These photos, taken near our hotel shows the slight hook on the tip of the bill. The broad base to the bill and short legs are characteristic of flycatchers in this genus.
Some authors including the current AOU, list this species as M. dauurica but both IOC and Clements corrected the name to M. latirostris following Mlíkovský. It appears that the name dauurica is not only wrong, but a typo as well. Furthermore, the Brown-streaked Flycatcher, Muscicapa williamsoni (including umbrosa), has been proposed as a split from the Asian Brown Flycatcher (Rheindt and Eaton, 2012). At this time, the systematics and nomenclature of these birds appears to be in a state of flux.
References:
Mlíkovský, J. 2012. Correct name for the Asian Brown Flycatcher (Aves: Muscicapidae, Muscicapa). Zootaxa number 3393: 53-56. (PDF)
Rheindt, F.E. and J.A. Eaton. 2012 Notes on the life-history and taxonomy of Muscicapa dauurica umbrosa, an overlooked Bornean canopy bird. Forktail 28:144-146
Digiscoped with Panasonic DMC-LX5 | Nikon FieldScope III | 30XWA |hand-held (no adapter).