Thanks Paul and Dion,
Yes, we never really considered Kermadec and Herald as 'serious' contenders but
still wanted to be sure what it was. The concensus is that it is a Great-winged
(Grey-faced).
Re: the White-necked (dare I say "type"), I'm sourcing images of the underwing
from the proper photographers who were on-board, as well as size-comparison
shots. I didn't get any of the latter and admittedly didn't make an effort to
do so on the day. I did comment to Steve that the flight pattern of the bird
was much more shearwater-like than typical large Pterodroma flight. But I've
seen quite a few White-neckeds before and I certainly cannot say I noticed
anything overly different jizz-wise on this bird.
Mick
________________________________
From: Paul Walbridge <>
To:
Sent: Tuesday, 24 April 2012 7:21 AM
Subject: Re; Leucistic Providence Petrels.
Hi Dion, Mick, I often see leucistic Providence Petrels up here and it
shouldn't be confused with belly plumage wear commonly seen later in the season
(August-October) in worn adult birds. We photographed one on the recent sea
mounts trip which had a broad crescent of pure white feathers in the breast and
in addition to the normal whitish face feathering had frosty white feathering
going up further over the head. The most extreme example I've seen was a bird
in 1998 (can't relocate photos taken at the time) which had the general plumage
configuration of a Tahiti Petrel, which no way could be attributed to plumage
wear. As Dion points out Providence Petrels are almost identical in structure
to Grey-faced Petrels, not at all like Kermadec and even less like Herald. A
lot of Kermadecs (but not all) can also show a whitish leading edge to the
inner wing but Herald shows an extensive pale 'flash' down through the
secondaries. Cheers - Paul.
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