In my opinion this bird is not at all straightforward.
It looks too rufous above for a Rufous-tailed Robin and the jizz does not quit work for me, but otherwise not a million miles away
Female Japanese Robin should have a rufous throat and upper breast and I'm not at all sure about the scaly underpart
Ryukyu Robin has grey cheeks, but the scaly underparts and grey sides actually fits this better than Japanese Robin, but is it rufous enough above - a grotty juv female perhaps?
The dark edges to the undertail coverts look very interesting
Given this mix of apparently contradictory features, how does one decide?
Cheers
Mike
Mike KilburnVice Chairman, HKBWSChairman, Conservation Committee