I personally wouldn't make a call from this photo (Either Horsfield's or Shining Bronze-cuckoo). What was the reasoning from those that IDed it on the chatline?
I suspect this is a young individual if it is a Horsfield's as their adults have a much more distinctive line through the eye. That said, on second inspection, I'm fairly sure there shouldn't be brown behind the eyes in a shining, so while this does not seem line much of a line, should be okay for Horsfield's. Will leave it for Chris D to make the final call