Is there a general consensus on this?
There are 2 populations of this bird on the Northern Beaches which I think have
been around for that time, but I can't prove that, and which I would like to
tick, but haven't. But having just ratified my list to be more accurate I don't
want to tick unless it's a valid tick.
Also, how is the decision made that a certain population at a certain location
is now tickable?
And if you know of a population that isn't widely known, how do you get that
population to be accepted as being there for 10 years so it can be ticked?
Regards,
Mark
> Dave Torr <> wrote:
>
> Seems one of the ongoing questions on Birding-Aus is "is xxxx a tickable
> population". There seem to be two easy alternatives - either we count no
> introduced birds or we count them all. That would save a lot of debate I
> guess.... :-)
> Slightly more seriously - I guess it is very hard for anyone to
> determine in
> many cases whether the population has been self-sustaining for the
> required
> period of time (10 years I believe?). How do we know for any of these
> populations whether or not there have been further releases to boost the
> population - I recall that someone reckoned the Melbourne Bayside
> Barbary
> Doves were being replenished by further releases from time to time? Does
> being fed artificially stop them being self-sustaining?
>
>
> 2009/11/27 Bill Stent <>
>
> > I feel somehow that the Melbourne populations aren't tickable, but I'm
> > looking for a good reason why not.
> >
> > I'd be surprised if there were more than a dozen or so, which would
> suggest
> > they might be partially supported by human feeding (although I've got
> no
> > actual evidence for this).
> >
> > Bill
> >
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