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Hasties Swamp Pochards and Occam's Razor

To: "Dimitris Bertzeletos" <>, <>
Subject: Hasties Swamp Pochards and Occam's Razor
From: "Alan Gillanders" <>
Date: Tue, 28 Oct 2014 07:45:37 +1000
The observer is Welsh born and raised and was a birder watcher before coming to Australia. I did not ask him about how he ruled out the other species.
Alan



Alan's Wildlife Tours
2 Mather Road
Yungaburra 4884

Phone 07 4095 3784
Mobile 0408 953 786
http://www.alanswildlifetours.com.au/
-----Original Message----- From: Dimitris Bertzeletos
Sent: Monday, October 27, 2014 09:40 PM
To: 
Subject: Hasties Swamp Pochards and Occam's Razor



From: 
To: 
Subject: Hasties Swamp Pochards and Occam's Razor
Date: Mon, 27 Oct 2014 13:35:59 +0200




Hello all,

First off I have no idea how experienced the observer is with north hemisphere ducks. So if they have considerable experience and the identity is beyond doubt- a male Red-crested is unmistakable in full breeding plumage- please ignore this post.

But considering that the only diving duck from the north hemisphere depicted in any Australian field guides is the R-c Pochard and the extreme unlikelihood of northern diving ducks reaching Australia in the first place (not unlikely but most don't migrate as far south as dabbling species). I am wondering if the the other red-headed diving ducks of the north hemisphere been considered (Common Pochard, Redhead, Canvasback) and Eurasian Wigeon?

Cheers,

D.

Date: Mon, 27 Oct 2014 20:27:45 +1100
From: 
To: 
Subject: [Birding-Aus] Hasties Swamp Pochards and Occam's Razor

Hi Carl and Nikolas,

I'm reasonably confident that there are no Red-crested Pochards in
captivity in Australia.

Australia has strict importation restrictions on birds and this has
greatly limited what captive birds have entered the country over the
last 30-40 years. As a result exotic waterfowl kept in Australian
collections are pretty much limited to species that were established in
captivity before that time. Off the top of my head the list is....

Egyptian Goose
Canada Goose
Mute Swan
Ruddy Shelduck
New Zealand (Paradise) Shelduck
Mandarin Duck
Carolina Wood Duck
New Zealand Scaup
+ various domestic forms such as Greylag Goose, Muscovy and Mallard

Cheers,
Rohan

--
Rohan Clarke
www.wildlifeimages.com.au

Latest updates
http://www.pbase.com/wildlifeimages/root&view=recent


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