|To:||"Philip A. Veerman" <>|
|Subject:||Sulphur-crested Cockatoos colouration|
|Date:||Thu, 28 Aug 2003 19:06:24 +1000|
HI Philip and all,
I'm almost 100% positive that the colouration is not dirt, stain or any other additive that may have come into contact with the cockatoo while nesting.
I have photo documented the bird in question quite comprehensively, with underwing shots, and a "ruffled feather" shot were you can see 'under' the feathers. The pink colouration is visible all over the bird,
I do think that the colouration may have something to do with nesting though, since the colouration would definently be better camoflage for nest holes.
I'm really struggling to find any information about this, and would appreciate any info from any list members.
So far, Duncan Fraser has commented that someone in Gippsland, Vic has reported such as bird, and Annabel Ashworth also reported a friend seeing one in Tamworth, NSW .
What are the options:
1. \ Diet influenced colouration.
2. \ Unknown Age/Sex plumage
3.\ Hybrid bird (possibly LB Corella)
4.\ General Freak of Nature.
5.\ New Species.
Can anyone provide further suggestions?
I would suggest that the pinkish colouration on some Sulphur-crested Cockatoos signifies staining from wood pulp from eucalypt wood, obtained whilst scratching around or excavating a nest hollow.
From: m("callista.com.au","Peter.Fuller");> <m("callista.com.au","Peter.Fuller");>>
To: m("vicnet.net.au","birding-aus");"> <m("vicnet.net.au","birding-aus");">>
Date: Wednesday, 27 August 2003 17:47
Subject: [BIRDING-AUS] Sulfur Crested Cockatoo Colouration
Is anyone able to tell me what the pinkish colouration on some Sulfur Crested Cockatoos signify's?
The cockatoo i noticed it on today, was attending a nest site which leads me to think that its breeding plumage??? The pink colouration extended all over its body and head, and its faint yellow ear patch was much more defined than usual, almost as bright as its crest.
Are these markings based on sex, age, or part of breeding pluamge?
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