Chris,
Great photos!
HANZAB plates very clearly depict the rufous phase of Brown Falcon as having
yellow cere and orbital ring. Though the text misleadingly, only refers to grey
or white. So I assume there is a common precedent amongst the rufous forms to
have this yellow bare part colouring.
Regards,
Simon.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Simon Mustoe
Tel: +61 (0) 405220830 | Skype simonmustoe | Email
Visit BIRD-O at http://www.bird-o.com
Follow BIRD-O on Twitter http://www.twitter.com/birdodotcom
Like BIRD-O on Facebook? Visit
http://www.facebook.com/?ref=logo#!/pages/Bird-O/117732794921095
Email BIRD-O at
> From:
> To:
> Date: Tue, 4 Oct 2011 00:47:17 +0930
> Subject: [Birding-Aus] Brown Falcons with yellow cere and bare facial parts
>
> G’day birders,
>
> I’ve got a question which has been nagging at me for a while. I hope someone
> will know something.
>
> Brown Falcons keep turning up with yellow ceres and bare facial parts. I have
> a growing collection of photographs of these birds from Lake Eyre through
> Central Australia and out to the western extremities of the Tanami Desert.
>
> Where does this colouring come from? Is this a regional variation? Is anyone
> aware of any research/study that has been done on this subject?
>
> Some photos of my latest encounter with this colour variation are on my blog ;
>
> http://comebirdwatching.blogspot.com/2011/10/brown-falcon-and-thorny-devil-study-of.html
>
> I’m intrigued.
>
> Cheers,
>
> Chris Watson
> Alice Springs
> ===============================
>
> To unsubscribe from this mailing list,
> send the message:
> unsubscribe
> (in the body of the message, with no Subject line)
> to:
>
> http://birding-aus.org
> ===============================
===============================
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
http://birding-aus.org
===============================
|
