As the thread title reads, which is the subspecies that breeds on "mainland" Taiwan? Clements/e-bird has illex (which would be logical), IOC has atrocaudata (with illex strangely wedged in between in Ryukyu Islands only) and HBW Alive doesn't even mention Taiwan in the distribution, though it is on their map and stated as resident in the text. Quite confusing. Which would be correct?
Last edited: