Ahh but that blog missed out on one crucial bit of information. It is
interesting that they mentioned American oystercatchers because a paper was
recently published describing eye flecks as a reliable sexing method in the
American black oystercatcher. In essence, females have a full eye fleck
whereas males only a small one or none. Thus, it is unlikely that this is
caused by injury! Details of the paper are here: Guzzetti, B. M., Talbot, S.
L., Tessler, D. F., Gill, V. A., & Murphy, E. C. 2008. Secrets in the eyes of
Black Oystercatchers: a new sexing technique. J. Field Orn. 79: 215-223.
Damien
> Date: Thu, 19 Apr 2012 20:49:41 -0700
> From:
> To: ;
> Subject: Re: [Birding-Aus] Blown eyes
>
> Hi Carl,
>
> Thanks for that. Interestingly, that was the site I saw this morning!
>
> Sonja
>
>
>
> ________________________________
> From: Carl Clifford <>
> To: sonja ross <>
> Cc: "" <>
> Sent: Friday, 20 April 2012 1:45 PM
> Subject: Re: [Birding-Aus] Blown eyes
>
> Sonja,
>
> Sorry, can't help you with the cause, etc, but here are some good images of
> "blown eye". Will have give bird's eyes a closer look.
> http://www.mygreatsaltlake.com/2012/02/birds-with-blown-eyes/
>
> Cheers,
>
> Carl Clifford
>
> Sent from my iPad
>
> On 20/04/2012, at 11:58, sonja ross <> wrote:
>
> > I was looking at an overseas birding blog this morning while having a
> > coffee, and it was about "blown eyes", a term I hadn't heard before. It
> > seems to be when the pupil leaks into the iris. Is this a term used here?
> >
> >
> > I've recorded it once that I remember in a photo of a Great Egret, where
> > one eye was normal, and the other had a dark area going from the pupil into
> > the coloured area. Has anyone else seen this?
> >
> >
> > The blog writer speculated about possible causes. Does anyone have
> > thoughts about that?
> >
> > Thanks.
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