I have noticed that some people refuse to record introduced birds on their
lists which makes tracking such things a little harder!
2008/8/30 Syd Curtis <>
>
> >From "Birds of Lord Howe island" (1991) written and published by Ian
> Hutton;
> at page 113:
>
> "The Blackbird is a fairly recent arrival on Lord Howe island ... They
> are mainly ground feeders - energetically foraging for fruits, berries,
> spiders and insects, even cockroaches.
>
> "Blackbirds were introduced into New Zealand and Australia from Great
> Britain in the 1850s, and were first reported on Lord Howe island by Max
> Nicholls in 1953. Because this species was rare on the New South Wales
> coast at this time, it is assumed to have arrived from new Zealand."
>
> A very "long hop" indeed; but still possibly an aberration?
>
> As distinct from Zosterops (Silver-eyes or White-eyes) which have 'hopped'
> to many (most?) south-western Pacific islands. But they did it over an
> unknown, but very lengthy period - long enough ago for speciation to occur.
>
> Cheers
>
> Syd
>
>
> > From: "Michael Atzeni" <>
> > Date: Thu, 28 Aug 2008 22:09:55 +0800
> > To:
> > Subject: [Birding-Aus] RFI Common Blackbirds: help with distribution gaps
> >
> > From the confirmed records so far in Queensland and northern NSW, it
> > would appear this species is highly dispersive and can bob up
> > hundreds of kilometres from the nearest population in the most
> > unlikely places e.g. St George, Fraser Island.
> >
> > Or is this long-hopping an aberration? Is it more likely that they
> > have slowly but surely bred and expanded there way to these locations
> > over a number of undetected (or unreported) generations? Are the
> > inordinate gaps in distribution simply due to a lack of observers
> > along the routes which they've been using? And what are those routes?
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