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.
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:
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".
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