> I have often seen the white morph of Grey Goshawk accompanying flocks of > Little Corellas and Sulphur-crested Cockatoos. I wondered why until some > years ago I saw a bird drop out of such a flock and snatch a pigeon from the > powerlines.
I’d never heard of this idea until it came up earlier. It’s a really appealing concept and I’m glad to hear that it’s observable in the field.
On Sat, Jan 12, 2013 at 1:00 PM, Denise Goodfellow < goodfellow@bigpond.com.au> wrote:
> I have often seen the white morph of Grey Goshawk accompanying flocks of > Little Corellas and Sulphur-crested Cockatoos. I wondered why until some > years ago I saw a bird drop out of such a flock and snatch a pigeon from > the > powerlines. > > > Denise Lawungkurr Goodfellow > 1/7 Songlark Street, > Bakewell, NT 0832 > 043 8650 835 > > PhD candidate, SCU > Vice-chair, Wildlife Tourism Australia > Nominated for the Condé Nast international ecotourism award, 2004 by the > renowned American website, Earthfoot. > Wildlife Adviser, BBC¹s ŒDeadly 60¹ > > Birds of Australia’s Top End and Quiet Snake Dreaming available on > amazon.com > A second edition of Fauna of Australia¹s Top End used by the University of > NSW as a text for 12 years is now under preparation. > > ‘It gave me huge insight into the lives’ of Aboriginal Australians¹, > Jonathon Franzen, American author, birder, conservationist (August, 2011) > on Quiet Snake Dreaming. > > The best guide in Darwin is Denise Goodfellow. Bo Beolens, the Fat Birder. > > www.denisegoodfellow.com.au > > > > > On 12/1/13 8:31 AM, “Greg and Val Clancy” wrote: > > > My understanding is that the white morph of the Grey Goshawk was able to > > survive in a forest situation where it stands out like the proverbial > > because it resembles white coloured cockatoos. I don’t know if there is > any > > science behind that claim though. > > > > > > Greg > > Dr Greg. P. Clancy > > Ecologist and Birding-wildlife Guide > > PO Box 63 Coutts Crossing NSW 2460 > > 0266493153 0429601960 > > > > —–Original Message—– > > From: David Adams > > Sent: Saturday, January 12, 2013 9:26 AM > > To: David Adams > > Cc: COG line ; Birding-Aus > > Subject: Re: [Birding-Aus] [canberrabirds] Why are the C. Sparrowhawk & > > B.Goshawk so similar? > > > >> An all white raptor in the forest? > > > > John Leonard wrote to mention the White Hawk, an unusual New World forest > > raptor: > > > > > http://neotropical.birds.cornell.edu/portal/species/overview?p_p_spp=124796 > > > > Despite often being nearly all white, these birds seem to be doing pretty > > well for themselves over a huge area. The behavior section at the Cornell > > site is interesting. it sounds like these birds follow around parties > > of monkeys (arboreal foragers) and coati (ground foragers – relatives > > of Raccoons) pouncing on whatever prey is flushed. Perhaps their > coloration > > is not selected for/against as they’re opportunistic feeders? No > > idea…it’s always easy to make up an evolutionary/ecological story…but > > that doesn’t make it true. > > =============================== > > > > =============================== > > > > To unsubscribe from this mailing list, > > send the message: > > unsubscribe > > (in the body of the message, with no Subject line) > > to: birding-aus-request@vicnet.net.au > > > > http://birding-aus.org > > =============================== > > > ===============================
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