I stole this post below from Oriental Birding. This information is interesting as Hutton's and Persian Shearwaters seem to overlap in the mentioned region.



> From: "Crossland, Andrew" <
> Date: 1 December 2013 7:37:44 AEDT
> To: <orientalbirding@yahoogroups.com>
> Subject: [OB] Huttons Shearwater (puffinus huttoni) - then next new seabird for south-eastern Indonesian waters?
> Hi folks,
> Huttons Shearwater - a close relative of Manx Shearwater - breeds in the
> alpine zone of the Seaward Kaikoura Mountain range in the north-east
> part of New Zealand's South Island. Part of the population winters
> around the coastline of Australia and until recently this winter range
> was thought to be confined to Australia's eastern seaboard, southern
> coast and the Western Australia coast as far up as the NW.
> A soon-to-be-published study on movements of this species based on a
> number of birds carrying geo-locators has found that part of the
> population actually performs an anti-clockwise circum-navigation of
> Australia, by flying NW across the Tasman Sea from New Zealand, up along
> the North Queensland coast, over into the Gulf of Carpentaria, through
> the Arafura Sea and Timor Sea, and then turning the corner and flying
> down the full length of Western Australia, before returning toNnew
> Zealand by flying eastwards right under Australia.
> For a period of several weeks large numbers congregate in an area well
> north of Darwin and not far off eastern Indonesia. This apparently
> approximates to the edge of the continental shelf and may well be a
> "hotspot" for other seabirds also? Its easily conceivable that some of
> these birds move into Indonesian territorial waters and certainly this
> could be the case during storm events.
> I understand from the researchers that they will publish the paper in
> the Ornithological Society of New Zealand's journal, "Notornis" in the
> next year or so, at which time much more detail and maps of geodata
> tracking will be available. In the meantime, if anyone happens to be
> doing pelagic birding offshore from anywhere between Bali and Papua in
> approximately March - July, then take extra care in identifying any
> medium-sized "manx-like" shearwaters seen. There's a good chance they
> may be Huttons Shearwater.
> Pics of Huttons Shearwater can be seen at the following links:
> http://www.nzbirdsonline.org.nz/spec...ons-shearwater
> http://www.aviceda.org/abid/birdimag...ies&fid=56&bid
> =728
> Cheers
> Andrew Crossland
> NZ