birding-aus

White phase Grey Goshawk

To: Birding-aus <>
Subject: White phase Grey Goshawk
From: John Leonard <>
Date: Tue, 14 Apr 2009 19:19:15 +1000
Perhaps thet're not flying with the Cockies to try to capture one of
the Cockies, but as a way of getting closer to other prey, which
wouldn't pay attention to a flock of Cockies?

John Leonard

2009/4/14 kbrandwood <>:
> Hello everyone, How many of you have seen the white phase of the Grey Goshawk 
> flying with a flock of Sulphur Crested Cockatoo. I saw it once when I lived 
> in Baulkham Hills, the goshawk leaving the flock and perching in a 
> photographic position for me. HANZAB mentions this behaviour but gives no 
> reason for it. Last Thursday at my home I watched a group of ravens harassing 
> a white bird which I called immediately a white goshawk.due to the harassing 
> actions of the ravens. It perched high in a tree above the house and I ran in 
> to get my camera and took a couple of shots. I did not have my bins handy so 
> could not confirm the ID of the bird as it was very high,my wife confirmed it 
> with her bins.As it left the tree chased by the ravens I immediately said to 
> my wife that's not a goshawk its a cocky as the flight was that jerky flight 
> often performed by S C Cockatoos during short flights and is very 
> characteristic of this species. However I was not convinced and had a look at 
> the pics and there it was a white phase of the Grey Goshawk. My Qs is could 
> it be that flying with other white birds is a hunting ruse to surprise its 
> prey and could this mimicking of the flying action of the SCCockatoo be to 
> the same end. Anyone else wittinesses these two behaviour patterns ?
> keith b the beautiful Hawkesbury 60km N/W of Sydney
> www.birding-aus.org
> birding-aus.blogspot.com
>
> To unsubscribe from this mailing list,
> send the message:
> unsubscribe
> (in the body of the message, with no Subject line)
> to: 
>



--
John Leonard
Canberra
Australia
www.jleonard.net

"I rejoice that there are owls." Thoreau
==============================www.birding-aus.org
birding-aus.blogspot.com

To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to: 
=============================
<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the birding-aus mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU