NSW Ostriches

To: Dave Torr <>
Subject: NSW Ostriches
From: Nikolas Haass <>
Date: Mon, 25 Oct 2010 20:54:28 -0700 (PDT)
Thanks for your comment, Dave!

True, it IS important to RECORD introduced species. I was just making  fun of 
TICKING them, which in my opinion is a big difference. And yes,  it is 
to record them early enough (e.g. Canada Geese at NSW's  south coast a couple 
years ago) to be able to cope with a possibly  resulting impact on the 
environment. But still, the sightings of some  Ostriches with chicks (since the 
1990s) doesn't mean that they represent  a self-sustaining population.



Nikolas Haass

Sydney, NSW

From: Dave Torr <>
To: Nikolas Haass <>
Cc: jenny spry <>; birding-aus 
Sent: Tue, October 26, 2010 2:21:32 PM
Subject: NSW Ostriches

Whether one counts them or not is a matter of personal preference -  however it 
is important that people record such things (if they are  going to record 
sightings at all) else it becomes hard in later years to  track the spread of 
such species. There seems to be a tendency in some  places to only record 
"natives" and ignore everything else.

On 26 October 2010 14:12, Nikolas Haass <> wrote:
Hi all,

If you want to count introduced species (which in my personal opinion doesn't
really make sense), shouldn't you at least apply the "three generation rule" (=

proven self-sustaining generations)? For long-lived birds like Ostrich, this
means approximately 30-48 years of proven self-sustaining population. Thus, the
NSW Ostriches need another 10-28 years to become "tickable".


Nikolas Haass

Sydney, NSW


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