(634) Hemichelidon sibirica rothschildi.
The Yunnan Sooty Flycatcher.
Hemichelidon sibirica rothschildi Stuart Baker, Bull. B. O. C., xliii, p. 156 (1923) (Yunnan).
Vernacular names. None recorded.
Description. Very much darker than any of the other races, almost sooty-black.
Colours of soft parts as in the other races. Measurements as in the other races.
The young in all three races vary from one another as do the adults, though the differences are accentuated in this race by the dark buff colour of the spotting.
Distribution. Yunnan. A bird from the Shan States seems to belong to this race.
Nidification and Habits. Nothing recorded.