Congratulations, on a great find!!! I completely agree the photos do look like a Storm-petrel. In the last photo I think you can even see the light carpal bar.
There is a video of a Swinhoe's Storm-petrel on youtube and it might be worth comparing the flight style with your bird
http://www.youtube.com/watch?v=hNHpIR88dZg
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Last edited by brendank at 31/05/2012 16:39 ]