Please note that Rogers link is slightly incorrect
Try this one:
http://www.aviceda.org/abid/newimages.php?action=latestimages&p=1&pagesize=1
Tom
On Tue, Dec 28, 2010 at 3:18 PM, Roger McNeill
<>wrote:
> All,
>
> Back in Oct a Jack Shick took a photo of a cookilara taken off Lord Howe on
> the
> way to Ball’s Pyramid. At the time he thought it might have been a
> Gould’s. I
> was sent a copy by a friend who thought it may be something else...I
> believe it
> to be a Pycroft’s.
> While living in NZ I spent a fair bit of time trying to suss out the
> differences
> between Cook’s and Pycroft’s and this bird is a very strong candidate for
> the
> latter. I have seen about a hundred Pycroft’s and many hundred Cooks and
> it has
> all the indicative features that I am familiar with for Pycroft. There are
> many
> that say these two species can’t be separated at sea but I believe that
> there is
> a bit of sliding scale with individuals on the far end being distinctive
> and not
> too difficult to separate.
> Because this would be a significant record for AU let me toss it into the
> public
> forum for debate. I am in no way an expert but a few mates and I came up
> with
> some rules of thumb that were good ways to separate the two. Of these, the
> features which stand out to me are:
> 1. Strong dark grey hood and distinct eye-line
> 2. Deep, thick and distinct mark under the eye which is greater
> behind
> than in front of the eye
> 3. Unbroken underwing carpal bar
> 4. And most distinctive which I have never seen published anywhere is
> a
> slight extension of the central tail feathers on Pycroft’s vs Cooks.
> I have asked Tom Tarrant to post this for me at the Australasian Bird Image
> Data
> Base. Please find the image at the following link:
>
> http://www.aviceda.org/abid/newimages.php?action=latestimages&p=1&pagesize=1
> Cheers,Roger<http://www.aviceda.org/abid/newimages.php?action=latestimages&p=1&pagesize=1%0ACheers,Roger>
>
>
> Roger McNeill
> Samford Valley, SEQ
>
>
>
>
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>
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>
--
********************************
Tom Tarrant
Kobble Creek, Qld
http://kobble.aviceda.org
http://picasaweb.google.com.au/aviceda/
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