Tammars are actually native to KI. It is the Koalas there that are causing
a problem - and judging by the success of most previous biological control
programs I'd be very sceptical that a powerful owl would survive in what is
mainly mallee or, if they did, decide to eat Koala. They'd probably begin
by picking off the last 20 or so KI dunnarts before turning their attention
to the Glossy Blacks!
Feral Future by Tim Low deals with all this sort of stuff fantastically
Jon
-----Original Message-----
From: Laurie & Leanne Knight <>
To: birding aus <>
Date: 29 January 2002 21:39
Subject: Balancing Kangaroo Island
>Sunday night's episode of Island Life featured Kangaroo Island and
>provided a fascinating overview of the impact of "native" animal
>introductions - earlier last century, naturalists introduced koalas,
>platapuses, tamar wallabies etc. In the absence of predators, the
>koalas and wallabies have bred like rabbits and put serious pressure on
>their habitat. Increased populations of galahs, corellas and possums
>are also putting pressure on the glossy cockatoos.
>
>The question is, bearing in mind the dangers of introducing species,
>what would be the impact of establishing a population of powerful owls
>on the island to contol the nocturnal marsupials?
>
>Regards, Laurie.
>
>.
>Birding-Aus is on the Web at
>www.shc.melb.catholic.edu.au/home/birding/index.html
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>"unsubscribe birding-aus" (no quotes, no Subject line)
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>
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