Pacific Black Duck - Mallard hybrids

To: "Graeme Stevens" <>, "Kev Lobotomi" <>, "Peter Menkhorst" <>, "Mike Carter" <>, "'Nikolas Haass'" <>, "'Jim Tate'" <>, "'Russell Woodford'" <>, <>
Subject: Pacific Black Duck - Mallard hybrids
From: "Greg and Val Clancy" <>
Date: Sun, 6 Jul 2014 10:24:17 +1000
During the late 1970s or early 1980s a officer form the Conservation Department (not sure of name), based in Wellington New Zealand, visited Australia and I met him in Grafton. He was here to warn us Aussies of the impending threat posed by the introduced Mallard based on the New Zealand experience, which has been disastrous. I was very concerned as I had observed hybrids in Sydney and had observed Mallards associating with Black Ducks in the Grafton area. I have a from a desk calendar on my office which reads "The best way to solve problems is not to create them" so I thought that it would be best to nip the Mallards in the bud. I wrote to the National Parks & Wildlife Service alerting them to the issue. The response from a senior researcher who had carried out research on waterfowl for many years was that as the gene pool of the Pacific Black Duck in Australia was very large the chances of significant disruption from a small number of Mallard genes was very unlikely. So in her opinion there was no problem. I disagreed with her but without any co-ordinated effort at that time Mallard hybrids have increased. It seems to be a human foible that we don't want to do anything about a problem until it is so large that we can't effectively do anything anyway and then then we throw millions of dollars at the problem with little or no effect.



Dr Greg. P. Clancy
Ecologist and Birding-wildlife Guide
| PO Box 63 Coutts Crossing NSW 2460
| 02 6649 3153  | 0429 601 960

-----Original Message----- From: Graeme Stevens
Sent: Saturday, July 05, 2014 3:21 PM
To: Kev Lobotomi ; Peter Menkhorst ; Mike Carter ; 'Nikolas Haass' ; 'Jim
Tate' ; 'Russell Woodford' ; 
Subject: Pacific Black Duck - Mallard hybrids

Just a small addition to this discussion - particularly the record Nikolas

I have undertaken close to 50 Atlas surveys at Warriewood (Sydney Northern
Beaches NSW) in recent years and while pure Mallards are occasionally on the
Warriewood Wetlands reserve and the settlement ponds, they seem to be much
more common and resident along Mullet Creek between the Wetlands and
Narrabeen Lagoon. These appear to be pure Mallards, generally paired.
There are of course plenty of Pacific Blacks on both the Wetlands and the
Creek so the opportunities for an enthusiastic Mallard Drake are plentiful!
I have certainly recorded what I considered to be good hybrids. Mind you
there are other mixed feral hybrids occasionally which could confuse the
issue (Muscovy, Chinese Whites, Khaki Campbell etc). They could certainly do
with a clean out.

Best to all
Graeme Stevens

To: ; ; ;
; ; 
Date: Sat, 5 Jul 2014 00:10:45 +1000
Subject: Re: [Birding-Aus] Pacific Black Duck - Mallard hybrids

Hi all!
Although Mallards fortunately aren't that common in Australia, we can't be
too complacent about there presence. One thing I have noticed is that many
Mallards that I see on ornamental ponds are males (so definitely not a
population!), but since they are males they tend to get randy & if they
have nothing but black ducks to chase I am sure they would go after them.
So the chance of hybrids is quite high! All efforts should be made to
remove these birds, so they don't pollute the native ducks with their
genes!-Kevin Bartram

Birding-Aus mailing list

To change settings or unsubscribe visit:

<Prev in Thread] Current Thread [Next in Thread>

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