Re:Red-tailed White Cockatoo

To: "ozbird" <>
Subject: Re:Red-tailed White Cockatoo
From: "Susan Myers" <>
Date: Fri, 23 Oct 1998 18:32:18 +1000
> This morning I saw a flock of 22 R-t B-C s  including one bird that at
> glance looked like a Sulphur-crested until I realised the jizz was wrong
> it had orange in the tail feathers! A strange looking bird with dirty
> white/grey plumage apart from the tail feathers . I had really good looks
> it - from about 15m and it flew right overhead a couple of times with the
> others. It was noticeable that a Black Kite was hassling it and not the
> others.
> I wondered if albino Red-tailed Blacks had been recorded before.

We had a similar thread run on Birding-aus about a year ago in relation to
another species which I now cannot recall. It was probably an aberrant
plumage called eumalanistic schizochroism seen in a number of species
(although in this case I suppose it could be an albino - did it have red
eyes?). A few months back I saw a Black Swan in the Colac area (western
Vic) that wasn't black at all - it looked very strange - and, no, it wasn't
a feral Mute Swan! 
Schizochroism is apparently a term used to refer to birds which lack the
normal pigement whatever that may be; in the case of the eumelanistic type
obviously the melanin is in short supply. The question is what causes it
though - diet or genes or something else?

Susan Myers
phone: +61 3 9819 2539
Email:Susan Myers 
Susan Myers
phone: +61 3 9819 2539
Email:Susan Myers 

<Prev in Thread] Current Thread [Next in Thread>
  • Re:Red-tailed White Cockatoo, Susan Myers <=

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