birding-aus

re: Norfolk Island birdlist

To: "Lawrie Conole" <>
Subject: re: Norfolk Island birdlist
From: "Chris Sanderson" <>
Date: Thu, 7 Feb 2008 09:54:57 +1000
Hi Lawrie,

Is that extinct, or extinct in Australia?

Regards,
Chris

On Feb 7, 2008 9:00 AM, Lawrie Conole <> wrote:

> Regarding the Island Thrush (Turdus poliocephalus) in our region -
> speaking
> both politically and biogeographically, Schodde & Mason (1998) have the
> following:
>
> Norfolk Island - T. poliocephalus poliocephalus - apparently the nominate
> form - regarded as Extinct
> Lord Howe Island - T. poliocephalus vinitinctus (common name Vinous-tinted
> Thrush) - regarded as Extinct
> Christmas Island (Indian Ocean) - T. poliocephalus erythropleurus -
> regarded
> as 'Lower Risk - near threatened'
>
> Given that this bird is splattered near and far across oceanic and
> contintental islands in the Indian and Pacific Oceans, and varies
> spectacularly in appearance throughout, it doesn't seem very likely that
> an
> exact replacement for the bird could be found for re-introduction to Lord
> Howe.  The form in New Caledonia was probably the closest useful source,
> but
> it is probably extinct as well.  Maybe a candidate from the Solomons might
> work - let it settle in and evolve into whatever kind of Island Thrush
> Lord
> Howe can generate.  Many Island Thrush populations look for all the world
> like Eurasian Blackbirds - the end result might be aesthetically
> disappointing, even if ecologically functional.
>
> L.
>
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