Warbler ID please

Taken in Sungai Sedim, Kedah. Is this a Rusty-rumped Warbler?

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Definitely not a Locustella warbler (Rusty-rumped and Lanceolated), this is a leaf-warbler, but lack of wing and tail and vent, is hard to be certain, could probably be a Japanese Leaf Warbler (a split from Arctic Warbler) for being yellowish, or else Yellow-browed could be considered as suspect as well but need better view on wings to be certain on that.

Thanks jytou, too bad I don't have the tail portion.