Mystery bird

To: Mark Clayton <>
Subject: Mystery bird
From: Murray DELAHOY <>
Date: Sun, 19 Mar 2017 22:38:10 +0000
Hi Mark,

Can’t help with Mark’s bird but flocks of cockatoos/corellas seem to sometimes harbour interesting interlopers.

We’ve had a couple of recent visits from an “orange crested” cockatoo (I believe Citron-crested ssp. of Indonesian Yellow-crested Cockatoo) that is keeping company with a flock of S-c cockatoos and corellas in the North Canberra area. It’s slightly smaller than a sulphur-crested but bigger than a galah.  We’ve been seeing this bird occasionally for about five years.  From previous discussion on the chat-line I gather it is an escapee, but it seems to be surviving pretty well in the wilds of Canberra.

Kind regards,
Murray Delahoy

On 20 Mar 2017, at 8:45 am, Mark Clayton <> wrote:

It is an extremely rare event, if ever in Australia, when I am not sure as to the species of bird that I am looking at. This has just happened in my backyard in Kaleen. I sometimes throw a bit of birdseed out for the Crested Pigeons (an ANU student working on the species colour banded many in my yard a couple of years ago). Invariably this also brings in a few Sulphur-crested Cockatoos and Little Corellas – on two occasions recently also a Long-billed Corella – but the bird that joined the Sulphur-crested Cockatoos this morning has me flummoxed! Superficially it is a S-c Cocky but bigger, especially around the head area (side by side with a S-c C) and looked similar to a White-crested Cockatoo Cacatua alba of the Moluccas but which is slightly smaller, appears not to have a yellow crest but has yellow blotches on the head and upper chest, and a very limited amount of yellow on the underwing. It also has VERY large feet and really looks like a S-c C on steroids. I can’t think of any other species that it can be. The Yellow-crested Cockatoo Cacatua sulphurea of Indonesia/Lesser Sundas  is smaller than the S-c C, and I don’t think a hybrid with either of the corellas would be this large.
Anyone care to comment?

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