I saw it bathing and, more surprising, singing !
This guy was skulking in the undergrowth of a small garden but perched high in a bush to sing.
I decided to share here the serie "M.Ruby in the bath" despite the low quality ("action scene" with low light + high ISO = no miracle); I just find those pics funny...
Female Daurian Redstart in the same area. Very shy bird, this shot was the best I could manage. The white wing-patches and the reddish tail/rump are obvious features.