Muscicapa latirostris

The Asian brown flycatcher (Muscicapa dauurica) is a small insectivorous flycatcher, 13 cm long including the cocked tail, that breeds in Japan, eastern Siberia and the Himalayas. It is migratory, wintering in tropical southern Asia from southern India and Sri Lanka east to Indonesia. It is similar in shape to the larger spotted flycatcher but relatively longer-tailed, with a relatively large dark bill. The correct specific epithet for the species is disputed; the name dauurica refers to Dauria in south-eastern Siberia. (Wikipedia, general species account)