Kyatpyin, Ruby Mines district, Myanmar.
Hitherto treated as conspecific with A. ramsayi, but differs in its much richer cinnamon vs buffy underparts (2); extensive pale chestnut vs more restricted buffy-rufous on forehead (2); lightly barred rufous vs bold stone-and-black-barred greater coverts with much more extensive rufous on outer vanes of flight-feathers (3); more ochreish, less grey mantle to rump (ns); and more rufous, less strongly barred tail (ns). Birds in N Thailand and N & C Laos (like yunnanensis but greyer above, with buffy rufous restricted to forehead) evidently represent an undescribed race. Two subspecies recognized.
Unknown race in N Thailand and N & C Laos.