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
>
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--
John Leonard
Canberra
Australia
www.jleonard.net
"I rejoice that there are owls." Thoreau
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