canberrabirds

inverse yellow tailed black cockatoo

To:
Subject: inverse yellow tailed black cockatoo
From: "Geoff Kay" <>
Date: Wed, 28 Sep 2005 00:15:25 +0000
Hi All,
I was visiting a friend out near Macs Reef Road and upon walking around in the casuarina stand she has saw a pretty unique and fascinating thing...

...a Yellow-Tailed Black Cockatoo...completely invese (ie, black tail flashes and completely yellow all over). Have any of you guys seen / heard of this thing happening in YTBC's or any other species before? I 'm curious to know how often this genentic mixup occurs (it complements the albino brushtailed possum I've seen in tassie too!)

Cheers, Geoff.



  .--_/\        Geoff Kay
/       \        'Waminda' c/o Hall
\_.--.._/        PO ACT 2618
       v





From: "Clifton" <>
To: <>
Subject: [canberrabirds] 3 raptors
Date: Tue, 27 Sep 2005 23:23:53 +1000

On a trip to Orange last week, 2 interesting sightings and one that amazed me.

1. Just N of Cowra on the Canowindra Rd a Spotted Harrier on the wing over old stubble.

2. Peregrine Falcon with prey (Starling ?) in talons flying over suburban Orange.

3.On the Canowindra/Cargo/Orange Rd I spotted a Wedge Tailed Eagle on the ground in a cereal crop. I wondered if it had killed a rabbit or hare (the crop was too tall to see). 200m further on there was another WTE between the road and fence also sitting on the ground. I had a sinking feeling as I pulled up and walked back up the road as I expected to find it had been in a collision with a car. As I approached, it flew up with something in its talons and dropped it before reaching fence height. The WTE left the scene. The bundle was 2 young Crows, just about fully feathered but in my view not at the flying stage. One was dead and the other OK but clinging tightly to its dead sibling. I located the 2WTEs in a tree further down the valley and they were being harrassed by 2 Crows (Aust Ravens). On returning two days later, the dead juvenille was unmoved and a Crow was calling in a nearby tree but I didn't have time to look for a living Juvenille.

So what happened. I have a theory. The WTEs raided the nest of the Crows and one WTE took 1 sibling and the other also took 1 but the third sibling got a free ride by hanging on with a vice like grip to its dead sibling.

Question. Have WTE ever been recorded as nest raiders? Is there another explanation for the situation I found?

I also saw a flight of 8 Supurb Parrots just S of Boorowa.

Graeme Clifton



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