I guess the idea is that you gradually neuter the cat population, and while
you're doing that, the cats are maintaining their territories so they aren't
simply replaced by younger cats as they would if they were killed. Then when
you've done them all, they start dying of natural causes.
It's called TNR (trap-neuter-release) and is used in some places to control
feral cat colonies. According to this page, it's only effective if 75-80% of
the population is neutered, and if there's "virtually no imigration into the
colony":
http://feral.typepad.com/feral_thoughts/2008/09/trap-neuter-and.html
Peter Shute
> -----Original Message-----
> From: Birding-Aus
> On Behalf Of
> Chris Melrose
> Sent: Tuesday, 17 March 2015 10:40 AM
> To: Sonja Ross
> Cc: Aus
> Subject: Re: [Birding-Aus] A different way for feral cats?????
>
> Dear all
> Neutering cats will certainly help with the spread of cats
> but they will remain a killing machine, despite being unable
> to reproduce.
> Cheers
> Chris
>
>
>
>
> Christine Melrose
>
>
>
>
> > On 17 Mar 2015, at 10:09, Sonja Ross <> wrote:
> >
> > I have the ABC as my home page and just had a quick look to
> see if anything was happening in the world and there is an
> item on the kangaroo problem in Canberra where they are
> proposing to deliver contraceptives via darts. Would that be
> something that could be used for feral cats?
> >
> > The link is:
> >
> http://www.abc.net.au/news/2015-03-17/contraceptive-darts-could-end-ro
> > o-culling-controversy/6324286
> >
> > Sonja
> >
> >
> >
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