Cats again

To: <>, "birding-aus" <>
Subject: Cats again
From: "Reid" <>
Date: Mon, 3 Sep 2001 16:01:06 +1000
> The American site put on birding aus was interesting in that they were
>catching the cats, some where in California I think, de-sexing them then
>releasing at the catch site.  They said the replacement rate from
>breeding was faster than they could catch and eliminate them and that a
>population that did not get replaced would eventually die out.

Hello Chris and others

I know that I am more than usually thick, but I really cannot define the
theory of the 'de-sex and release' method.  To my way of thinking, the
released cat continues to kill wildlife until it dies.  When it does die,
its 'niche' in the environment would surely then be filled by a cat coming
in from an adjacent area.  Maybe in a restricted area like Macquarie Island
you could trap and de-sex all the cats before there was a significant
percentage attrition due to death; that is, there would then be no
replacements.  But I cannot see how it works in an 'open' environment, where
replacements are available.

Does anybody know of any authoritative study/article that supports this
method, please?  And do they de-sex both male and female cats?


Ralph Reid

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