G’day Tony,
Actually Tropical Shearwater isn’t really covered for Australia in Christidis
and Boles. C and B kept Audubon’s on the list to cover this category of
Shearwater occurring in Australian waters but this is now an out of date
concept in light of DNA analysis by Austin et al 2004 which shows the birds
from the Indian and Pacific are a separate taxa which they named Tropical
Shearwater to those of the Atlantic which they suggest retain the Audubon’s
title. Curiously this new work is quoted by Christidis and Boles in their
latest edition, so they must have read it. The question is why the research
findings weren’t adopted by C and B in light of the fact they were aware of the
research.
Cheers Jeff.
From:
Sent: Sunday, 20 December 2009 3:40 PM
To: Simon Mustoe
Cc: ; ;
; ; ;
Subject: Possible Newell's Shearwater, Marion Reef, Coral Sea
Simon,
Thanks for the note we will look forward to the submission. Technically
Tropical Shearwater is already on the Australian list but is listed (if I
understand correctly) as Audubon's Shearwater Puffinus lherminieri.
A few interesting links though:
http://www.birds.cornell.edu/clementschecklist/corrections/updates-corrections-dec-2009
http://www.birdforum.net/opus/Audubon's_Shearwater
Cheers
Tony
---- Simon Mustoe wrote:
>
> Hi,
>
> Just a quick note on the Newell's report from Marion Reef. It seems that we
> made the drew the same conclusion as others in the past, and the moral as
> always, is that the field guides are not complete. The Audubon's complex
> includes a group of nesting islands home to birds collectively called
> "Tropical Shearwater" and the size of the bird we saw seems to fit this
> group. At the moment, it is generally considered as one 'species' though this
> probably belies a more complex genetic make-up. From talking to Mike Carter,
> who has also seen birds in the Coral Sea, Tropical Shearwaters from New
> Caledonia fit the description of the bird we saw and are not dissimilar to
> Newell's in terms of markings. If anything, Newell's is even larger and more
> Manx Shearwater-like. So, we will be looking to submit this under Tropical
> Shearwater, possibly along with Mike's observations. This species is not
> currently on the Australian list, so this is an exciting find and would have
> made the Lihou trip well worthwhile for every birder who came along. Who
> knows what else there is to discover out there!!
>
> Regards,
>
> Simon.
>
>
>
> > Date: Sun, 13 Dec 2009 22:17:55 +1000
> > From:
> > To: ; ;
> >
> > CC:
> > Subject: [Birding-Aus] Possible Newell's Shearwater, Marion Reef, Coral Sea
> >
> > Hi all,
> >
> > Exciting news from Simon Mustoe on the Lihou expedition in the Coral Sea.
> > They have found and photographed a possible Newell's Shearwater. You can
> > see some (fairly grainy) photos at
> > http://oceans.wildiaries.com/pictures/13937 however I'm sure when they get
> > back to port (and aren't transmitting data via satellite phones) that they
> > will post better shots. Below is Simon's description of the bird. Also, if
> > you haven't already checked it out, video #3 from the Lihou expedition is up
> > with some great underwater footage at http://lihou.wildiaries.com/
> >
> > Regards,
> > Chris
> >
> > ----------------------------------
> > Hi,
> >
> > Just on the east side of Marion Reef yesterday at about 16:30, we
> > encountered a medium-sized black and white shearwater flying with about 400
> > Wedge-tailed Shearwaters, a dozen Red-footed and Masked Boobies, fifty
> > Black-naped Terns and a few Common Noddies. The wind conditions were a fresh
> > (15 knot) southeasterly, clear skies and a 1.5m swell. The views were
> > obtained from the forecastle at a height of about 6m above sea level. The
> > bird in question did not approach close to the vessel. The minimum distance
> > was about 100m but it flew alongside for about 2 minutes, then returned for
> > a brief and slightly closer pass later. Photos were obtained during the
> > first sighting (see below).
> >
> > The most immediate noticeable feature was the large amount of white around
> > the tail. This was seeable without binoculars, giving the impression of an
> > almost white rump, and was much more extensive than in the similar-sized
> > Fluttering Shearwater. The black under the eye (see images) would rule out
> > Little Shearwater but the size and flight style was not right for the latter
> > species, which tends to fap in quick succession, inter-dispersed with glides
> > and is tiny compared to Common Noddy (see photo, with species side by side).
> > This bird was shearing more in the style of a Fluttering Shearwater and
> > flying strongly. Hutton's Shearwater could be ruled out by the combination
> > of base colour (black, as opposed to brown); lack of dusky markings under
> > the wings; lack og dark undertail coverts and lack of hood.
> >
> > The bird had thick dark trailing edges to the underwing and indistinct
> > axillary markings (see photo). The photos show no dark undertail coverts and
> > the white extending down the centre of the tail, indicative of Newell's
> > Shearwater. Although white extending up behind the eye is not apparent, it
> > seems to lack any collar, which would be a feature of Townsend's and
> > Fluttering Shearwater. Of all these species, Newell's is most likely as it
> > breeds in June and would disperse in other months. Fluttering breed in New
> > Zealand in October / November and Townsend's at this time of year off
> > Mexico.
> >
> > More to follow, including BARC submission.
> >
> > Simon Mustoe, Nathan Waugh, Dave Stickney, Jim Caine.
> > ===============================
> > www.birding-aus.org
> > birding-aus.blogspot.com
> >
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