Hi Damien,
That's an interesting and different explanation for the eyes. I wonder if it
is applicable to other species.
To be fair though, the person who wrote the blog is a bird photographer who was
just writing about something observed, and is unlikely to have known about a
recent scientific paper.
Thanks for the explanation though.
On 20/04/2012, at 5:36 PM, Damien Farine wrote:
>
> 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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