One always get into a debate whenever  you see this bird.
It’s  always difficult to positively ID a Dark-Sided Flycatcher in the field.  To  me it’s always difficult to ID them ‘anywhere’! They closely  resemble the more common Asian Brown flycatchers that we’ve developed  some sort of phobia about  uttering the word ‘dark sided’ even when we  think it is one.
This little fella, well I ‘think’  it‘s a  Dark Sided flycatcher, but  I might be wrong here.