NSW Ostriches

To: Chris Sanderson <>, Tony Russell <>
Subject: NSW Ostriches
From: Nikolas Haass <>
Date: Tue, 26 Oct 2010 23:04:44 -0700 (PDT)
Hi Chris,

Thanks for that. I was a bit surprised by a few posts  and was about to send 
a similar mail for clarification - but now  there is no need!


Nikolas Haass

Sydney, NSW

From: Chris Sanderson <>
To: Tony Russell <>
Cc: Nikolas Haass <>; birding-aus  <>
Sent: Wed, October 27, 2010 10:51:23 AM
Subject: NSW Ostriches


As I'm sure you know, vagrants are treated  differently only if they got 
themselves here.  For a deliberately  introduced feral, Australian birders 
typically use a "10 years breeding  in the wild" rule, because it's easy, 
however as Nikolas points out that  may not always make sense for things like 
Ostrich and Parrots which  have long lifespans.  However I think with birds 
breeding in the wild,  10 years could be enough to produce 3 generations 
(original birds having  chicks which then have chicks etc.) as just because the 
original adults  haven't necessarily died yet doesn't mean their grandchildren 
aren't  already breeding successfully.  So as far as I'm concerned, these  
Ostriches are as viable as the Peafowl or Pheasants on Rottnest Island,  or 
Guineafowl wherever it is people can tick those.  If you choose to  tick ferals 
(and why not?  They are a part of Australia's fauna now),  then I say go for 


On Wed, Oct 27, 2010 at 8:51 AM, Tony Russell <> wrote:

Looks like the three generation thing is out the window then - bit silly
>anyway and impossible to apply to vagrant birds.
>-----Original Message-----
> On Behalf Of John Tongue
>Sent: Tuesday, 26 October 2010 10:34 PM
>To: Nikolas Haass
>Cc: birding-aus
>Subject: Re: [Birding-Aus] NSW Ostriches
>I wonder whether everyone will wait for three self-sustaining generations of
>Arabian Shearwaters in Australian Territory before ticking them?? :)
>John Tongue
>Ulverstone, Tas.
>On 26/10/2010, at 1:12 PM, Nikolas Haass wrote:
>> Hi all,
>> If you want to count introduced species (which in my personal opinion
>> really make sense), shouldn't you at least apply the "three generation
>rule" (=
>> 3
>> proven self-sustaining generations)? For long-lived birds like Ostrich,
>> means approximately 30-48 years of proven self-sustaining population.
>Thus, the
>> NSW Ostriches need another 10-28 years to become "tickable".
>> Cheers,
>> Nikolas
>> ----------------
>> Nikolas Haass
>> Sydney, NSW


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