White phase Grey Goshawk

[Goodfellow <>]

 

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I have seen this bird flying with a flock of Sulphur-crested Cockatoos, and  also with Little Corellas.  One launched itself out of the flock onto unsuspecting Bar-shouldered Doves sitting on wires below.  I also have a photo of a White Goshawk perched on a rock at Bardedjilidji, Kakadu NP, along with Sulphur-crested Cockatoos.
Denise L Goodfellow
On 14/04/2009 6:57 PM kbrandwood wrote:

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
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