I have only seen Ogilviegranti once, on the breeding grounds, but my memory is that these look tiny, similar in size to Pallas's. I don't get the same impression for this bird and Thomas suggests it looked bigger than Yellow-browed. Also I think the trunk-feeding behaviour is not a feature of Ogilviegranti.
To be honest, I think this bird looks fairly typical of the white-bellied 'Blyth's-type' leaf warblers that we get regularly in HK. The identity of these is still uncertain, but they are generally treated as being either fokiensis or claudiae.
