae) by most authors, HBW being the notable exception. Canon PowerShot SX50 HS
References:
Collar, N. & Christie, D.A. (2016). Plumbeous Water-redstart (Rhyacornis fuliginosa). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/58504 on 10 July 2016).
Rasmussen, P.C. & Anderton, J.C. (2012) Birds of South Asia. The Ripley Guide. Vols. 1 and 2. Second Edition. Smithsonian Institution. Michigan State University & Lynx Edicions, Washington. D.C., Michigan & Barcelona.
Sangster, G.; Alström, P.; Forsmark, E.; Olsson, U. (2010). "Multi-locus phylogenetic analysis of Old World chats and flycatchers reveals extensive paraphyly at family, subfamily and genus level (Aves: Muscicapidae)". Molecular Phylogenetics and Evolution 57: 380–392. doi:10.1016/j.ympev.2010.07.008.